Develop Reference

How do I get and pass the field of the row having class="name" in the following html?

<tbody>
<tr>
<td>gibberish</td>
<td class="name" hidden>200398</td>
<td>iPhone X 64Gb Grey</td>
<td>$999.00</td>
<td>1</td>
<td>
<button onclick="fetchdata(parameter)">Fetch Details</button>
</td>
</tr>
</tbody>
In the above html, I want that the function fetchdata('parameter') to contain the text content of the td which has a class of name and is hidden, as the parameter.
OR
I need a way in which I can get the text content of the td having class of name in my javascript function.
i.e.
function fetchdata() {
const name = document.somethingThatGivesMeName()
}
NOTE: There are going to be multiple rows that I may require to get the name of so I can't directly do document.queryselector('.name')
Sorry, This might be pretty simple but I can't quite figure it out.

When clicking the button find the first row up in the tree relative to the button with the closest method. Then from the row select the element with the class name and read the textContent or innerText of that element.
const buttons = document.querySelectorAll('.js-fetch-details');
function fetchDetails(event) {
const row = event.target.closest('tr');
const name = row.querySelector('.name').textContent;
console.log(name);
}
buttons.forEach(button => button.addEventListener('click', fetchDetails));
<table>
<tbody>
<tr>
<td>gibberish</td>
<td class="name" hidden>200398</td>
<td>iPhone X 64Gb Grey</td>
<td>$999.00</td>
<td>1</td>
<td>
<button class="js-fetch-details">Fetch Details</button>
</td>
</tr>
</tbody>
</table>

You just need the quotes ':
function fetchdata(value){
console.log(value)
}
<tbody>
<tr>
<td>gibberish</td>
<td class="name" hidden>200398</td>
<td>iPhone X 64Gb Grey</td>
<td>$999.00</td>
<td>1</td>
<td>
<button onclick="fetchdata('parameter')">Fetch Details</button>
</td>
</tr>
</tbody>
or you can use event listener and data value:
document.querySelectorAll('button').forEach(el => {
el.addEventListener('click', e => {
e = e || window.event;
e = e.target || e.srcElement;
console.log(e.dataset.value)
})
})
<tbody>
<tr>
<td>gibberish</td>
<td class="name" hidden>200398</td>
<td>iPhone X 64Gb Grey</td>
<td>$999.00</td>
<td>1</td>
<td>
<button data-value="parameter">Fetch Details</button>
</td>
</tr>
</tbody>

You can use document.getElementsByClassName('name')
This will get all the elements that have class of name.

I would put the listener on the <tbody> instead.
document.querySelector('tbody').addEventListener('click', (e) => {
// Clicking on the whole row
if (e.target.nodeName === 'TR') {
const name = e.target.querySelector('.name').textContent;
console.log(name);
}
// Clicking on the button
// Give the button a class
if (e.target.classList.contains('.somebuttonclass')) {
const name = e.target.parentNode.parentNode.querySelector('.name').textContent;
console.log(name);
}
});
UPDATE
closest would also work
document.querySelector('tbody').addEventListener('click', (e) => {
// Clicking on the whole row
if (e.target.nodeName === 'TR') {
const name = e.target.querySelector('.name').textContent;
console.log(name);
}
// Clicking on the button
// Give the button a class
if (e.target.classList.contains('.somebuttonclass')) {
const name = e.target.closest('tr').querySelector('.name').textContent;
console.log(name);
}
});

First you get all elements with class="name", then you pick just (the first) one with the attribute "hidden".
It's a way to do it anyway.
function fetchdata() {
const tds = document.getElementsByClassName("name")
for(let i = 0; i < tds.length; i++){
if(tds[i].getAttribute("hidden") != null) {
console.log(tds[i].innerHTML)
}
}
}
<table>
<tr>
<td class="name">gibberish</td>
<td class="name" hidden>200398</td>
<td>iPhone X 64Gb Grey</td>
<td>$999.00</td>
<td class="name">1</td>
<td>
<button onclick="fetchdata()">Fetch Details</button>
</td>
</tr>
</table>
With jQuery you can just do:
function fetchdata() {
console.log($('.name[hidden]').html());
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<table>
<tr>
<td>gibberish</td>
<td class="name" hidden>200398</td>
<td>iPhone X 64Gb Grey</td>
<td>$999.00</td>
<td>1</td>
<td>
<button onclick="fetchdata()">Fetch Details</button>
</td>
</tr>
</table>
Note that you need to have a table around your structure for any of this to work properly. You can't have tbody, tr and td outside a table.

