jQuery and chexkbox

Whenever I need to use jquery with checkbox different functionality I always search for different sites to get my answer so I decided to write a small article to keep all the jquery functionality with checkbox at a single place, so trying to keep everything here.

To get a checkbox on a page use

  1. $(':checkbox')
  2. $('[type=checkbox]')
  3. $('*:checkbox')
  4. $('input:checkbox')

For better performance in modern browsers [type="checkbox"]

To Check and Un-Check by using class name and Id

jQuery 1.6+

$('.classname').prop('checked', true);
$('.classname').prop('checked', false);

$('#checkboxid').prop('checked', true);
$('#checkboxid').prop('checked', false); 

jQuery 1.5 and below

$('.classname').attr('checked', 'checked');

$('#checkboxid').attr('checked', 'checked');

Check the checkbox is Checked or Un-Checked


Checkbox Click

$('#checkboxid').click(function() {
    if ($(this).is(':checked')) 
       alert('Not Checked');  

If you are using Update panel then after asynchronous postback it will not work, so to fix it use live like this

$('#checkboxid').live("click", function() {
    if ($(this).is(':checked')) 
       alert('Not Checked');  

Total checked checkbox on page

 var TotalChecked = $("input:checked").length;

Let me know if I am missing anything here.

Ali Adravi Having 13+ years of experience in Microsoft Technologies (C#, ASP.Net, MVC and SQL Server). Worked with Metaoption LLC, for more than 9 years and still with the same company. Always ready to learn new technologies and tricks.
  • jquery
By Ali Adravi On 16 Nov, 12  Viewed: 914

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