I am attempting to debug a page issue where IE 9 will work the first time on my requirejs/backbone application, but will fail on the page reload. However, when I attempt to debug this problem using the f12 IE developer tools, I cannot navigate to the source to set a breakpoint because IE does not load any of the files that RequireJS includes. How can I get around this issue to fix my IE headache??

I am attempting to debug a page issue where IE 9 will work the first time on my requirejs/backbone application, but will fail on the page reload. However, when I attempt to debug this problem using the f12 IE developer tools, I cannot navigate to the source to set a breakpoint because IE does not load any of the files that RequireJS includes. How can I get around this issue to fix my IE headache??

• javascript
• internet-explorer
• requirejs
• amd

• 2 Does clicking the refresh icon in the HTML tab make a difference? – epascarello Commented Feb 21, 2013 at 17:47
• It does refresh all the script tags that requirejs has written to the dom in the HTML view. However, the script tab does not reflect these new scripts (can't see them) – Matt Broekhuis Commented Feb 22, 2013 at 16:36

3 Answers 3

I guess I am late for the party but hope my answer helps you and others as well. The file that you want to debug or the line in the file, simply add this --> debugger; before that line.

So, when require.js loads your script and encounter that string i.e. debugger; exists it will automatically be stopped at that line.

You can generate a single js File with require tools :

• include requirejs in this single file (http://requirejs/docs/optimization.html#onejs)
• set optimise to none (no source minified - http://requirejs/docs/optimization.html#shallow)

In your index.html link this file instead of require.js.

You can debug with IE.

I have the same problem from time to time. What sometimes helps: Close all the files in Debugger view, leave the DevTools open, press Play to allow page to continue and then make your action on the page or reload - if it halts on the debugger; again, all the files will be loaded. But still investigating ;)