If you use document.getElementsByClassName you will get what you want.
However, if there will be a case where more than one instance of that class name will occur, then you need to iterate through the classes and get their values.
The following should solve your problem
<html>
<head>
<script>
function fetchdata(){
var data = document.getElementsByClassName("data");
var t = data.length;
for(i = 0; i< t; i++){
var content = data[i].innerHTML;
alert (content);
}
}
</script>
<body>
<table>
<tbody>
<tr>
<td>gibberish</td>
<td class="data" hidden>200398</td>
<td>iPhone X 64Gb Grey</td>
<td>$999.00</td>
<td>1</td>
<td>
<button onclick="fetchdata()">Fetch Details</button>
</td>
</tr>
</tbody>
</table>
</body>
</html>

How to loop through a table and get the td elements to follow a condition

I just want make so it the tr hides when the td does not follow the requirements, tried with jQuery and JavaScript, don't know what's wrong.
$(document).ready(function(){
$("td").each(function() {
var id = $(this).attr("price_search");
if (id > value4 && id < value5) {
$(this).hide;
}
else {
$(this).hide;
}
});
});

You can do this.
Hope this will help you.
$(document).ready(function() {
var value4 = 2;
var value5 = 4;
$("td").each(function() {
var id = $(this).attr("price_search");
if (id > value4 && id < value5) {
$(this).hide();
} else {
$(this).show();
}
});
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<table>
<tr>
<td price_search="3">10</td>
<td price_search="2">20</td>
<td price_search="3">30</td>
</tr>
</table>

I am going to go out on a limb here and make broad assumptions on content not in the question.
Your .hide; is invalid syntax
You are missing value for two variables value4 and value4 which frankly are not well named variables at all. I will make an assumption that those are better named and that they come from somewhere during the page rendering.
I make an assumption that you have something you want to filter/hide by those upper/lower price points.
I make the assumption the attribute might contain values that need to be parsed (not a number as they are)
var lowerPricePoint = .45;
var upperPricePoint = 5.25;
$(function() {
$("td").filter('[price_search]').each(function() {
// parse out a price from perhaps formatted values
let price = Number.parseFloat($(this).attr("price_search").replace(/\$|,/g, ''));
// toggle visibility of the row
$(this).closest('tr').toggle(price > lowerPricePoint && price < upperPricePoint);
});
});
td {
border: solid black 1px;
padding: 0.4em;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<table>
<tr>
<td>Wear it</td>
<td price_search="123.13">Shoes</td>
</tr>
<tr>
<td>Drive it</td>
<td price_search="$23,123.13">Car</td>
</tr>
<tr>
<td>Drink it</td>
<td price_search="3.13">Beet Juice</td>
</tr>
<tr>
<td>Eat it</td>
<td price_search="12.13">Can of expensive corn</td>
</tr>
<tr>
<td>Cheap</td>
<td price_search="35">Radish</td>
</tr>
<tr>
<td>Use it</td>
<td price_search="1.45">Paper towel</td>
</tr>
<tr>
<td>Plain</td>
<td price_search="$1.87">Butter</td>
</tr>
<tr>
<td>Herb</td>
<td price_search="$2.45">Butter</td>
</tr>
<tr>
<td>Cheap</td>
<td price_search="15">Gum</td>
</tr>
</table>

Hide a tr only if td contains no content AFTER a specific html tag

Is it possible to examine the content within a tr, AFTER an html element (br) to see if any exists? If there is no content after the br element, I'd like to hide the parent td. Please note that the html code is system generated and I cannot edit it.
I'm just not sure where to begin with this. Any help is greatly appreciated.
<table class="tabledefault">
<tbody>
<tr>
<td id="customfields">
<table class="tabledefault">
<tbody>
<tr><!-- this TR should be hidden -->
<td id="CAT_Custom_451068"><strong>Laser Tag</strong>
<br>
</td>
</tr>
<tr>
<td id="CAT_Custom_451069"><strong>Arcade</strong>
<br>Selected
</td>
</tr>
<tr>
<td id="CAT_Custom_450908"><strong>Bounce House (45 minutes) $100</strong>
<br>False
</td>
</tr>
<tr>
<td id="CAT_Custom_451307"><strong>Party Room Rental (per hour) $75</strong>
<br>True</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>

