How to check a checkbox is checked or not using jQuery

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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 and :checked selector.

Using the jQuery prop() Method

The jQuery prop() method provides an simple and reliable way to track down the status of checkboxes. It works well in all condition because every checkbox has 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 the checkbox, and not the current state.

  • <script type="text/javascript">
  •     $(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.

  • <script type="text/javascript">
  •     $(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>

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