Pass Checkbox checked value to Script Variable

Question

I have a table with a checkbox column - when you click the checkbox it performs a script that includes an AJAX request. I'm trying to set the checked state into a variable so I can then include this as a parameter in the AJAX POST request but I'm not able to get this into a variable so far.

Here's my checkbox input field with the script that is simplified to just capture the checked state of the input in the checkedState variable:

$(document).ready(function() {
  $("input.select-item").click(function() {
    var productID = $(this).val();
    var checkedState = $("input.select-item").attr("checked");
    console.log(checkedState);
  });
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.2.3/jquery.min.js"></script>

<td id="AT36288"><input type="checkbox" class="select-item checkbox" name="select-item" value="AT36288" /></td>

So if the checkbox was not checked and the user checks this I would like to capture the value of "checked" in the variable, and if the checkbox was checked and the user unchecked this I would like to capture the value of "uncheck" in the variable. I'm getting an undefined result for the variable in the console.

I just put the checkbox in the snippet and closed your DOM ready handler, and it seems to work just fine? — adeneo
– adeneo, Commented Jul 22, 2017 at 10:06
You have better to use var checkedState = $("input.select-item").prop("checked"); or var checkedState = $("input.select-item").is(":checked");. And if you want to get checked/uncheck strings, you can use: var checkedState = $("input.select-item").is(":checked") ? "checked" : "uncheck"; BUT passing boolean instead (true or false) seems more legit — A. Wolff
– A. Wolff, Commented Jul 22, 2017 at 10:09

JYoThI · Accepted Answer · 2017-07-22 10:17:07Z

2

1st : you need to use is checked $(this).is(":checked")

2nd : you need to use $(this) instead of $("input.select-item").attr("checked") because you need to refer the currently clicked element instead of class name $("input.select-item").

$(document).ready(function() {
  $("input.select-item").click(function() {
    var productID = $(this).val();
    var checkedState = $(this).is(":checked");
    console.log(checkedState);
  });
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.2.3/jquery.min.js"></script>

<td id="AT36288"><input type="checkbox" class="select-item checkbox" name="select-item" value="AT36288" /></td>

edited Jul 22, 2017 at 10:17

answered Jul 22, 2017 at 10:10

JYoThI

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Bannarisamy Shanmugam · Accepted Answer · 2017-07-22 10:11:48Z

1

Hi the checkboxes and radioboxes events can be tracked better by change event. In jQuery you can check the status of the input field by following: $("input.select-item").is(":checked") or simply $(".select-item").is(":checked") Hope this helps.

answered Jul 22, 2017 at 10:11

Bannarisamy Shanmugam

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