I am trying to add rows of tables. I can't add serial number of new added rows.
i.e. I have to show serial number automatic increment while row is added.
<SCRIPT language="javascript">
function addRow(dataTable) {
var table = document.getElementById('dataTable');
var rowCount = table.rows.length;
var row = table.insertRow(2);
var colCount = table.rows[3].cells.length;
for(var i=0; i<colCount; i++) {
var newcell = row.insertCell(i);
newcell.innerHTML = table.rows[3].cells[i].innerHTML;
}
</SCRIPT>
Any idea? plz help
addCells(table, rows, cells);
table: A string that represents the id of the targeted table.
Ex. addCells('dataTable',...)
rows: An integer of the quantity of rows to be appended to target tabel.
Ex. addCells('dataTable', 4, ...)
cells: An integer of how many cells per row.
Ex. addCells('dataTable', 4, 5)
Each row and cell is assigned a unique id, this is the pattern:
Row: table id+R+row position
Ex. #dataTableR3 = 4th row of #dataTable
Cell: table id+R+row position+C+cell position
Ex. #dataTableR3C7 = 8th cell of 4th row of #dataTable
Note the offset in the numbers. This is due to the fact that the id system is 0-count (starts with 0 as the first number.) Check the dev tools - console to see all of the generated ids.
Here's the jQuery version, from this similar question. I don't consider it a duplicate since your question is more specific about an aspect of that previously mentioned question.
var btn1 = document.getElementById('btn1');
btn1.addEventListener('click', function(e) {
var inp0 = document.getElementById('inp0').value;
var inp1 = document.getElementById('inp1').value;
var inp2 = document.getElementById('inp2').value;
addCells(inp0, inp1, inp2);
}, false);
function addCells(table, rows, cells) {
var T = document.getElementById(table);
var R = parseInt(rows);
var C = parseInt(cells);
for (var i = 0; i < R; i++) {
var row = document.createElement('tr');
T.appendChild(row);
row.setAttribute('id', table + 'R' + i);
console.log('Appended row: ' + table + 'R' + i);
for (var j = 0; j < C; j++) {
var cell = document.createElement('td');
row.appendChild(cell)
cell.setAttribute('id', table + 'R' + i + 'C' + j);
console.log('Appended cell: ' + table + 'R' + i + 'C' + j);
}
}
}
fieldset {
margin: 20px;
}
table {
border: 3px double blue;
table-layout: fixed;
}
td {
border: 1px solid red;
width: 20px;
height: 20px
}
<fieldset>
<legend>Enter Table ID, Number of Rows, & Number of Cells per Row</legend>
<label for="inp0">Table</label>
<input id="inp0" />
<br/>
<label for="inp1">Rows</label>
<input id="inp1" />
<br/>
<label for="inp2">Cells</label>
<input id="inp2" />
<br/>
<button id="btn1">Enter</button>
</fieldset>
<table id="t">
<tr>
<td>Table</td>
<td>ID</td>
<td>is</td>
<td>t</td>
<td> </td>
</tr>
</table>
<table id="u">
<caption>Table ID: u</caption>
</table>
Related
I am obviously very new to JS. I need to solve a problem where i can't change the HTML and CSS-file. From the HTML-file I am supposed to:
add a column with the header "Sum". (Already did that)
add a row att the bottom with the div id "sumrow". (Did that as well)
add a button at the end. (Did that)
add the total from columns "Price and Amount" into column "Sum" when button is clicked
(This where I am lost)
And like I said I can't change anything in HTML and CSS-files.
// Create a newelement and store it in a variable
var newEl = document.createElement('th');
//Create a text node and store it in a variable
var newText = document.createTextNode('Summa');
//Attach the newtext node to the newelement
newEl.appendChild(newText);
//Find the position where the new element should be added
var position = document.getElementsByTagName('tr')[0];
//Insert the newelement into its position
position.appendChild(newEl);
// Find a <table> element with id="myTable":
var table = document.getElementById("pricetable");
// Create an empty <tr> element and add it to the 1st position of the table:
var row = table.insertRow(-1);
// Insert new cells (<td> elements) at the 1st and 2nd position of the "new" <tr> element:
var cell1 = row.insertCell(0);
var cell2 = row.insertCell(1);
var cell3 = row.insertCell(2);
var cell4 = row.insertCell(3);
var cell5 = row.insertCell(4);
var cell6 = row.insertCell(5);
// Add some text to the new cells:
cell1.innerHTML = "";
cell2.innerHTML = "";
cell3.innerHTML = "";
cell4.innerHTML = sumVal;
cell5.innerHTML = "";
cell6.innerHTML = "";
//Puts divid sumrow
row.setAttribute("id", "sumrow");
var table = document.getElementById("pricetable"), sumVal = 0;
for(var i = 1; i < table.rows.length; i++)
{
sumVal = sumVal + parseInt(table.rows[i].cells[3].innerHTML);
}
//Creates button
var button = document.createElement("button");
button.innerHTML = "Beräkna pris";
// 2. Append somewhere
var body = document.getElementsByTagName("tbody")[0];
body.appendChild(button);
button.addEventListener("click", medelVarde, true);
button.addEventListener("click", raknaUtMedelvarde, true);
button.setAttribute("class", "btn-primary");
function medelVarde(celler){
var summa = 0;
for(var i = 3; i < celler.length -1; i++){ //Räknar igenom från cell nr 4
var nuvarandeVarde = celler[i].firstChild.nodeValue;
summa = summa + parseInt(nuvarandeVarde);
}
var medel = summa / 1;
return medel;
}
function raknaUtMedelvarde(){
var tabell = document.getElementById("pricetable");
var rader = tabell.getElementsByTagName("tr");
for(var i = 1; i < rader.length; i++){
var tabellceller = rader[i].getElementsByTagName("td"); //Pekar på de td-element som vi har hämtat
var medel = medelVarde(tabellceller);
var medeltext = document.createTextNode(medel);
var medelelement = tabellceller[tabellceller.length - 1];
var row2 = table.insertRow(-1);
medelelement.appendChild(medeltext.cloneNode(true));
.table {
background: white;
}
tr#sumrow {
background-color: #cce4ff;
}
tr#sumrow td:first-child::after{
