Jquery - if href attr == ""

Question

I am trying to find out if href attr is empty to do something, my code is as follows:

jQuery('#sidebar a').click(function() { var bob = jQuery(this).attr("href"); if(jQuery(bob).attr() == "") { alert('I am empty href value'); } });

I'm not sure where I am wrong? Any advice? Thanks!

+4

Phil Jul 01 '11 at 10:18

6 answers

Tj crowder · Answer 1 · 2011-07-01T10:20:11+0000

You pass bob to jQuery as a selector. Just check it out directly:

 jQuery('#sidebar a').click(function() { var bob = jQuery(this).attr("href"); if (bob == "") { alert('I am empty href value'); } });

Or better yet, simply:

  if (!bob) {

bingjie2680 · Answer 2 · 2011-07-01T10:21:39+0000

use this instead

 jQuery('#sidebar a').click(function() { var bob = jQuery(this).attr("href"); if(bob === "") { alert('I am empty href value'); } });

MAK Ripon · Answer 3 · 2011-07-01T10:29:59+0000

The answer is already given by the great guys.

just check if (bob == "")

I would add another line. Just for security, you can crop bob with jQuery.

 bob = jQuery.trim(bob);

This will make the action stronger.

Nishchay sharma · Answer 4 · 2011-07-01T10:22:20+0000

 jQuery('#sidebar a').click(function() { if(jQuery(this).attr("href")==""){ alert('I am empty href value'); } });

No need to filter your bob again using jQuery. :)

Michael irigoyen · Answer 5 · 2011-07-01T10:23:03+0000

You set a variable and then do not check it. Personally, I would not even create a variable; Just check.

 jQuery('#sidebar a').click(function() { if(jQuery(this).attr("href") == "") { alert('I am empty href value'); } });

Niklas · Answer 6 · 2011-07-01T10:21:17+0000

You have already defined the href attribute for the bob variable. Just use:

 bob == ""