How to deliberately freeze javascript in chrome (plugin/console)

What worked for me to pause execution:

1. Open Chrome javascript console (Ctrl+Shift+J)
2. Go to “sources”
3. On the right side, click the little “pause” icon, or press F8 to
   pause script execution.

You can also put in “breakpoints” within the same console. Try the following to use breakpoints:

1. Open Chrome javascript console (Ctrl+Shift+J)
2. Go to “sources”
3. On the right side, click the little “pause” icon, or press F8 to
   pause script execution.
4. Now you can click the “Step over”, “Step Into”, etc functions on the right side to slowly step into the code, line by line.
5. You can also click on the line number for any of the sources to add a breakpoint. Breakpoints will stop the code execution when it is reached. You can enable/disable breakpoints on the right side next to the other buttons mentioned above.