content: "\a0";
}
<!DOCTYPE html>
<html lang="sv">
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
<title>Handling calculations and tables</title>
<link rel="stylesheet" type="text/css" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/css/bootstrap.min.css" />
<link rel="stylesheet" type="text/css" href="style/style.css" />
</head>
<body>
<div class="container">
<div id="header" class="text-center px-3 py-3 pt-md-5 pb-md-4 mx-auto">
<h1 class="display-4">Home Electronics</h1>
<p class="lead">Excellent prices on our hone electronics</p>
</div>
<div id="content">
<table id="pricetable" class="table table-hover">
<thead class="thead-dark">
<tr>
<th>Articlenr</th>
<th>Producttype</th>
<th>Brand</th>
<th>Price</th>
<th>Amount</th>
</tr>
</thead>
<tbody>
<tr>
<td>23456789</td>
<td>Telephone</td>
<td>Apple</td>
<td>6500</td>
<td>
<input type="text" size="3" value="1" />
</td>
</tr>
<tr>
<td>22256289</td>
<td>Telephone</td>
<td>Samsung</td>
<td>6200</td>
<td>
<input type="text" size="3" value="1" />
</td>
</tr>
<tr>
<td>24444343</td>
<td>Telephone</td>
<td>Huawei</td>
<td>4200</td>
<td>
<input type="text" size="3" value="1" />
</td>
</tr>
<tr>
<td>19856639</td>
<td>Tablet</td>
<td>Apple</td>
<td>4000</td>
<td>
<input type="text" size="3" value="1" />
</td>
</tr>
<tr>
<td>39856639</td>
<td>Tablet</td>
<td>Samsung</td>
<td>2800</td>
<td>
<input type="text" size="3" value="1" />
</td>
</tr>
<tr>
<td>12349862</td>
<td>Tablet</td>
<td>Huawei</td>
<td>3500</td>
<td>
<input type="text" size="3" value="1" />
</td>
</tr>
</tbody>
</table>
</div>
</div>
<!-- add this script as snippet in this question -->
<!-- <script src="scripts/calculate.js"></script> -->
</body>
</html>
Or code is available on https://jsfiddle.net/cmyr2fp6/
button.addEventListener("click", medelVarde, true);
button.addEventListener("click", raknaUtMedelvarde, true);
For the button click event listener, you don't have to add the medelVarde function.
Also, speaking of that function, I'm not really sure what's happening there. Are you trying to multiply the price and the amount? If so, you can just get the price cell's text and multiply it by the amount input's value (converting to Number the values before multiplying).
const [,,, priceCell, amountCell, sumCell] = row.querySelectorAll('td');
const price = Number(priceCell.innerText);
const amount = Number(amountCell.querySelector('input').value);
const sum = price * amount;
The [,,, priceCell, amountCell, sumCell] is just a short-hand for getting the cells you want from the row (destructuring assignment. querySelectorAll returns a NodeList wherein you can get the element by index.
function setUp() {
// Set up table.
const table = document.getElementById('pricetable');
const headerRow = table.querySelector('thead tr');
const sumHeader = headerRow.insertCell();
const tbody = table.querySelector('tbody');
const sumTotalRow = tbody.insertRow();
const sumTotalCell = sumTotalRow.insertCell();
sumHeader.innerText = 'Summa';
sumTotalCell.colSpan = '5';
sumTotalCell.innerText = 'Total';
tbody.querySelectorAll('tr').forEach(row => row.insertCell());
// Set up button.
const btn = document.createElement('button');
btn.innerText = 'Beräkna pris';
btn.addEventListener('click', () => {
let total = 0;
tbody.querySelectorAll('tr').forEach((row, i, arr) => {
if (i < arr.length - 1) {
const [,,, priceCell, amountCell, sumCell] = row.querySelectorAll('td');
const price = Number(priceCell.innerText);
const amount = Number(amountCell.querySelector('input').value);
const sum = price * amount;
sumCell.innerText = sum;
total += sum;
} else {
const totalCell = row.querySelector('td:last-child');
totalCell.innerText = total;
}
});
});
document.body.appendChild(btn);
}
setUp();
Hey ZioPaperone welcome to the JS World :-)
First of all I would recommend to wrap you logic into functions, eg
appendRow() {
//put append row logic here
}
Now let's move on to your question, appending a column is a bit more of a trick then appending a row. You might noticed already that the DOM-Structure is a bit more complex. So for a row you could you correctly has added a node to your tbody.
For a column we need to learn how to create a cell and how we add an entry to the thead. We will use the insertCell() method to insert cells, for thead cells that won't work, so we need to add the th with createElement() and append it with appendChild()
function appendColumn() {
// insertCell doesn't work for <th>-Nodes :-(
var tableHeadRef = document.getElementById('pricetable').tHead; // table reference
var newTh = document.createElement('th');
tableHeadRef.rows[0].appendChild(newTh); // inser new th in node in the first row of thead
newTh.innerHTML = 'thead title';
// open loop for each row in tbody and append cell at the end
var tableBodyRef = document.getElementById('pricetable').tBodies[0];
for (var i = 0; i < tableBodyRef.rows.length; i++) {
var newCell = tableBodyRef.rows[i].insertCell(-1);
newCell.innerHTML = 'cell text'
}
}
EDIT:
To sum up values in col u can use the same approach. I broke down the nodes for better understanding. You also might want to add a check if your table data contains a number with isNaN().
function sumColumn(tableId, columnIndex) {
var tableBodyRef = document.getElementById(tableId).tBodies[0];
var sum = 0; // Initialize sum counter with 0
for (var i = 0; i < tableBodyRef.rows.length; i++) {
var currentRow = tableBodyRef.rows[i]; //access current row
var currentCell = currentRow.cells[columnIndex]; // look for the right column
var currentData = currentCell.innerHTML; // grab cells content
var sum += parseFloat(currentData); // parse content and add to sum
}
return sum;
}
Each time I input another football score, the league table is updated and displayed but it's appended to a list of tables. How do I display only the latest table?
