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debugger Redirect 1


Invokes any available debugging functionality. If no debugging functionality is available, this statement has no effect.

Version Information

Implemented in JavaScript 1.0
ECMAScript Edition ECMA-262 5th Edition




The following example shows code where a debugger statement has been inserted, to invoke a debugger (if one exists) when the function is called.

function potentiallyBuggyCode() {
    // do potentially buggy stuff to examine, step through, etc.

When the debugger is invoked, execution is paused at the debugger statement. It is like a breakpoint in the script source.

Paused at a debugger statement.

See also

Document Tags and Contributors

 Last updated by: Sheppy,