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DOM:window.onerror

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« Gecko DOM Reference

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[edit] Summary

An event handler for error events sent to the window.

[edit] Syntax 

window.onerror = funcRef;

[edit] Parameters

  • funcRef is a reference to a function. When the function returns true, this prevents the firing of the default event handler. Function parameters:
    • Error message (string)
    • Url where error was raised (string)
    • Error code (number)

[edit] Example 

window.onerror = null;

[edit] Notes

The error event is raised when an error occurs in the script. The example above prevents error dialogs from displaying-which is the window's normal behavior-by overriding the default event handler for error events that go to the window.

When using the inline html markup (<body onerror="alert('an error occurred')>...), the arguments are not named. They can be referenced by arguments[0] through arguments[2].

[edit] Specification

Not part of specification.

Retrieved from "http://developer.mozilla.org/en/docs/DOM:window.onerror"