Here is an extract of the html:
<div>
<table id="matches" border="1"> </table>
</div>
<div>
<table id="standings" border="1"> </table>
</div>
<input type="button" value="Update" onclick="update()" />
Here is the javascript that displays the fixtures for inputting scores:
// Display fixtures to input the scores
window.onload = function()
{
table = document.getElementById("matches");
var row;
var cell1;
var cell2;
var cell3;
for (i = 1; i < Results.length; i++)
{
row = table.insertRow(i-1); //table starts row 0 but Results row 1 so i-1 used
cell1 = row.insertCell(0);
cell2 = row.insertCell(1);
cell3 = row.insertCell(2);
cell4 = row.insertCell(3);
cell1.innerHTML = Results[i][0];
cell2.innerHTML = '<input type="number" min="0" max="99"/>'
cell3.innerHTML = '<input type="number" min="0" max="99"/>'
cell4.innerHTML = Results[i][3];
}
}
And here is the code that displays the table after the lastest scores have been inputed:
// Display League Table
standings = document.getElementById("standings");
for (i = 0; i < League.length; i++)
{
row = standings.insertRow(i);
cell1 = row.insertCell(0);
cell2 = row.insertCell(1);
cell3 = row.insertCell(2);
cell4 = row.insertCell(3);
cell5 = row.insertCell(4);
cell6 = row.insertCell(5);
cell7 = row.insertCell(6);
cell8 = row.insertCell(7);
cell1.innerHTML = League[i][0];
cell2.innerHTML = League[i][1];
cell3.innerHTML = League[i][2];
cell4.innerHTML = League[i][3];
cell5.innerHTML = League[i][4];
cell6.innerHTML = League[i][5];
cell7.innerHTML = League[i][6];
cell8.innerHTML = League[i][7];
}
After entering three scores this is what is displayed:
I've tried clearing the league array within javascript but still the same outcome. How do I only display top version of the table? Thanks
Thanks again to comments, and some further googling, the following deletes the table ahead of updating it, unless there's a better way?
for(var i = standings.rows.length - 1; i >= 0; i--)
{
standings.deleteRow(i);
}
Cheers everyone! :)
For your table update/question, focus on the updateRow function. This line does the actual update of contents of row rownum column(<td>) i
rows[rownum].getElementsByTagName('td')[i].innerHTML = coldata[i];
There is more here than just updating the table rows, for that you can review the function updateRow in my name-spaced object. updateRow calls createRow if it needs to (the row at that index does not exist), nothing fancy here, then updates the new row.
I use the array of match objects in matches I created (was not one in the question so I made assumptions) also in the namespace:
matches: [{
match: 1,
score: [{
team: "Ap",
score: 3
}, {
team: "Or",
score: 2
}]
}],
Note where I call this code to update the table for standings in the table with standings-table id. I have no idea what those are so I simply inserted some stuff in the array then update the table using
for (let i = 0; i < myLeague.standings.length; i++) {
myLeague.updateRow('standings-table', myLeague.standings[i], i);
}
Other things: I created the form simply to show how to update the table when a new match is inserted, I trigger an event and it does what it needs to update or insert a row - but really that is just to test the update as new matches are created.
Row in a table are either updated or inserted depending totally on the array of matches content
nothing handles deletions from the table or array since this was just about insert and update
if a row index for a match index does not exist, it creates a new row and updates it
var myLeague = myLeague || {
teamSelect1: "team1",
teamSelect2: "team2",
matchesPlayed: 1,
teams: [{
name: "Apples",
abbreviation: "Ap"
},
{
name: "Oranges",
abbreviation: "Or"
},
{
name: "Pears",
abbreviation: "Pe"
}
],
matches: [{
match: 1,
score: [{
team: "Ap",
score: 3
}, {
team: "Or",
score: 2
}]
}],
standings: [
["A", 2, 1, 1, 3, 2, 3, 0],
["B", 3, 1, 1, 3, 2, 3, 6]
],
cloneRow: function(tableid, objectRef) {
// find table to clone/append to
let table = document.getElementById(tableid);
// find row to clone, I use first one
let firstRow = mytable.rows[0];
// let row = document.getElementById("rowToClone");
let clone = firstRow.cloneNode(true); // copy children too
clone.id = ""; // change id or other attributes/contents
table.appendChild(clone); // add new row to end of table
},
createRow: function(tableid, colCount, rowCount = 1, defaultContent = "") {
let row = document.createElement('tr'); // create row node
for (let i = 0; i < colCount; i++) {
let newText = document.createTextNode(defaultContent);
let col = row.insertCell(i);
col.appendChild(newText);
}
let table = document.getElementById(tableid); // find table to append to
let tbody = table.getElementsByTagName('tbody')[0];
for (let r = 1; r <= rowCount; r++) {
tbody.appendChild(row); // append row to table
}
},
updateRow: function(tableid, coldata = ['$nbsp;'], rownum = 0) {
let table = document.getElementById(tableid); // find table to update to
let tbody = table.getElementsByTagName('tbody')[0];
let rows = tbody.rows; // get rows node
let maxRows = 20; //keep it from going crazy adding rows
while (rows.length < maxRows && !rows[rownum]) {
this.createRow(tableid, coldata.length, 1, "x");
}
//myLeague.updateRow(tableid,coldata, rownum);
for (let i = 0; i < coldata.length; i++) {
rows[rownum].getElementsByTagName('td')[i].innerHTML = coldata[i];
}
},
addTeam: function(team, teamid) {
var sel = document.getElementById(teamid);
var optNew = document.createElement("option");
optNew.value = team.abbreviation;
optNew.text = team.name;
sel.add(optNew, null);
},
addTeamsToSelect: function() {
myLeague.teams.forEach(function(team) {
myLeague.addTeam(team, this.teamSelect1);
myLeague.addTeam(team, this.teamSelect2);
}, this);
},
listMatches: function(event) {
// event.target is the div
let src = event.target.dataset.source;
console.log("src:", src);
document.getElementById("matchplayed").textContent = event.matches;
this[src].forEach(function(item, index, array) {
document.getElementById('matchplayed').textContent = array.length;
let rowdata = [item.score[0].team, item.score[0].score, item.score[1].team, item.score[1].score];
