Windows: CTRL–SHIFT–J OR F12
Try adding this to your source:
It works in most, if not all browsers. Just place it somewhere in your code, and it will act like a breakpoint.
Windows and Linux:
Ctrl + Shift + I keys to open Developer Tools
Ctrl + Shift + J to open Developer Tools and bring focus to the Console.
Ctrl + Shift + C to toggle Inspect Element mode.
⌥ + ⌘ + I keys to open Developer Tools
⌥ + ⌘ + J to open Developer Tools and bring focus to the Console.
⌥ + ⌘ + C to toggle Inspect Element mode.
Ctrl + Shift + J opens Developer Tools.