Loading Arcgis 3.25 and 4.8 at the same time

[juanDavid]

Hello, actually I have a very big app using 4.8 but now I need some functionality from 3.25 and I'm trying to load both at the same time but failed.

Here's a Sample of what I'm trying to do.

Arcgis problem 

I extracted the code from this video:

How to void your ArcGIS API for JavaScript Warranty! - YouTube 

[ReneRubalcava]

You need to set up your dojoConfig like in the video, before the CDN script tag. You have it after the CDN script tag, so it doesn't get picked up.

  <script>
    window.dojoConfig = {
      async: true,
      packages: [
        {
          name: "esri4",
          location: "https://js.arcgis.com/4.8/esri"
        }
      ],
      has: {
          "dojo-preload-i18n-Api": false
      }
    }
  </script>
  <script src="https://js.arcgis.com/3.25/"></script>‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

This way you can reference 3x and 4x correctly.

Here is the demo from the video.

JS Bin - Collaborative JavaScript Debugging 

There are limitations, but you can do some stuff.

[juanDavid]

The sample is actually not working.

[ReneRubalcava]

I just loaded it, seems to be working ok. I have a 3x map on top and a 4x 3d map on the bottom.

[RobertScheitlin__GISP]

Works for me too.

[RoelGarcia]

This solution does not work with API  > 4.6.

I like to find a solution to use 3.21 / 3.28 and 4.11 in the same application... please share information if you know a solution.