How do I access the $scope variable in browser’s console using AngularJS?

Pick an element in the HTML panel of the developer tools and type this in the console: angular.element($0).scope() In WebKit and Firefox, $0 is a reference to the selected DOM node in the elements tab, so by doing this you get the selected DOM node scope printed out in the console. You can also target … Read more

How does Facebook disable the browser’s integrated Developer Tools?

I’m a security engineer at Facebook and this is my fault. We’re testing this for some users to see if it can slow down some attacks where users are tricked into pasting (malicious) JavaScript code into the browser console. Just to be clear: trying to block hackers client-side is a bad idea in general; this … Read more

Why does Chrome debugger think closed local variable is undefined?

I’ve found a v8 issue report which is precisely about what you’re asking. Now, To summarize what is said in that issue report… v8 can store the variables that are local to a function on the stack or in a “context” object which lives on the heap. It will allocate local variables on the stack … Read more

Accessing console and devtools of extension’s background.js

You’re looking at the wrong place. These console messages do not appear in the web page, but in the invisible background page (ManifestV2) or service worker (ManifestV3). To view the correct console open devtools for the background script’s context: Visit chrome://extensions/ or right-click the extension icon and select “Manage extensions”. Enable developer mode Click on … Read more

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