How to detect a checkbox (in a table's cell) on or off

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I create a table dynamically. Each row's last cell is a checkbox (see the code below).

var chk = document.createElement('input');
     chk.setAttribute('type', 'checkbox');
     var cell = row.insertCell(-1);
     cell.appendChild(chk);

Using the piece of code below:

this.dvTbl.on('click', 'tr', function() {
     var v = this.cells[1].innerHTML;
     var v2 = this.cells[2];  // a checkbox in this cell
     // add code here

When I click a checkbox, it checked on/off. How can I detect a checkbox's css? e.g. to detect it is on or off? Thanks.

What I have tried:

Can find some code for detecting a checkbox, but not the checkbox in a table's cell.

Posted 1-Jun-21 9:59am

s yu

Updated 1-Jun-21 22:21pm

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Chris Copeland · Accepted Answer · 2021-06-01T22:21:00

If you're using vanilla Javascript you can select the first input element from the cell and check the checked state like so:

JavaScript

var v2 = this.cells[2];
var checkbox = v2.getElementsByTagName("input")[0];
var checked = checkbox.checked;

Alternatively you can just look at the children[^] property instead, though I find it better to be explicit when looking up elements.