this.updateRow(src, rowdata, index);
}, this);
},
clickAddListener: function(event) {
// 'this' is bound to the namespace object
// console.log(event.target); // the button
// console.log(this.matchesPlayed);//namespace
if (!document.getElementById(this.teamSelect1).value || !document.getElementById(this.teamSelect2).value) {
let errorEl = document.getElementById("form1")
.getElementsByClassName("error-text")[0];
errorEl.textContent = "Both teams need to be selected.";
errorEl.style.visibility = 'visible';
errorEl.style.opacity = '1';
setTimeout(function() {
errorEl.style.WebkitTransition = 'visibility .5s, opacity .5s';
errorEl.style.opacity = '0';
errorEl.style.visibility = 'hidden';
errorEl.textContent = "";
}, 5000);
} else {
this.matchesPlayed++;
let r = {
match: this.matchesPlayed,
score: [{
team: document.getElementById(this.teamSelect1).value,
score: document.getElementById("score1").value
}, {
team: document.getElementById(this.teamSelect2).value,
score: document.getElementById("score2").value
}]
};
this.matches.push(r);
}
document.getElementById('matches').dispatchEvent(this.showmatchesevent);
},
addListeners: function() {
let scope = this;
document.getElementById(this.teamSelect1)
.addEventListener('change', function() {
let s = document.getElementById(scope.teamSelect2);
let oval = s.value;
if (this.value == oval) {
s.value = '';
}
}, this);
document.getElementById(this.teamSelect2)
.addEventListener('change', function() {
let s = document.getElementById(scope.teamSelect1);
let oval = s.value;
if (this.value == oval) {
s.value = '';
}
}, this);
document.getElementById('add-match')
// bind this namespace to the event listener function
.addEventListener('click', (this.clickAddListener).bind(this), false);
this.showmatchesevent = new CustomEvent('showmatches');
document.getElementById('matches')
.addEventListener('showmatches', this.listMatches.bind(this), false);
}
};
window.onload = function() {
myLeague.addTeamsToSelect();
myLeague.addListeners();
for (let i = 0; i < myLeague.standings.length; i++) {
myLeague.updateRow('standings-table', myLeague.standings[i], i);
}
// set table from defaults/imported list
document.getElementById('matches').dispatchEvent(myLeague.showmatchesevent);
};
/* typography */
html {
font-family: 'helvetica neue', helvetica, arial, sans-serif;
}
th {
letter-spacing: 2px;
}
td {
letter-spacing: 1px;
}
tbody td {
text-align: center;
}
.match-inputs {
border: solid 2px #DDDDDD;
padding;
1em;
margin: 1em;
}
.error-text {
height: 1em;
color: red;
}
.matches-played {
padding: 13m;
}
/* table layout */
table {
border-collapse: collapse;
border: 1px solid black;
}
.score th,
td {
padding: 0.2em;
border: solid #DDDDDD 1px;
}
.container {
padding: 1em;
}
<div class="container match-inputs">
<form id="form1">
<div>Add Matches</div>
<div class="input-group"><label>Choose L Team:</label>
<select id="team1">
<option value="">Choose</option>
</select>
</div>
<div class="input-group"><label>Choose L2 Team:</label>
<select id="team2">
<option value="">Choose</option>
</select>
</div>
<div class="input-group score-group"><label>Team1 score:</label>
<input id="score1" type="number" class="score-input" value="0" min="0" max="99" value="0" />
</div>
<div class="input-group score-group"><label>Team2 score:</label>
<input id="score2" type="number" class="score-input" value="0" min="0" max="99" value="0" />
</div>
<div class="input-group"><label>Add this match to the list.</label>
<button type="button" id="add-match">Add Match</button>
</div>
<div class="error-text"> </div>
</form>
</div>
<div class="container">
<div class="matches-played">Matches Played:<span id="matchplayed"></span></div>
<table id="matches" data-source="matches">
<thead>
<tr>
<th colspan="4">Matches</th>
</tr>
<tr>
<th>L</th>
<th>S</th>
<th>S2</th>
<th>L1</th>
</tr>
</thead>
<tbody>
<tr>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
</tbody>
</table>
</div>
<div class="container">
<table id="standings-table">
<thead>
<tr>
<th colspan="8">Standings</th>
</tr>
<tr>
<th>Team</th>
<th>P</th>
<th>W</th>
<th>D</th>
<th>L</th>
<th>F</th>
<th>A</th>
<th>Pts</th>
</tr>
</thead>
<tbody>
<tr>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
</tbody>
</table>
</div>
I have been trying to solve this for days.I would greatly appreciate any help you can give me in solving this problem. I have a table like the following:
ID Name Study
1111 Angela XRAY
2222 Bena Ultrasound
3333 Luis CT Scan
1111 Angela Ultrasound
3333 Luis XRAY
3333 Luis LASER
and I want to group them like:
ID Name Study
GROUP BY id(1111) 2 hits "+"
2222 Bena Ultrasound
GROUP BY id(3333) 3 hits "+"
AND if "+" is clicked then it will expand:
ID Name Study
GROUP BY id(1111) 2 hits "-"
1111 Angela XRAY
1111 Angela Ultrasound
2222 Bena Ultrasound
GROUP BY id(3333) 3 hits "-"
3333 Luis CT Scan
3333 Luis Ultrasound
3333 Luis LASER
There is a demo that I found on stackoverflow(http://jsfiddle.net/FNvsQ/1/) but the only problem I have is I want to include all rows having the same id under a dynamic header like
grouped by id(1111) then the expand/collapse icon (+/-)
var table = $('table')[0];
var rowGroups = {};
//loop through the rows excluding the first row (the header row)
while(table.rows.length > 0){
var row = table.rows[0];
var id = $(row.cells[0]).text();
if(!rowGroups[id]) rowGroups[id] = [];
if(rowGroups[id].length > 0){
row.className = 'subrow';
$(row).slideUp();
}
rowGroups[id].push(row);
table.deleteRow(0);
}
//loop through the row groups to build the new table content
for(var id in rowGroups){
var group = rowGroups[id];
for(var j = 0; j < group.length; j++){
var row = group[j];
if(group.length > 1 && j == 0) {
//add + button
var lastCell = row.cells[row.cells.length - 1];
$("<span class='collapsed'>").appendTo(lastCell).click(plusClick);
}
table.tBodies[0].appendChild(row);
}
}
//function handling button click
function plusClick(e){
var collapsed = $(this).hasClass('collapsed');
var fontSize = collapsed ? 14 : 0;
$(this).closest('tr').nextUntil(':not(.subrow)').slideToggle(400)
.css('font-size', fontSize);
$(this).toggleClass('collapsed');
}
Here is the answer to my own question.
