How to call external function in webgl

How do i execute external JavaScript functions from unity webgl??

 

Hi is there way to use the Process in the webGL browser?

 

@Schubkraft Your doc link above does not explain how to call a javascript function located in the index.html that loads the WebGL project. Do you have an example of this? Looking for something equivalent to Application.ExternalCall()

 

Actually I found the answer which is make a proxy function in a jslib file located in the project and then call out to the javascript function on the web page.

What i really need help with right now is this -https://forum.unity.com/threads/webgl-image-uploading.373221/