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Use the debugger statement to pause script execution
If you prefer to use
- Where you normally add a
console.log(), add a
debugger, directly in the code
- Open DevTools on your page
- Trigger the action that will make your code run
- The Sources panel (or Debugger panel in Firefox) will automatically open up, and pause script execution at that line, giving you a chance to see what are the values of local variables, the callstack, etc.