Debugin progress
DevTools Lab
Your browser already contains the debugger. Learn to read it.
- click an error — then decide where you would look first
CONSOLE — what it's for
Messages your code and the browser print, including every uncaught error.
Something didn't happen. Look here first — nine times out of ten the reason is already printed.
plain englishThe complaint box. Red text is the browser telling you exactly what went wrong.
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