Function loadJSFile

loadJSFile(fileUrl): Promise<void>
JMap.Util.loadJSFile

Load an external JS File then resolve when file has been loaded.
Parameters
- fileUrl: string
  the JS URL to load
Returns Promise<void>
Example
```
// load your custom JS file dynamically
JMap.Util.loadJSFile("https://mysever/toLoadFile.js")
```