topic Click events on GeoJSON layer: How to access properties from click events? in ArcGIS JavaScript Maps SDK Questions

Click events on GeoJSON layer: How to access properties from click events?

KevinCheriyan — Sun, 03 May 2020 17:06:51 GMT

Hi everyone,

I have a GeoJSON layer that I have added to my webmap. I want to be able to click on the layer features and populate a sidepanel with elements based on the feature's properties (make request to db from app with Express query, populate sidepanel with returned array). How can I access the GeoJSON layer's properties for the feature that is being clicked? I looked at hitTest(), a MapView method. But surprised to see that GeoJSON is not a supported type of layer for the method.

Does anyone have any ideas on how I could achieve this? I'm able to access the properties on the popupTemplate fine. But I need more features than what the popupTemplate is giving me.

TLDR: Need to access GeoJSON properties from clicking element on map.

Thanks!

Re: Click events on GeoJSON layer: How to access properties from click events?

ReneRubalcava — Mon, 04 May 2020 15:12:50 GMT

Looks like it's just an omission in the docs. hitTest works with GeoJSONLayer.

Here is a demo.

Re: Click events on GeoJSON layer: How to access properties from click events?

KevinCheriyan — Mon, 04 May 2020 15:31:57 GMT

Thanks, Rene! Wish I'd given it a try before I switched my entire application to render Feature Layer instead.

Now I'm facing a problem where client-side graphics added to the feature layer cannot recognize click events for hitTest() or popupTemplate.

I believe this is a bug that was recognized in the API a couple of years ago, but still hasn't been fixed. See view.hitTest returning 0 results and PopupTemplate from Client Side Graphics Not Working

Re: Click events on GeoJSON layer: How to access properties from click events?

ReneRubalcava — Mon, 04 May 2020 16:00:05 GMT

I'm not sure.

This sample works with popups.

I tried with hitTest and it works.