[jQuery] Re: check/uncheck all checkboxes with specific id

[Cesar Sanz]

Hi,

Charlie solution is very elegant

$("input[id^='chkEvent']").attr("checked","checked");

But I agree that you must use a class in your markup, so it it's the easier way

regards
  ----- Original Message ----- 
  From: Charlie 
  To: jquery-en@googlegroups.com 
  Sent: Tuesday, June 30, 2009 1:34 PM
  Subject: [jQuery] Re: check/uncheck all checkboxes with specific id


  definitely defer to experience. Question, have seen you mention attr() is 
broken,don't use it. I try to learn and absorb as much as possible from here

  Is it the performance of attr() or reliablity problem?

  Matt Kruse wrote: 
On Jun 30, 12:24 pm, "evanbu...@gmail.com" <evanbu...@gmail.com>
wrote:
                  $(':checkbox.chkEvent').each(function() {
                    var el = $(this);
                    el.attr('checked', el.is(':checked') ? '' :
'checked');
                  })
    
Avoid attr(), and try to avoid fitting every problem into a jQuery
solution...

Try this simple code:

$(':checkbox.chkEvent').each(function() {
  this.checked = !this.checked;
}

I also keep my "run" plugin handy for simple things like this:

// A General "run" function to simplify coding
$.fn.run = function(fn) {
        if (typeof fn=='string') { fn = new Function(fn); }
        this.each(fn);
}

Then:

$(':checkbox.chkEvent').run("this.checked = !this.checked");

Whether that's actually more efficient to write depends on the
situation ;)

Matt Kruse