First id's are added to the table and the rows and there's a small change to the JS:
var table = $('table')[0];
var rowGroups = {};
//loop through the rows excluding the first row (the header row)
while (table.rows.length > 1) {
var row = table.rows[1];
var id = $(row.cells[0]).text();
if (!rowGroups[id]) rowGroups[id] = [];
if (rowGroups[id].length > 0) {
row.className = 'subrow';
$(row).slideUp();
}
rowGroups[id].push(row);
table.deleteRow(1);
}
//loop through the row groups to build the new table content
for (var id in rowGroups) {
var group = rowGroups[id];
for (var j = 0; j < group.length; j++) {
var row = group[j];
var notSubrow = false;
if (group.length > 1 && j == 0) {
//add + button
var lastCell = row.cells[row.cells.length - 1];
var rowId = row.id;
var tableId = table.id;
notSubrow = true;
//$("<span class='collapsed'>").appendTo(lastCell).click(plusClick);
}
table.tBodies[0].appendChild(row);
if (notSubrow) {
$('#' + tableId).find('#' + rowId).attr('class', 'subrow');
$('#' + tableId).find('#' + rowId).before("<tr class='subrowHeader' style='background:#E6E6FA;border-bottom:1px solid #708AA0 !important'><td colspan='3'> group by " + $(row.cells[0]).text() + " (" + group.length + ")" + "<span class='collapsed' onclick='plusClick(this)' style='float:left;display:inline'></td></tr>");
$('#' + tableId).find('#' + rowId).hide();
}
}
}
//function handling button click
function plusClick(e) {
var collapsed = $(e).hasClass('collapsed');
var fontSize = collapsed ? 14 : 0;
$(e).closest('tr').nextUntil(':not(.subrow)').slideToggle('fast').css('font-size', fontSize);
$(e).toggleClass('collapsed');
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table id="table1">
<tr id="tr1">
<th>Parent ID</th>
<th>Parent Name</th>
<th>Study</th>
</tr>
<tr id="tr2">
<td>1111</td>
<td>Angela</td>
<td>XRAY</td>
</tr>
<tr id="tr3">
<td>2222</td>
<td>Bena</td>
<td>Untrasound</td>
</tr>
<tr id="tr4">
<td>3333</td>
<td>Luis</td>
<td>CT Scan</td>
</tr>
<tr id="tr5">
<td>1111</td>
<td>Angela</td>
<td>Untrasound</td>
</tr>
<tr id="tr6">
<td>3333</td>
<td>Luis</td>
<td>LCD</td>
</tr>
<tr id="tr7">
<td>3333</td>
<td>Luis</td>
<td>LASER</td>
</tr>
</table>
*Inorder to test copy and paste the code into http://jsfiddle.net/FNvsQ/1/ &
In the Frameworks & Extensions panel, set onLoad to No wrap - in body.
As a comparison, here's a POJS function that is functionally equivalent in the same amount of code. Doesn't use a large external library though.
It uses the same algorithm of collecting all rows with the same value in the first cell, then modifies the table to insert header rows and group the data rows.
// Group table rows by first cell value. Assume first row is header row
function groupByFirst(table) {
// Add expand/collapse button
function addButton(cell) {
var button = cell.appendChild(document.createElement('button'));
button.className = 'toggleButton';
button.textContent = '+';
button.addEventListener('click', toggleHidden, false);
return button;
}
// Expand/collapse all rows below this one until next header reached
function toggleHidden(evt) {
var row = this.parentNode.parentNode.nextSibling;
while (row && !row.classList.contains('groupHeader')) {
row.classList.toggle('hiddenRow');
row = row.nextSibling;
}
}
// Use tBody to avoid Safari bug (appends rows to table outside tbody)
var tbody = table.tBodies[0];
// Get rows as an array, exclude first row
var rows = Array.from(tbody.rows).slice(1);
// Group rows in object using first cell value
var groups = rows.reduce(function(groups, row) {
var val = row.cells[0].textContent;
if (!groups[val]) groups[val] = [];
groups[val].push(row);
return groups;
}, Object.create(null));
// Put rows in table with extra header row for each group
Object.keys(groups).forEach(function(value, i) {
// Add header row
var row = tbody.insertRow();
row.className = 'groupHeader';
var cell = row.appendChild(document.createElement('td'));
cell.colSpan = groups[value][0].cells.length;
cell.appendChild(
document.createTextNode(
'Grouped by ' + table.rows[0].cells[0].textContent +
' (' + value + ') ' + groups[value].length + ' hits'
)
);
var button = addButton(cell);
// Put the group's rows in tbody after header
groups[value].forEach(function(row){tbody.appendChild(row)});
// Call listener to collapse group
button.click();
});
}
window.onload = function(){
groupByFirst(document.getElementById('table1'));
}
table {
border-collapse: collapse;
border-left: 1px solid #bbbbbb;
border-top: 1px solid #bbbbbb;
}
th, td {
border-right: 1px solid #bbbbbb;
border-bottom: 1px solid #bbbbbb;
}
.toggleButton {
float: right;
}
.hiddenRow {
display: none;
}
<table id="table1">
<tr id="tr1">
<th>Parent ID</th>
<th>Parent Name</th>
<th>Study</th>
</tr>
<tr id="tr2">
<td>1111</td>
<td>Angela</td>
<td>XRAY</td>
</tr>
<tr id="tr3">
<td>2222</td>
<td>Bena</td>
<td>Ultrasound</td>
</tr>
<tr id="tr4">
<td>3333</td>
<td>Luis</td>
<td>CT Scan</td>
</tr>
<tr id="tr5">
<td>1111</td>
<td>Angela</td>
<td>Ultrasound</td>
</tr>
<tr id="tr6">
<td>3333</td>
<td>Luis</td>
<td>LCD</td>
</tr>
<tr id="tr7">
<td>3333</td>
<td>Luis</td>
<td>LASER</td>
</tr>
</table>
I am trying to insert multiple rows and columns to create a table in html dynamically by selecting the number of rows and columns in dropdown list using javascript code like in MS Word.
