Using jQuery to Check if Checkbox is Checked

To check if a checkbox is checked using jQuery, the simplest way is to use is() combined with “:checked”.

$('#checkbox').is(':checked');

Let’s say I have the following HTML:

<div id="div">
    <input type="checkbox" name="checkbox-set-1" id="checkbox-1" value="Checkbox 1">
    <input type="checkbox" name="checkbox-set-1" id="checkbox-2" value="Checkbox 2" checked>
</div>

If I want to see if the checkboxes are checked, we can do the following:

var isChecked1 = $('#checkbox-1').is(':checked');
console.log(isChecked1); // false

var isChecked = $('#checkbox-2').is(':checked');
console.log(isChecked2); // true

If you are using WordPress, don’t forget to change the $ to jQuery as below:

var isChecked1 = jQuery('#checkbox-1').is(':checked');
var isChecked2 = jQuery('#checkbox-2').is(':checked');

Check if Checkbox is Checked Using jQuery When Checkbox is Clicked

Many times when creating a web page and the user experience, we want to check certain conditions based on an interaction with another element on the web page.

We can check if a checkbox is checked using jQuery very easily by combining the is() method with a click event.

Let’s say we have the following HTML code and we want to display the checked value of our checkbox in the span below:

<div id="div1">
    <p>Click the Checkbox to Update the "Checked" status of Checkbox</p>
    <label for="checkbox-set-1">Checkbox </label>
    <input type="checkbox" name="checkbox-set-1" id="checkbox-1" value="Checkbox">
    <p>The value of the checkbox is: <span id="checkbox-value"></span>.</p>
</div>

We can utilize both the jQuery click() method and jQuery is() method to find the value of the checkbox. Then we will change the text of the span and display true or false.

Below is the Javascript code which will allow us to see if our checkbox is checked and then display that value.

$('#checkbox-1').click(function(){
    $("#div1 p span").text($('#checkbox-1').is(':checked'));
}); 

The final code and output for this example of how to check if a checkbox is checked using jQuery and Javascript is below:

Code Output:

Full Code:

<div class="html-code-output">
<div id="div1">
    <p>Click the Checkbox to Update the "Checked" status of Checkbox</p>
    <label for="checkbox-set-1">Checkbox </label>
    <input type="checkbox" name="checkbox-set-1" id="checkbox-1" value="Checkbox">
    <p>The value of the checkbox is: <span id="checkbox-value"></span>.</p>
</div>
</div>

<script>

$('#checkbox-1').click(function(){
  $("#div1 p span").text($('#checkbox-1').is(':checked'));
});

</script>

Using the jQuery prop() method to Check if a Checkbox is Checked

Another way we can check if a checkbox is checked with jQuery is using the jQuery prop() method.

Let’s say we have the same HTML as above:

<div id="div1">
    <p>Click the Checkbox to Update the "Checked" status of Checkbox</p>
    <label for="checkbox-set-1">Checkbox </label>
    <input type="checkbox" name="checkbox-set-1" id="checkbox-1" value="Checkbox">
    <p>The value of the checkbox is: <span id="checkbox-value"></span>.</p>
</div>

Below is the Javascript code which will allow us to see if our checkbox is checked using the prop() method.

$('#checkbox-1').click(function(){
    $("#div1 p span").text($('#checkbox-1').prop('checked'));
}); 

The final code and output for this example of how to check if a checkbox is checked using jQuery and Javascript is below:

Code Output:

Full Code:

<div id="div1">
  <p>Click the Checkbox to Update the "Checked" status of Checkbox</p>
  <label for="checkbox-set-1">Checkbox </label>
  <input type="checkbox" name="checkbox-set-1" id="checkbox-1" value="Checkbox">
  <p>The value of the checkbox is: <span id="checkbox-value"></span>.</p>
</div>

<script>

$('#checkbox-1').click(function(){
    $("#div1 p span").text($('#checkbox-1').prop('checked'));
});

</script>

Hopefully this article has been useful for you to understand how to check if a checkbox is checked using jQuery.