topic Re: Maps SDK 4.33 viewOnReady is Not a Function in ArcGIS JavaScript Maps SDK Questions

Maps SDK 4.33 viewOnReady is Not a Function

JasonBartling1 — Thu, 23 Oct 2025 19:41:35 GMT

I am trying to make sure the map view is ready when using components before accessing it to zoom to a location, etc. The official way I found to do this was to use the mapView.viewOnReady method as seen in the release notes for version 4.33 here https://developers.arcgis.com/javascript/latest/4.33/ .

However, it seems like 1/10 of the time I load my web application I get the error that viewOnReady is not a function. Is there a better official/more robust way to make sure the map view element is loaded before trying to call this viewOnReady method than the below?

const viewElement = document.getElementById("map-component"); await viewElement.viewOnReady();

Re: Maps SDK 4.33 viewOnReady is Not a Function

ReneRubalcava — Thu, 23 Oct 2025 21:43:26 GMT

Is this a CDN app or npm? It's possible maybe in a CDN app that a network issue might add just enough of a delay for map-components code that defines that method to not load in time, but I hadn't seen that before.

Having components script in the head and user script as last element of the body makes sure this doesn't happen.

Re: Maps SDK 4.33 viewOnReady is Not a Function

JasonBartling1 — Thu, 23 Oct 2025 21:56:20 GMT

I'm using the CDN. I think my scripts were actually above the components in the head, so I moved them down to the body like you suggested. After doing some testing, I will comment back with whether this fixed my problem or not. Thanks for the tip!

Re: Maps SDK 4.33 viewOnReady is Not a Function

JasonBartling1 — Mon, 27 Oct 2025 21:11:14 GMT

I don't appear to be getting the error any more. Moving my scripts seemed to be the solution. Thanks!