We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

How do I view and debug code in dynamically-loaded scripts?

  • 1 reply
  • 2 have this problem
  • 1 view
  • Last reply by qschnehage

qschnehage
qschnehage
more options

I have a project in which HTML and JavaScript snippets are loaded via JQuery. These contain code which is then executed.

In Firefox and Firefox Developer Edition, how may I set breakpoints and debug this code?

I'm able to view this code by using the links provided when logging something to the console, but this only allows me to view the code. Any breakpoints I set are not valid when the script is run again.

I have a project in which HTML and JavaScript snippets are loaded via JQuery. These contain code which is then executed. In Firefox and Firefox Developer Edition, how may I set breakpoints and debug this code? I'm able to view this code by using the links provided when logging something to the console, but this only allows me to view the code. Any breakpoints I set are not valid when the script is run again.

All Replies (1)

qschnehage
qschnehage Question owner
more options

Essentially, I'm looking for something that would allow me to do what Chrome does here:

http://stackoverflow.com/questions/1705952/is-possible-to-debug-dynamic-loading-javascript-by-some-debugger-like-webkit-fi https://developer.chrome.com/devtools/docs/javascript-debugging#breakpoints-dynamic-javascript

Adding a line of code "//# sourceURL=buildmodal-checkout-include.js" allows one to click through to the source in the debugger and set breakpoints.

If Firefox has a similar feature or way of doing this, Firefox will be the only browser I need for development work. (Aside from cross-browser stuff, of course) :)