check uncheck All checkboxes with another single checkbox use jquery

Question

I use jquery-1.9.1.js In my html page, it works well for the first time.

just like http://jsfiddle.net/pzCcE/1/

Can somebody help me to improve it?

Answer 1

I've just simplified @j08691 answer

$("#checkAll").click(function() {
      var allChecked = $(this);
      $("#tab1 input[type=checkbox]").each(function() {
        $(this).prop("checked", allChecked.is(':checked'));
      })
    });

  

    

      Select all
      book1
      book2
      book3