When debugging in chrome, the scripts are always paused in the debugger even if there are no break points set, and if the the pause is un-paused, it again pauses itself.
If you navigate to Sources you can see the pause
button at the bottom of the DevTools.
Basically there are 3 possible pause option in DevTools while debugging js file,
Don't pause on exceptions(
) :
The pause button will be in grey colour as if "Don't pause on exceptions" is active.

Pause on all exceptions(
) :
The pause button will be in blue colour as if "Pause on all exceptions" is active.

Pause on uncaught exceptions(
) :
The pause button will be in purple colour as if "Pause on uncaught exceptions" is active.

In your case, if you don't want to pause, select Don't pause on exceptions. To select, toggle the pause button till it become grey
.