Force reload

Hold down Shift and click the Reload button.
or
Open the Chrome Dev Tools (F12). Then right-click the normal chrome refresh button and a menu will dropdown.

Developer console

Chrome: CTRL + SHIFT + I

Edge: F12

View javascript console

Chrome: CTRL + SHIFT + J

Edge: CTRL + SHIFT + J

Halt Javascript

Chrome

First use CTRL + SHIFT + J to enter debugging mode and show the console output.

Method A

SHIFT + ESC then select the tab and press End Process

Method B

CRTL + SHIFT + P

Start typing Javascript, then you can disable javascript and enable javascript.