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.
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).
Bubbles | Yes |
---|---|
Cancelable | Yes |
Interface | Event |
Event handler property | None |
Specifications
Not part of any specification.
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
beforescriptexecute event | Chrome No support No | Edge No support No | Firefox Full support 2 | IE ? | Opera No support No | Safari No support No | WebView Android No support No | Chrome Android No support No | Firefox Android Full support 4 | Opera Android No support No | Safari iOS No support No | Samsung Internet Android No support No |
Legend
- Full support
- Full support
- No support
- No support
- Compatibility unknown
- Compatibility unknown
- Non-standard. Expect poor cross-browser support.
- Non-standard. Expect poor cross-browser support.
See also
afterscriptexecute
event