WorkerGlobalScope: importScripts() method

pathN

A string value representing the URL of the script to be imported. The URL may be absolute or relative. If the URL is relative, it is relative to the worker entry script's URL.

None (undefined).

NetworkError

Imported scripts were served without a text/javascript MIME type or without one of the permitted legacy JavaScript MIME types.

TypeError

Thrown if the current WorkerGlobalScope is a module. Use import instead.

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");

foo.js should be in the same URL subtree as the worker's entry point — for example, if this worker was created with new Worker("worker.js"), then worker.js is the entry point. If worker.js is at https://example.com/scripts/worker.js, then foo.js should be at https://example.com/scripts/foo.js.

importScripts() and self.importScripts() are effectively equivalent — both represent importScripts() being called from inside the worker's inner scope.

• WorkerGlobalScope