The importScripts()
method of the WorkerGlobalScope
interface synchronously imports one or more scripts into the worker's scope.
Syntax
self.importScripts('foo.js'); self.importScripts('foo.js', 'bar.js', ...);
Parameters
A comma-separated list of DOMString
objects representing the scripts to be imported. These paths are relative to html document base URL.
Return value
None.
Exceptions
NetworkError
- Imported scripts were not served with a valid JavaScript MIME type (i.e.
text/javascript
).
Example
If you had some functionality written in a separate script called foo.js
that you wanted to use inside worker.js, you could import it using the following line:
importScripts('foo.js');
importScripts()
and self.importScripts()
are effectively equivalent — both represent importScripts()
being called from inside the worker's inner scope.
Specifications
Specification | Status | Comment |
---|---|---|
HTML Living Standard The definition of 'importScripts()' in that specification. |
Living Standard |
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 | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
importScripts | Chrome Full support 4 | Edge Full support 12 | Firefox Full support 4 | IE Full support 10 | Opera Full support 10.6 | Safari Full support 4 | WebView Android Full support ≤37 | Chrome Android Full support 18 | Firefox Android Full support 4 | Opera Android Full support 11 | Safari iOS Full support 3.2 | Samsung Internet Android Full support 1.0 |
Strict MIME type checks for importScripts() | Chrome Full support 71 | Edge Full support ≤79 | Firefox Full support 67 | IE ? | Opera Full support 58 | Safari No support No | WebView Android Full support 71 | Chrome Android Full support 71 | Firefox Android Full support 67 | Opera Android Full support 50 | Safari iOS No support No | Samsung Internet Android Full support 10.0 |
Legend
- Full support
- Full support
- No support
- No support
- Compatibility unknown
- Compatibility unknown