jQuery Checkbox checked property

event.preventDefault() and return false

The checkbox checked property of a checkbox element gives you the checked state of the element. But you can also check using is() method.

Example of Checkbox checked:

<input type="checkbox" id="checkID"/>

Then using checked property you can check this:

if(document.getElementById('checkID').checked){
// checked
} else {
// unchecked
}

Alternatively, you can use jQuery is() function as below:

if($("#checkID").is(':checked')){
// checked
} else {
// unchecked
}

Using attr or prop method you can check the status:

$('#checkID').attr('checked'); // "checked"
$('#checkID').prop('checked'); // true

You can use bind to change event instead of. You will probably still need to check whether or not the checkbox is checked:

$("#checkID").change(function() {
if(this.checked) {
//Do stuff
}
});

Read jQuery tips and tricks for more topics.

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