Develop Reference

Get dynamically created table cell value on click of table button

I am creating dynamic table which I has 3 columns. First columns has campaign name 2nd & 3rd column is status of that campaign which is image button. What I expect when I click status button it should return respective campaign name. Nothing happens when I click on status button.
would be great if you can provide solution.
function displayCampaigns(campaignNames) {
var html = "<table class='table table - responsive - md' id='campaignTable'>";
for (var i = 0; i < campaignNames.length; i++) {
html += "<tr>";
html += "<td>" + campaignNames[i] + "</td>";
html += "<td><input type='button' id='telStatus' class='btn btn-success btn-circle btn-sm' onclick=function(){getRow(this)}/></td>";
html += "<td><img src='ready.jpg' id='readyStatus' /></td>";
html += "</tr>";
}
html += "</table>";
document.getElementById("demo").innerHTML = html;
function getRow(obj) {
var txt;
e.preventDefault();
txt = $(this).parent().prev().prev().text();
alert(txt + 'selected txt');
}

i have fixed your problem.
function displayCampaigns(campaignNames) {
var html = "<table class='table table - responsive - md' id='campaignTable'>";
for (var i = 0; i < campaignNames.length; i++) {
html += "<tr>";
html += "<td class='parent'>" + campaignNames[i] + "</td>";
html += "<td><input type='button' id='telStatus' class='btn btn-success btn-circle btn-sm' onclick=getRow(this) /></td>";
html += "<td><img src='ready.jpg' id='readyStatus' /></td>";
html += "</tr>";
}
html += "</table>";
document.getElementById("demo").innerHTML = html;
}
function getRow(event) {
var txt = $(event).parent().prev().text();;
alert(txt + ' selected txt');
}
var a = ["test","test2"];
displayCampaigns(a);
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="demo"></div>

You could save the #demo object in a variable and attach an event listener to that. On click check if the event target has a class that you attach to your buttons, like telStatus (don't use that as id because having more than one row will result in several html elements having the same id). Add the campaign name as id or a data attribute to the table rows and just check the clicked buttons parentNodes to retrieve the id/data attribue.
var campaignNames = [
'abc', 'efg'
]
var demo = document.querySelector('#demo');
displayCampaigns(campaignNames);
function displayCampaigns(campaignNames) {
var html = "<table class='table table-responsive-md' id='campaignTable'>";
for (var i = 0; i < campaignNames.length; i++) {
html += "<tr id='" + campaignNames[i] +"'>";
html += "<td>" + campaignNames[i] + "</td>";
html += "<td><input type='button' class='telStatus btn btn-success btn-circle btn-sm'/></td>";
html += "<td><img src='ready.jpg' /></td>";
html += "</tr>";
}
html += "</table>";
demo.innerHTML = html;
}
demo.addEventListener('click', function (evt) {
if (!evt.target.classList.contains('telStatus')) return;
var parentTr = evt.target.parentNode.parentNode;
var campaignName = parentTr.id;
alert(campaignName + ' selected txt');
});

How to reorder columns with Knex?

I am pulling all of my data from an Sqlite3 table using Knex, electron and JavaScript and I wish to reorder the columns either on the Knex query or in the HTML/JavaScript side.
My sqlite3 db has the following header data:
id|Role|Password|Reference
With the following code, the table displays in the following order:
Password|Reference|Role|id
I have attempted to utilize the .orderBy method in Knex and have also attempted to reorder in JavaScript, but I cannot seem to reorder the columns.
The Electron side of things, I have:
ipcMain.on('getUserTable:all', (event) => {
let getUserTable =
knex('User').select(['id','Role','Reference','Password']).orderBy('Role');
getUserTable.then(function(tableData){
newWin.webContents.send("userResultSent", tableData);
});
});
In the HTML side of things, I have:
ipc.on('userResultSent', (event, tableData) => {
var html = '<table>';
html += '<tr>';
for( var j in tableData[0] ) {
html += '<th>' + j + '</th>';
}
html += '</tr>';
for( var i = 0; i < tableData.length; i++) {
html += '<tr>';
for( var j in tableData[i] ) {
html += '<td>' + tableData[i][j] + '</td>';
}
}
html += '</table>';
document.getElementById('db_output_container').innerHTML = html;
});
I wish to be able to query the db so that the array displays in the exact order as in the table.