Try using .each() , nextSibling , nodeValue , String.prototype.match() , .closest()
$("table tr td br").each(function(i, el) {
// if `br` next sibling does not contain alphanumeric characters,
// hide parent `tr` element
if (el.nextSibling.nodeType === 3
&& el.nextSibling.nodeValue.match(/\w+/) === null
|| $(el).next(":empty").length) {
$(this).closest("tr").hide()
}
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js">
</script>
<table class="tabledefault">
<tbody>
<tr>
<td id="customfields">
<table class="tabledefault">
<tbody>
<tr><!-- this TR should be hidden -->
<td id="CAT_Custom_451068"><strong>Laser Tag</strong>
<br><span></span>
</td>
</tr>
<tr>
<td id="CAT_Custom_451069"><strong>Arcade</strong>
<br>Selected
</td>
</tr>
<tr>
<td id="CAT_Custom_450908"><strong>Bounce House (45 minutes) $100</strong>
<br>False
</td>
</tr>
<tr>
<td id="CAT_Custom_451307"><strong>Party Room Rental (per hour) $75</strong>
<br>True</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>

Yes, you just get the trs, then find out if the first <br> element inside the first <td> has any following element siblings (I'm making an assumption there, that you don't want those hidden), or any following text node siblings that aren't blank. jQuery's contents is handy for that, as it includes text nodes. I'd probably loop through them backward:
$("#customfields .tabledefault tr").each(function(index) {
var $tr = $(this);
$tr.find("td:first").contents().get().reverse().some(function(node) {
if (node.nodeName.toUpperCase() === "BR") {
// Hide it, and we're done looping
$tr.hide();
return true;
}
if (node.nodeType != 3 || $.trim(node.nodeValue)) {
// Don't hide it, and we're done looping
return true;
}
});
});
I expect that can be optimized, but you get the idea.
Live Example:
var counter = 3;
tick();
function tick() {
$("#countdown").text(counter--);
if (counter < 0) {
hideIt();
} else {
setTimeout(tick, 500);
}
}
function hideIt() {
$("#customfields .tabledefault tr").each(function(index) {
var $tr = $(this);
$tr.find("td:first").contents().get().reverse().some(function(node) {
if (node.nodeName.toUpperCase() === "BR") {
// Hide it, and we're done looping
$tr.hide();
return true;
}
if (node.nodeType != 3 || $.trim(node.nodeValue)) {
// Don't hide it, and we're done looping
return true;
}
});
});
}
<table class="tabledefault">
<tbody>
<tr>
<td id="customfields">
<table class="tabledefault">
<tbody>
<tr>
<!-- this TR should be hidden -->
<td id="CAT_Custom_451068"><strong>Laser Tag</strong>
<br>
</td>
</tr>
<tr>
<td id="CAT_Custom_451069"><strong>Arcade</strong>
<br>Selected
</td>
</tr>
<tr>
<td id="CAT_Custom_450908"><strong>Bounce House (45 minutes) $100</strong>
<br>False
</td>
</tr>
<tr>
<td id="CAT_Custom_451307"><strong>Party Room Rental (per hour) $75</strong>
<br>True</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<div id="countdown"> </div>

merging <td> rows in one column of html table

I have a requirement, if i have same data in column1 of 's with same id then i need to merge those cells and show their respective values in column2.
i.e., in fiddle http://jsfiddle.net/7t9qkLc0/12/ the key column have 3rows with data 1 as row value with same id and has corresponding different values in Value column i.e., AA,BB,CC. I want to merge the 3 rows in key Column and display data 1 only once and show their corresponding values in separate rows in value column.
Similarly for data4 and data5 the values are same i.e.,FF and keys are different, i want to merge last 2 rows in Value column and dispaly FF only one time and show corresponding keys in key column. All data i'm getting would be the dynamic data. Please suggest.
Please find the fiddle http://jsfiddle.net/7t9qkLc0/12/
Sample html code:
<table width="300px" height="150px" border="1">
<tr><th>Key</th><th>Value</th></tr>
<tr>
<td id="1">data 1</td>
<td id="aa">AA</td>
</tr>
<tr>
<td id="1">data 1</td>
<td id="bb">BB</td>
</tr>
<tr>
<td id="1">data 1</td>
<td id="cc">CC</td>
</tr>
<tr>
<td id="2">data 2</td>
<td id="dd">DD</td>
</tr>
<tr>
<td id="2">data 2</td>
<td id="ee">EE</td>
</tr>
<tr>
<td id="3">data 3</td>
<td id="ff">FF</td>
</tr>
<tr>
<td id="4">data 4</td>
<td id="ff">FF</td>
</tr>
<tr>
<td id="5">data 5</td>
<td id="ff">FF</td>
</tr>
</table>
</td>
</tr>
<tr>
<td colspan="3" style="padding-left: 0px; padding-right: 0px; padding-bottom: 0px">
</td>
</tr>
</table>

