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How to check a checkbox is checked or not using jQuery

Topic: JavaScript / jQueryPrev|Next

Answer: Use the jQuery prop() method & :checked selector

The following section describes how to track the status of checkboxes whether it is checked or not using the jQuery prop() method as well as the :checked selector.

Using the jQuery prop() Method

The jQuery prop() method provides a simple, effective, and reliable way to track down the current status of a checkbox. It works pretty well in all conditions because every checkbox has a checked property which specifies its checked or unchecked status.

Do not misunderstand it with the checked attribute. The checked attribute only define the initial state of a checkbox, and not the current state. Let's see how it works:

  • <script>
  •     $(document).ready(function(){
  •         $('input[type="checkbox"]').click(function(){
  •             if($(this).prop("checked") == true){
  •                 alert("Checkbox is checked.");
  •             }
  •             else if($(this).prop("checked") == false){
  •                 alert("Checkbox is unchecked.");
  •             }
  •         });
  •     });
  • </script>

Using the jQuery :checked Selector

You can also use the jQuery :checked selector to check the status of checkboxes. The :checked selector specifically designed for radio button and checkboxes.

Let's take a look at the following example to understand how it basically works:

  • <script>
  •     $(document).ready(function(){
  •         $('input[type="checkbox"]').click(function(){
  •             if($(this).is(":checked")){
  •                 alert("Checkbox is checked.");
  •             }
  •             else if($(this).is(":not(:checked)")){
  •                 alert("Checkbox is unchecked.");
  •             }
  •         });
  •     });
  • </script>

Related FAQ

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