The problem with your current approach is that object are unordered bags of properties. So it does not matter how order your columns - properties order is not guaranteed.
If you need specific order you could use Array instead.
Since you have general code to display tabular data you could do the following
ipcMain.on('getUserTable:all', (event) => {
const columns = ['id','role','reference','password']
let getUserTable =
knex('User').select(columns).orderBy('role');
getUserTable.then(function(tableData){
newWin.webContents.send("userResultSent", {columns, tableData});
});
});
When creating html
ipc.on('userResultSent', (event, {columns, tableData}) => {
var html = '<table>';
html += '<tr>';
columns.forEach(column => {
// if you want to capitalize names just do it here
html += '<th>' + column + '</th>';
})
html += '</tr>';
for( var i = 0; i < tableData.length; i++) {
html += '<tr>';
columns.forEach(column => {
html += '<td>' + tableData[i][column] + '</td>';
})
html += '</tr>';
}
html += '</table>';
document.getElementById('db_output_container').innerHTML = html;
})

At the end of the second for loop, you should close the tr tag. Indeed, you open it right after the second for loop but you don't close it.
I haven't tested yet but it should work.
Your html file should looks like this.
ipc.on('userResultSent', (event, tableData) => {
var html = '<table>';
html += '<tr>';
for( var j in tableData[0] ) {
html += '<th>' + j + '</th>';
}
html += '</tr>';
for( var i = 0; i < tableData.length; i++) {
html += '<tr>';
for( var j in tableData[i] ) {
html += '<td>' + tableData[i][j] + '</td>';
}
html += '</tr>'; /* i added this line here */
}
html += '</table>';
document.getElementById('db_output_container').innerHTML = html;
});

iterate through a html table and get row number for each row in javascript

I want to be able to iterate though a html table, get the number of rows, and output the row number of each row on the leftmost field. However, I have 2 problems: not being able to get the number of rows and not getting the desired output.
$(document).ready(function($) {
function create_html_table(tbl_data) {
var tbl = '';
tbl += '<table id ="datarepo">';
tbl += '<thead>';
//Some headers
tbl += '</thead>';
tbl += '<tbody>';
$.each(tbl_data, function(index, val) {
/* This is what I want to use to get the number of rows in the table.
However, uncommenting the following line will cause the whole table to disappear altogether.*/
// var numberrows = document.getElementById("datarepo").rows.length;
// Using static value here instead of numberrows because it is not working.
for (i = 1; i <= 2; i++) {
tbl += '<tr>';
tbl += '<td >' + i + '</td>';
tbl += '<td ><div col_name="filename">' + val['filename'] + '</div></td>';
tbl += '</tr>';
}
});
tbl += '</tbody>';
tbl += '</table>';
}
}
Desired output:
What I got:

You can just get rid of your for loop and use the index of the each loop plus one:
$.each(tbl_data, function(index, val) {
tbl += '<tr>';
tbl += '<td >' + (index + 1) + '</td>';
tbl += '<td ><div col_name="filename">' + val['filename'] + '</div></td>';
tbl += '</tr>';
});

How to incorporate CSS into a table

I would like to put CSS code into my table but don't want to styles at every row of the table. I have the following code:
CSS:
.statetable th
{
width: 250px;
color: red;
text-align: left;
}
.statetable tr
{
width: 250px;
}
JavaScript:
function showState()
{
myTable = "<table class='statetable'><br><th><td>Type</td>";
myTable += "<td>Value</td></th>";
createRow("------------------", "------------");
createRow("Layout", (document.getElementById("startradio").form.format == "Default"));
myTable +="</table>";
document.getElementById("tableHolder").innerHTML = myTable;
}
function createRow(type, value)
{
myTable += "<table class='statetable'><tr><td>" + type + "</td>";
myTable += "<td>" + value + "</td></tr>";
}
HTML:
<input type="button" id="button" value="Click to show states" onclick="showState()"/>
<div id="tableHolder"></div>
The style is not working though. I have placed my th and tr's and placed the css with them but I am not sure what am I doing wrong.