Building on tkounenis' answer using Rowspan:
One option to implement what you need would be to read all the values in your table after being populated, then use a JS object literal as a data structure to figure out what rows/columns are unique.
A JS object literal requires a unique key which you can map values to. After figuring out what rows/columns should be grouped, you can either edit the original table, or hide the original table and create a new table (I'm creating new tables in this example).
I've created an example for you to create a new table either grouped by key or grouped by value. Try to edit the examples provided to introduce both requirements.
Let me know if you need more help. Best of luck.
JSFiddle: http://jsfiddle.net/biz79/x417905v/
JS (uses jQuery):
sortByCol(0);
sortByCol(1);
function sortByCol(keyCol) {
// keyCol = 0 for first col, 1 for 2nd col
var valCol = (keyCol === 0) ? 1 : 0;
var $rows = $('#presort tr');
var dict = {};
var col1name = $('th').eq(keyCol).html();
var col2name = $('th').eq(valCol).html();
for (var i = 0; i < $rows.length; i++) {
if ($rows.eq(i).children('td').length > 0) {
var key = $rows.eq(i).children('td').eq(keyCol).html();
var val = $rows.eq(i).children('td').eq(valCol).html();
if (key in dict) {
dict[key].push(val);
} else {
dict[key] = [val];
}
}
}
redrawTable(dict,col1name,col2name);
}
function redrawTable(dict,col1name,col2name) {
var $table = $('<table>').attr("border",1);
$table.css( {"width":"300px" } );
$table.append($('<tr><th>' +col1name+ '</th><th>' +col2name+ '</th>'));
for (var prop in dict) {
for (var i = 0, len = dict[prop].length; i< len; i++) {
var $row = $('<tr>');
if ( i == 0) {
$row.append( $("<td>").attr('rowspan',len).html( prop ) );
$row.append( $("<td>").html( dict[prop][i] ) );
}
else {
$row.append( $("<td>").html( dict[prop][i] ) );
}
$table.append($row);
}
}
$('div').after($table);
}

Use the rowspan attribute like so:
<table width="300px" height="150px" border="1">
<tr>
<th>Key</th>
<th>Value</th>
</tr>
<tr>
<td id="1" rowspan="3">data 1</td>
<td id="aa">AA</td>
</tr>
<tr>
<td id="bb">BB</td>
</tr>
<tr>
<td id="cc">CC</td>
</tr>
<tr>
<td id="2" rowspan="2">data 2</td>
<td id="dd">DD</td>
</tr>
<tr>
<td id="ee">EE</td>
</tr>
<tr>
<td id="3">data 3</td>
<td id="ff">FF</td>
</tr>
<tr>
<td id="4">data 4</td>
<td id="ff">FF</td>
</tr>
<tr>
<td id="5">data 5</td>
<td id="ff">FF</td>
</tr>
</table>