For example if I select number of rows as 5 and number of columns as 5 from the dropdown list of numbers. 5 rows and 5 columns should get displayed.
My question is how can I add multiple rows and columns dynamically to create a table by selecting the number of rows and columns from the drop down list.
Since, <table> element is the one of the most complex structures in HTML, HTML DOM provide new interface HTMLTableElement with special properties and methods for manipulating the layout and presentation of tables in an HTML document.
So, if you want to accomplish expected result using DOM standards you can use something like this:
Demo old
Demo new
HTML:
<ul>
<li>
<label for="column">Add a Column</label>
<input type="number" id="column" />
</li>
<li>
<label for="row">Add a Row</label>
<input type="number" id="row" />
</li>
<li>
<input type="button" value="Generate" id="btnGen" />
<input type="button" value="Copy to Clipboard" id="copy" />
</li>
</ul>
<div id="wrap"></div>
JS new:
JavaScript was improved.
(function (window, document, undefined) {
"use strict";
var wrap = document.getElementById("wrap"),
setColumn = document.getElementById("column"),
setRow = document.getElementById("row"),
btnGen = document.getElementById("btnGen"),
btnCopy = document.getElementById("btnCopy");
btnGen.addEventListener("click", generateTable);
btnCopy.addEventListener("click", copyTo);
function generateTable(e) {
var newTable = document.createElement("table"),
tBody = newTable.createTBody(),
nOfColumns = parseInt(setColumn.value, 10),
nOfRows = parseInt(setRow.value, 10),
row = generateRow(nOfColumns);
newTable.createCaption().appendChild(document.createTextNode("Generated Table"));
for (var i = 0; i < nOfRows; i++) {
tBody.appendChild(row.cloneNode(true));
}
(wrap.hasChildNodes() ? wrap.replaceChild : wrap.appendChild).call(wrap, newTable, wrap.children[0]);
}
function generateRow(n) {
var row = document.createElement("tr"),
text = document.createTextNode("cell");
for (var i = 0; i < n; i++) {
row.insertCell().appendChild(text.cloneNode(true));
}
return row.cloneNode(true);
}
function copyTo(e) {
prompt("Copy to clipboard: Ctrl+C, Enter", wrap.innerHTML);
}
}(window, window.document));
JS old:
(function () {
"use strict";
var wrap = document.getElementById("wrap"),
setColumn = document.getElementById("column"),
setRow = document.getElementById("row"),
btnGen = document.getElementById("btnGen"),
copy = document.getElementById("copy"),
nOfColumns = -1,
nOfRows = -1;
btnGen.addEventListener("click", generateTable);
copy.addEventListener("click", copyTo);
function generateTable(e) {
var newTable = document.createElement("table"),
caption = newTable.createCaption(),
//tHead = newTable.createTHead(),
//tFoot = newTable.createTFoot(),
tBody = newTable.createTBody();
nOfColumns = parseInt(setColumn.value, 10);
nOfRows = parseInt(setRow.value, 10);
caption.appendChild(document.createTextNode("Generated Table"));
// appendRows(tHead, 1);
// appendRows(tFoot, 1);
appendRows(tBody);
(wrap.hasChildNodes() ? wrap.replaceChild : wrap.appendChild).call(wrap, newTable, wrap.firstElementChild);
}
function appendColumns(tElement, count) {
var cell = null,
indexOfRow = [].indexOf.call(tElement.parentNode.rows, tElement) + 1,
indexOfColumn = -1;
count = count || nOfColumns;
for (var i = 0; i < count; i++) {
cell = tElement.insertCell(i);
indexOfColumn = [].indexOf.call(tElement.cells, cell) + 1;
cell.appendChild(document.createTextNode("Cell " + indexOfColumn + "," + indexOfRow));
}
}
function appendRows(tElement, count) {
var row = null;
count = count || nOfRows;
for (var i = 0; i < count; i++) {
row = tElement.insertRow(i);
appendColumns(row);
}
}
function copyTo(e) {
prompt("Copy to clipboard: Ctrl+C, Enter", wrap.innerHTML);
}
}());
If you want to copy generated result to clipboard you can look at answer of Jarek Milewski - How to copy to the clipboard in JavaScript?
You can use this function to generate dynamic table with no of rows and cols you want:
function createTable() {
var a, b, tableEle, rowEle, colEle;
var myTableDiv = document.getElementById("DynamicTable");
a = document.getElementById('txtRows').value; //No of rows you want
b = document.getElementById('txtColumns').value; //No of column you want
if (a == "" || b == "") {
alert("Please enter some numeric value");
} else {
tableEle = document.createElement('table');
for (var i = 0; i < a; i++) {
rowEle = document.createElement('tr');
for (var j = 0; j < b; j++) {
colEle = document.createElement('td');
rowEle.appendChild(colEle);
}
tableEle.appendChild(rowEle);
}
$(myTableDiv).html(tableEle);
}
}
Try something like this:
var
tds = '<td>Data'.repeat(col_cnt),
trs = ('<tr>'+tds).repeat(row_cnt),
table = '<table>' + trs + '</table>;
Then place the table in your container:
document.getElementById('tablePreviewArea').innerHTML = table;
Or with JQuery:
$('#tablePreviewArea').html(table);
Here is the JSFiddle using native js.
Here is the JSFiddle using jQuery.
