Using Google Chrome to debug and edit javascript embedded in HTML page

Chrome developer tools allows you to edit javascript in the browser if the javascript is in a .js file. However, it does not seem to allow me to edit javascript that is embedded in an HTML page. ie:

<script type="text/javascript> 
// code here that I want to debug/edit
</script> 

This is a big problem for me as I have quite a bit of embedded javascript in a certain page.

Similar to this question: Edit JavaScript blocks of web page... live but this is about firefox, not chrome.

How can I edit javascript embedded in an HTML page using Google Chrome Developer Tools?

Solution 1:

Actually chrome allows to do that, choose HTML files in Sources tab in Developer tools window. You will see HTML instead of javascript and simply add breakpoints in the <script> tags. Also you can add debugger; command to script what you want to debug. For example:

<script>
 // some code
 debugger; // This is your breakpoint
 // other code you will able to debugg
</script>

Don't forget to remove debugger;'s when you want to release your website.

Solution 2:

I had a difficult time locating the file that had my inline/embedded javascript. For others having the same problem, this may or may not be helpful...

Using Chrome 21.0.1180.89 m for Windows

All files are shown after clicking that very discreetly placed button. See:

Now you may begin debugging...

Solution 3:

None of these answers have worked for me.

What works for me is if I have my javascript on the page already loaded, I can copy that javascript, edit it, then paste it in the console and it will redefine any functions or whatever that I need to be redefined.

for instance, if the page has:

<script>
var foo = function() { console.log("Hi"); }
</script>

I can take the content between the script, edit it, then enter it into the debugger like:

foo = function() { console.log("DO SOMETHING DIFFERENT"); }

and it will work for me.

Or if you have like,

function foo() {
    doAThing();
}

You can just enter

function foo() {
    doSomethingElse();
}

and foo will be redefined.

Probably not the best workaround, but it works.