http://jsfiddle.net/37b793pz/4/
Can not be used more than once the same id. For that use data-id attribute
HTML:
<table width="300px" height="150px" border="1">
<tr>
<th>Key</th>
<th>Value</th>
</tr>
<tr>
<td data-id="key1">data 1</td>
<td data-id="valaa">AA</td>
</tr>
<tr>
<td data-id="key1">data 1</td>
<td data-id="valbb">BB</td>
</tr>
<tr>
<td data-id="key1">data 1</td>
<td data-id="valcc">CC</td>
</tr>
<tr>
<td data-id="key2">data 2</td>
<td data-id="valdd">DD</td>
</tr>
<tr>
<td data-id="key2">data 2</td>
<td data-id="valee">EE</td>
</tr>
<tr>
<td data-id="key3">data 3</td>
<td data-id="valff">FF</td>
</tr>
<tr>
<td data-id="key4">data 4</td>
<td data-id="valff">FF</td>
</tr>
<tr>
<td data-id="key5">data 5</td>
<td data-id="valff">FF</td>
</tr>
</table>
</td>
</tr>
<tr>
<td colspan="3" style="padding-left: 0px; padding-right: 0px; padding-bottom: 0px"></td>
</tr>
</table>
JQ:
//merge cells in key column
function mergerKey() {
// prevents the same attribute is used more than once Ip
var idA = [];
// finds all cells id column Key
$('td[data-id^="key"]').each(function () {
var id = $(this).attr('data-id');
// prevents the same attribute is used more than once IIp
if ($.inArray(id, idA) == -1) {
idA.push(id);
// finds all cells that have the same data-id attribute
var $td = $('td[data-id="' + id + '"]');
//counts the number of cells with the same data-id
var count = $td.size();
if (count > 1) {
//If there is more than one
//then merging
$td.not(":eq(0)").remove();
$td.attr('rowspan', count);
}
}
})
}
//similar logic as for mergerKey()
function mergerVal() {
var idA = [];
$('td[data-id^="val"]').each(function () {
var id = $(this).attr('data-id');
if ($.inArray(id, idA) == -1) {
idA.push(id);
var $td = $('td[data-id="' + id + '"]');
var count = $td.size();
if (count > 1) {
$td.not(":eq(0)").remove();
$td.attr('rowspan', count);
}
}
})
}
mergerKey();
mergerVal();

Use below snippet of javascript. It should work fine for what you are looking.
<script type="text/javascript">
function mergeCommonCells(table, columnIndexToMerge){
previous = null;
cellToExtend = null;
table.find("td:nth-child("+columnIndexToMerge+")").each(function(){
jthis = $(this);
content = jthis.text();
if(previous == content){
jthis.remove();
if(cellToExtend.attr("rowspan") == undefined){
cellToExtend.attr("rowspan", 2);
}
else{
currentrowspan = parseInt(cellToExtend.attr("rowspan"));
cellToExtend.attr("rowspan", currentrowspan+1);
}
}
else{
previous = content;
cellToExtend = jthis;
}
});
};
mergeCommonCells($("#tableId"), 1);
</script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js"></script>

How to hide tr items when td is 0 in jquery?

I want to hide all of the <tr> where td's text is 0. How can I do that? I have to mention that in reality i have more than 600 rows. But the example below is a demo. THX
<table id ="list2">
<tbody>
<tr>
<td>2</td>
<td>213</td>
<td id ="hideRow">0</td>
<tr>
<tr>
<td>vb</td>
<td>asf</td>
<td id ="hideRow">0</td>
<tr>
<tr>
<td>cxvb</td>
<td>xcvb</td>
<td id ="hideRow">2</td>
<tr>
<tr>
<td>cas</td>
<td>asdf</td>
<td id ="hideRow">45</td>
<tr>
</tbody>
</table>
This is my try :| . The event is loaded by onclick event
$('#list2').find("tr td #hideRow").each(function(){
var txt2 = $(this).text();
if (txt2 =="0"){
$('#list2').find("tr").each(function(){
$(this).hide();
});
}
})

First of all do not use id for duplicate names. Try doing it like following.
<table id ="list2">
<tbody>
<tr>
<td>2</td>
<td>213</td>
<td class="hideRow">0</td>
<tr>
<tr>
<td>vb</td>
<td>asf</td>
<td class="hideRow">0</td>
<tr>
<tr>
<td>cxvb</td>
<td>xcvb</td>
<td class="hideRow">2</td>
<tr>
<tr>
<td>cas</td>
<td>asdf</td>
<td class="hideRow">45</td>
<tr>
</tbody>
</table>
$('#list2').find(".hideRow").each(function(){
var txt2 = $(this).text();
if (txt2 =="0"){
$(this).parent().hide();
}
})

IDs on elements need to be unique, you can't have multiple <td id="hideRow"> elements and expect things to play nicely all of the time. I'd suggest changing it to a class. Then, select all elements:
var elems = $('span.hideRow');
Filter to those whose text is 0:
elems = elems.filter(function() {
return $(this).text() === "0";
});
Get their parent <tr> element:
elems = elems.closest('tr');
Then, finally, hide them:
elems.hide();
That can, obviously, all be done in one line:
$('span.hideRow').filter(function() {return $(this).text() === "0";}).closest('tr').hide();