About the string repeat function
I got the repeat function from here:
String.prototype.repeat = function( num )
{
return new Array( num + 1 ).join( this );
}
I had one sample code...try this and modify it according to your requirement. May it helps you out.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Untitled Document</title>
<style type="text/css">
#mytab td{
width:100px;
height:20px;
background:#cccccc;
}
</style>
<script type="text/javascript">
function addRow(){
var root=document.getElementById('mytab').getElementsByTagName('tbody')[0];
var rows=root.getElementsByTagName('tr');
var clone=cloneEl(rows[rows.length-1]);
root.appendChild(clone);
}
function addColumn(){
var rows=document.getElementById('mytab').getElementsByTagName('tr'), i=0, r, c, clone;
while(r=rows[i++]){
c=r.getElementsByTagName('td');
clone=cloneEl(c[c.length-1]);
c[0].parentNode.appendChild(clone);
}
}
function cloneEl(el){
var clo=el.cloneNode(true);
return clo;
}
</script>
</head>
<body>
<form action="">
<input type="button" value="Add a Row" onclick="addRow()">
<input type="button" value="Add a Column" onclick="addColumn()">
</form>
<br>
<table id="mytab" border="1" cellspacing="0" cellpadding="0">
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
</table>
</body>
</html>
Instead of button , you can use select menu and pass the value to variable. It will create row ,column as per the value.
i have seen similar questions to this but none can assist me.as my code is missing some results and i don't now why.
as seen on the image above the output is 6 results instead of 12
This is the code am using to get the values
//Fetch Sales**********************************************
function fetchsales(){
var Dt = document.getElementById("sDate").value;
var Usr = document.getElementById("UserID").value;
var Stp = document.getElementById("tstamp").value;
var e = document.getElementById("sdepot");
var Dpt = e.options[e.selectedIndex].value;
var sale = new Array();
var Tbl = document.getElementById('tbl_sales'); //html table
var tbody = Tbl.tBodies[0]; // Optional, based on what is rendered
for (var i = 2; i < tbody.rows.length; i++) {
var row = tbody.rows[i];
for (var j = 2; j < row.cells.length; j++) {
var cell = row.cells[j];
// For Every Cell get the textbox value
var unitsold = cell.childNodes[0].value ;
//Get selectbox distributor
var Sdist = row.cells[1].childNodes[0]; //Select box always on second coloumn
var Distributor = Sdist.options[Sdist.selectedIndex].value;
//Get selectbox Product
var Sprod = tbody.rows[1].cells[j].childNodes[0];
var Product = Sprod.options[Sprod.selectedIndex].value;
sale[(j*i)] = new Array ('('+Dt,Dpt,Product,unitsold,Distributor,Usr,Stp+')<br/>');
}
}
//Debug
var fsale = new Array();
fsale = sale.filter(function(n){return n});
document.getElementById("output").innerHTML = fsale;
}
//End Fetch Sales******************************************************
And this is the Whole Document with the Above code included.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<style>
</style>
<script type="text/javascript">
//*********************************Start Add Row **********************************************************
function addRowToTable() {
var tbl = document.getElementById('tbl_sales'); //html table
var columnCount = tbl.rows[0].cells.length; //no. of columns in table
var rowCount = tbl.rows.length; //no. of rows in table
var row = tbl.insertRow(rowCount); //insert a row method
// For Every Row Added a Checkbox on first cell--------------------------------------
var cell_1 = row.insertCell(0); //Create a new cell
var element_1 = document.createElement("input"); //create a new element
element_1.type = "checkbox"; //set element type
element_1.setAttribute('id', 'newCheckbox'); //set id attribute
cell_1.appendChild(element_1); //Append element to created cell
// For Every Row Added add a Select box on Second cell------------------------------
var cell_2 = row.insertCell(1);
var element_2 = document.createElement('select');
element_2.name = 'SelDist' + rowCount;
element_2.className = 'styled-select';
element_2.options[0] = new Option('John Doe', '1');
element_2.options[1] = new Option('Dane Doe', '2');
cell_2.appendChild(element_2);
// For Every Row Added add a textbox on the rest of the cells starting with the 3rd,4th,5th... coloumns going on...
if (columnCount >= 2) { //Add cells for more than 2 columns
for (var i = 3; i <= columnCount; i++) {
var newCel = row.insertCell(i - 1); //create a new cell
var element_3 = document.createElement("input");
element_3.type = "text";
element_3.className = "rounded";
element_3.name = 'txt_r'+ rowCount +'c'+(i-1);
element_3.id = 'txt_r'+ rowCount +'c'+(i-1);
element_3.size = 5;
element_3.value = 'txt_r'+rowCount+'c'+(i-1);
newCel.appendChild(element_3);
}
}
}
//***************************** End Add Row ***************************************************************
// *****************************Start Add Column**********************************************************
function addColumn() {
var tblBodyObj = document.getElementById('tbl_sales').tBodies[0];
var rowCount = tblBodyObj.rows.length;
//for every Coloumn Added Add checkbox on first row ----------------------------------------------
var newchkbxcell = tblBodyObj.rows[0].insertCell(-1);
var element_4 = document.createElement("input");
element_4.type = "checkbox";
element_4.setAttribute('id', 'newCheckbox');
newchkbxcell.appendChild(element_4);
//For Every Coloumn Added add Drop down list on second row-------------------------------------
var newselectboxcell = tblBodyObj.rows[1].insertCell(-1);
var element_5 = document.createElement('select');
element_5.name = 'SelProd' + rowCount;
element_5.className = 'styled-select';
element_5.options[0] = new Option('Product11', '11');
element_5.options[1] = new Option('Product12', '12');
element_5.options[2] = new Option('Product13', '13');
element_5.options[3] = new Option('Product14', '14');
element_5.options[4] = new Option('Product15', '15');
element_5.options[5] = new Option('Product16', '16');
newselectboxcell.appendChild(element_5);
// For Every Coloumn Added add a textbox on the rest of the row cells starting with the 3rd,4th,5th......
