How to resolve security error when working with html5 web worker?

Question

I'm learning about web workers from this site and following the example, but I keep getting this error. What does this mean? Both my index.html and pi.js files are saved on my desktop.

index.html:9 Uncaught SecurityError: Failed to construct 'Worker': Script at 'file:///Users/jlei/Desktop/pi.js' cannot be accessed from origin 'null'.

This was asked before several times. [Please use Google](https://www.google.cz/search?q=Script+at++cannot+be+accessed+from+origin+'null'). Particularly I recommend my answer here: http://stackoverflow.com/a/33432215/607407 — Tomáš Zato - Reinstate Monica, Jul 27 '16 at 08:44
Possible duplicate of [Chrome can't load web worker](http://stackoverflow.com/questions/21408510/chrome-cant-load-web-worker) — Tomáš Zato - Reinstate Monica, Jul 27 '16 at 08:46

score 0 · Answer 1 · answered Jul 26 '16 at 20:58

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I would bet you can't do that just locally. Though I'm not all sure.. Have you tried in LAMP or similar or even on actual webspace?

https://en.wikipedia.org/wiki/LAMP_(software_bundle)

https://sourceforge.net/projects/wampserver/

answered Jul 26 '16 at 20:58

Aurel Engle Engelmann

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i found that it just doesn't work in chrome for locally unless you change the settings. or you can just use safari or firefox – akantoword Jul 26 '16 at 20:58
You should be able to do that locally provided you use relative paths. The only exception is google chrome. – Tomáš Zato - Reinstate Monica Jul 27 '16 at 08:45

William · Answer 2 · 2022-05-29T19:22:25.320

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If your project has a tsconfig, you probably need another tsconfig for the worker thread. Here is an example for Agular. it is Angular 8, but I tried it in Agular 14 and it still works

https://www.tutorialspoint.com/angular8/angular8_web_workers.htm

edited May 29 '22 at 19:22

answered May 27 '22 at 18:14

William

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How to resolve security error when working with html5 web worker?

2 Answers2