How to terminate script execution when debugging in Google Chrome?

Question

When stepping through JavaScript code in Google Chrome debugger, how do I terminate script execution if I do not want to continue? The only way I found is closing the browse

Answer 1

As of April 2018, you can stop infinite loops in Chrome:

1. Open the Sources panel in Developer Tools (Ctrl+Shift+I**).
2. Click the Pause button to Pause script execution.

Also note the shortcut keys: F8 and Ctrl+\

Answer 2

Refering to the answer given by @scottndecker to the following question, chrome now provides a 'disable JavaScript' option under Developer Tools:

• Vertical ... in upper right
• Settings
• And under 'Preferences' go to the 'Debugger' section at the very bottom and select 'Disable JavaScript'

Good thing is you can stop and rerun again just by checking/unchecking it.

Answer 3

If you have a rogue loop, pause the code in Google Chrome debugger (the small "||" button while in Sources tab).

Switch back to Chrome itself, open "Task Manager" (Shift+ESC), select your tab, click the "End Process" button.

You will get the Aww Snap message and then you can reload (F5).

As others have noted, reloading the page at the point of pausing is the same as restarting the rogue loop and can cause nasty lockups if the debugger also then locks (in some cases leading to restarting chrome or even the PC). The debugger needs a "Stop" button. Nb: The accepted answer is out of date in that some aspects of it are now apparently wrong. If you vote me down, pls explain :).

Answer 4

There are many appropiate solution to this problem as mentioned above in this post, but i have found a small hack that can be inserrted in the script or pasted in the Chromes console (debugger) to achieve it:

jQuery(window).keydown(function(e) { if (e.keyCode == 123) debugger; });

This will cause execution to be paused when you hit F12.

Answer 5

You can pause on any XHR pattern which I find very useful during debugging these kind of scenarios.

For example I have given breakpoint on an URL pattern containing "/"