for (var i = 2; i < tblBodyObj.rows.length; i++) { //Add cells in all rows starting with 3rd row
var newCell = tblBodyObj.rows[i].insertCell(-1); //create new cell
var ClmCount = ((tblBodyObj.rows[0].cells.length)-1);
var element_6 = document.createElement("input");
element_6.type = "text";
element_6.className = "rounded"
element_6.name = 'txt_r'+ i + 'c' + ClmCount;
element_6.id = 'txt_r'+ i + 'c' + ClmCount;
element_6.size = 5;
element_6.value = 'txt_r'+i+'c'+ClmCount;
newCell.appendChild(element_6)
}
}
//*****************************Start Delete Selected Rows **************************************************
function deleteSelectedRows() {
var tb = document.getElementById('tbl_sales');
var NoOfrows = tb.rows.length;
for (var i = 0; i < NoOfrows; i++) {
var row = tb.rows[i];
var chkbox = row.cells[0].childNodes[0]; //get check box object
if (null != chkbox && true == chkbox.checked) { //wheather check box is selected
tb.deleteRow(i); //delete the selected row
NoOfrows--; //decrease rowcount by 1
i--;
}
}
}
//*****************************End Delete Selected Columns **************************************************
//*****************************Start Delete Selected Columns ************************************************
function deleteSelectedColoumns() {
var tb = document.getElementById('tbl_sales'); //html table
var NoOfcolumns = tb.rows[0].cells.length; //no. of columns in table
for (var clm = 3; clm < NoOfcolumns; clm++) {
var rw = tb.rows[0]; //0th row with checkboxes
var chkbox = rw.cells[clm].childNodes[0];
console.log('Current Coloumn:'+clm+',', NoOfcolumns, chkbox); // test with Ctrl+Shift+K or F12
if (null != chkbox && true == chkbox.checked) {
//-----------------------------------------------------
var lastrow = tb.rows;
for (var x = 0; x < lastrow.length; x++) {
tb.rows[x].deleteCell(clm);
}
//-----------------------------------------
NoOfcolumns--;
clm--;
} else {
//alert("not selected");
}
}
}
//*****************************End Delete Selected Columns **************************************************
//Fetch Sales**********************************************
function fetchsales(){
var Dt = document.getElementById("sDate").value;
var Usr = document.getElementById("UserID").value;
var Stp = document.getElementById("tstamp").value;
var e = document.getElementById("sdepot");
var Dpt = e.options[e.selectedIndex].value;
var sale = new Array();
var Tbl = document.getElementById('tbl_sales'); //html table
var tbody = Tbl.tBodies[0]; // Optional, based on what is rendered
for (var i = 2; i < tbody.rows.length; i++) {
var row = tbody.rows[i];
for (var j = 2; j < row.cells.length; j++) {
var cell = row.cells[j];
// For Every Cell get the textbox value
var unitsold = cell.childNodes[0].value ;
//Get selectbox distributor
var Sdist = row.cells[1].childNodes[0]; //Select box always on second coloumn
var Distributor = Sdist.options[Sdist.selectedIndex].value;
//Get selectbox Product
var Sprod = tbody.rows[1].cells[j].childNodes[0];
var Product = Sprod.options[Sprod.selectedIndex].value;
sale[(j*i)] = new Array ('('+Dt,Dpt,Product,unitsold,Distributor,Usr,Stp+')<br/>');
}
}
//Debug
var fsale = new Array();
fsale = sale.filter(function(n){return n});
document.getElementById("output").innerHTML = fsale;
}
//End Fetch Sales******************************************************
//on loading create 3 coloumns and 2 rows
window.onload = function () {addColumn();addColumn();addColumn();addRowToTable();addRowToTable();};
</script>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Distributor Sales</title>
</head>
<body>
<!--A--->
<div class="datagrid shadow" style="float:left; min-width:160px; width:220px">
<table id="top">
<tbody>
<tr>
<td width="100px">
<label for="textfield2">Date</label>
<input id="sDate" name="sDate" type="date" size="10" class="rounded" value="2013-06-04" />
</td>
</tr>
<tr class="alt">
<td width="220px">
<label for="select">Depot</label>
<select name="sdepot" id="sdepot" class="styled-select">
<option value="1">Muranga</option>
<option value="2" selected="selected">Nyahururu</option>
<option value="3">Karatina</option>
</select>
</td>
</tr>
</tbody>
</table>
</div>
<!--C--->
<div class="datagrid shadow" style="float:left; margin-left:20px; width:250px; min-width:250px">
<table>
<tbody>
<tr>
<td>
<label for="textfield4">User ID</label>
<input id="UserID" name="UserID" type="text" class="rounded" value="121" />
</td>
</tr>
<tr class="alt">
<td>
<label for="textfield5">Time Stamp</label>
<input type="date" name="tstamp" id="tstamp" class="rounded" value="2013-06-02" />
</td>
</tr>
</tbody>
</table>
</div>
<div style="clear:both"></div>
</br>
<div class="mainG gradient-style shadow" style="min-width:500px; min-height:120px">
<table id="tbl_sales" border="1" bordercolor="#E1EEF4" background="table-images/blurry.jpg">
<tr>
<td></td>
<td><input type="button" name="button3" id="button3" value="-Row" onclick="deleteSelectedRows()" />
<input type="button" name="button4" id="button4" value="-Coloumn" onclick="deleteSelectedColoumns()" /></td>
</tr>
<tr>
<td></td>
<td><input type="button" name="addrowbutton" id="adrwbutton" value="+Row" onclick="addRowToTable();" />
<input type="button" name="adclmbutton" id="addclmnbutton" value="+Coloumn" onclick="addColumn()" />
</td>
</tr>
</table>
</div>
<div style="clear:both"></div>
<br/>
<div class="datagrid shadow" style="float:left; margin-left:20px; width:200px; min-width:200px; padding-left:10px">
<table id="bottom1" style="min-width:200px">
<tbody>
<tr>
<td>
<div align="center"><input name="myBtn" type="submit" value="Save Information" onClick="javascript:fetchsales();">
</td>
</tr>
</tbody>
</table>
</div>
<div style="clear:both"></div>
<br/>
<div id="output"></div>
</body>
</html>
NB: am hoping to concatenate the result to a mysql insert statement
Any assistance will be greatly appreciated.
The problem comes from this line:
sale[(j*i)] = new Array ('('+Dt,Dpt,Product,unitsold,Distributor,Usr,Stp+')<br/>');
using the for loops indexes multiplied by themselves doesnt ensure unique array indexes, in some cases they are repeated (like for example 2*3 and 3*2) and the previous value in the array gets overwritten.