jQuery Ajax JavaScript Execution

Question

I have jQuery ajax requesting a page that returns html with <script> tags inside that html, I have the dataType option set to "html" so that I get the JS inside the <script> tags executed, this works fine but the problem that it takes the browser from 2-3 seconds to evaluate the returned JS after the ajax response, why is the delay? it causes JS errors for users in hurry who try to click buttons immediately after the ajax response.

Please help.

Thanks.

Is the javascript in your HTML directly included in a SCRIPT element, or does it use SCRIPT SRC=""? — BarelyFitz
– BarelyFitz, Commented Jun 1, 2009 at 20:00
The retuend HTML contains both, ah, that could be the problem then, jQuery ajax waits for <script src> to load then executes the JS in the <script>, right? — Ahmad
– Ahmad, Commented Jun 1, 2009 at 20:26

Steve Goodman · Accepted Answer · 2009-06-01 20:28:39Z

1

Without seeing the code, its impossible to say what is causing the execution delay. However, you can profile the returned JS code yourself using Firebug's profiler.

console.profile("Returned JS");
//your AJAX call
console.profileEnd();

This will output an execution profile to Firebug's console, and you'll be able to see where the execution bottleneck is occurring.

http://getfirebug.com/console.html

answered Jun 1, 2009 at 20:28

Steve Goodman

1,19610 silver badges22 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

BarelyFitz · Accepted Answer · 2009-06-01 20:59:41Z

0

When you add HTML to an element using jQuery, first jQuery searches for any SCRIPT elements in the HTML. If the HTML contains SCRIPT SRC="", then jquery attempts to asynchronously fetch the javascript file. This could be causing your delay.

answered Jun 1, 2009 at 20:59

BarelyFitz

1,97713 silver badges17 bronze badges

Collectives™ on Stack Overflow

jQuery Ajax JavaScript Execution

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related