Replace these:
myTable = "<table class='statetable'><br><th><td>Type</td>";
myTable += "<td>Value</td></th>";
With these:
myTable = "<table class='statetable'><tr><th>Type</th>";
myTable += "<th>Value</th></tr>";
Also, in createRow, replace:
myTable += "<table class='statetable'><tr><td>" + type + "</td>";
myTable += "<td>" + value + "</td></tr>";
With:
myTable += "<tr><td>" + type + "</td><td>" + value + "</td></tr>";

You are ending up with more starting <table> tags then closing ones. The createRow() method should not return a starting <table> tag.
Also, .set width on the table instead of the <tr>/<th>.

Create a table in javascript from returned JSON object by http get

This is the function in my javascript. Triggered by an onclick function by an another function.
function getValueUsingParentTag(){
var tv_type = [];
var screen_size = [];
var connectivity = [];
var features = [];
var chkArray = [tv_type,screen_size,connectivity,features];
$("#tvtype input:checked").each(function() {
tv_type.push($(this).val());
});
$("#screensize input:checked").each(function() {
screen_size.push($(this).val());
});
$("#connection input:checked").each(function() {
connectivity.push($(this).val());
});
$("#feature input:checked").each(function() {
features.push($(this).val());
});
console.log(chkArray);
//alert(JSON.stringify(chkArray));
alert('hello');
$.get("output-tv.php",{tv_type:tv_type,screen_size:screen_size,connectivity:connectivity,features:features},function(chkArray){
});
}
This is the sample json object returned
{"result":[
{"product_code":"B2810","tv_name":"32B2810","size":"32","tv_type":"INTERNET TV"},
{"product_code":"B2610","tv_name":"48B2610","size":"48","tv_type":"INTERNET TV"}
]}
I need to create a table in javascript based on the json object returned. I dont know how. Please Help.

following function builds the table in a string.
function getTable(data) {
var html = "";
html += "<table><tr><td>product_code</td><td>tv_name</td><td>size</td><td>tv_type</td></tr>";
html += "<tr>";
for(var i = 0, ceiling = data.result.length; i < ceiling; i++) {
var row = data.result[i];
html += "<td>" + row.product_code + "</td>";
html += "<td>" + row.tv_name + "</td>";
html += "<td>" + row.size + "</td>";
html += "<td>" + row.tv_type + "</td>";
}
html += "</tr>";
html += "</table>";
return html;
}
suppose you have a div with id mydiv, you can add the table to this div with following code:
document.getElementById("mydiv").innerHTML = getTable(data);

Here's a simple Javascript only loop example:
http://jsfiddle.net/mCLVL/
var tableData = {"result":[
{"product_code":"B2810","tv_name":"32B2810","size":"32","tv_type":"INTERNET TV"},
{"product_code":"B2610","tv_name":"48B2610","size":"48","tv_type":"INTERNET TV"}
]};
var tableHTML = "<table>";
for (var i = 0; i < tableData["result"].length; i++) {
tableHTML += "<tr>";
tableHTML += "<td>" + tableData["result"][i]["product_code"] + "</td>";
tableHTML += "<td>" + tableData["result"][i]["tv_name"] + "</td>";
tableHTML += "<td>" + tableData["result"][i]["size"] + "</td>";
tableHTML += "<td>" + tableData["result"][i]["tv_type"] + "</td>";
tableHTML += "</tr>";
}
tableHTML += "</table>";
console.log(tableHTML);

It will be so simple by using JSRender. I made a fiddle using jsrender template check it.
Using JSRender Fiddle