Edit javascript code in Firefox

javascript firefox firefox-developer-tools
Aditya Pal picture Aditya Pal · Jul 23, 2016 · Viewed 12.4k times · Source

I know that editing Javascript code in Chrome Developer Tools is possible - but I have not found a similar option in Firefox. Is there any way to edit the Javascript on a page in Firefox?

Answer

Charlie picture Charlie · Jul 23, 2016

You can only modify your variables, inject more code, change DOM etc at runtime using console.

Firefox, by version 45, doesn't offer a way for the developers to modify the source files in the debugger and persist changes to the disk like Chrome does.

Related questions

How to prevent Firefox DevTools from showing "Source Map not found" errors?

I am using a couple of 3rd party minified Javascript files that have no .map file. When I am debugging in Firefox DevTools, it consistently shows these errors: Source map error: request failed with status 404 Resource URL: https://foo.domain.…

Read More
How to identify who initiated the http request in Firefox?

I am developing a new Firefox addon that intercept all Firefox's network traffic (http(s) requests with http-on-modify-request) With my current code, I am able to separate requests coming from web-pages/tabs and all the other components (RSS feed updates, …

Read More
Firefox - Disable 'debugger' keywords

How do I tell Firefox not to stop if it sees a debugger keyword? I need to avoid a continuous debugger loop in case the website uses debugging protection generating debugger statements on the fly using timers. Here is an …

Read More