Help Us Improve. Please let us know if you were asked any of these questions.

More Questions

PROBLEM - Javascript - Check / Uncheck All group checkboxes


Check / Uncheck all for checkboxes.

Solution Code

Name all checkboxes in a group with a single name (  checkBoxGroup ) in our case.

function checkAll(masterBox){
   var checkboxes = document.getElementsByName("checkBoxGroup");
     if (masterBox.checked) {
         for (var i = 0; i < checkboxes.length; i++) {
                  checkboxes[i].checked = true;
     } else {
         for (var i = 0; i < checkboxes.length; i++) {
                checkboxes[i].checked = false;


 Stay Updated with Java Posts directly to your mailbox.
Enter your email address:

Subscribe to Java News and Posts. Get latest updates and posts on Java from
Enter your email address:
Delivered by FeedBurner
comments powered by Disqus


Try our new Java Interview Questions Search Tool.

There are more than 1000 questions with practice tests.

It's updated daily and It's Awesome.


Try our new Java Practice Test tool.

There are more than 200 questions and expanding quickly. It's updated daily and It's Awesome.