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I'm trying to debug quite a complicated module in my angular app. I've set a break point at the start of a particular method hoping I could follow it through and see where it's giving me back an error. However, it keeps bringing me into the VM scripts (VM28337, VM30559, etc). I can assume these all work as they should, so I have no interest in seeing them.
I know I can blackbox certain scripts in chrome debugger, but there seems to be an endless amount of these VM scripts. Does anyone have any suggestions on how to circumvent these scripts?
629
Script blackboxing is the ability to mark a <script> in Web Inspector so that it is ignored by the JavaScript debugger, meaning that any JavaScript execution pauses that would happen in that <script> are instead deferred until JavaScript execution has continued outside of that <script> .
Open any web site. Open developer tools in chrome by pressing F12 /Ctrl + Shift + I/ right-click anywhere inside the web page and select Inspect/Inspect Element which will be mostly the last option. Go to Sources tab in developer tools and open any minified JS which you want to debug as shown in the image.
If you want to debug it, you should press F12 on Chrome to open the developer mode. You can see that the JS code of the current page is under the Source menu, you can set a breakpoint directly at the beginning of the script. Then you can click on the UI button or menu to start debugging(both js and backend activity ).
This doesn't appear to be possible in any version of Chrome at the moment. However, I create a Chromium bug to request it get added: Chromium Issue 526239
85
A development-time-only workaround can be to override eval in your page -
(function ()
{
var originalEval = eval;
eval =
function (script)
{
return originalEval(script + "\n//# sourceURL=blackbox-this.js");
}
}());
And then blackbox ^.*blackbox-this.js$
Same for setInterval/setTimeout when it gets a string (but that is a bad practice anyway, right? ;))
Does that work for you?
2
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