Element: beforescriptexecute event

Non-standard: This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

Warning: This event was a proposal in an early version of the specification. Do not rely on it.

The beforescriptexecute event is fired when a script is about to be executed. Cancelling the event prevents the script from executing.

It is a proprietary event specific to Gecko (Firefox).

Syntax

Use the event name in methods like addEventListener(), or set an event handler property.

js
addEventListener("NameOfTheEvent", (event) => {});

onNameOfTheEvent = (event) => {};

Event type

A generic Event.

Specifications

Not part of any specification.

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Opera Safari Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet WebView Android
beforescriptexecute_event No No 2 No No No 4 No No No No

See also

© 2005–2023 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/Element/beforescriptexecute_event