topic get feature from objectid directly in ArcGIS JavaScript Maps SDK Questions

get feature from objectid directly

Anonymous User — Wed, 13 Dec 2023 04:04:45 GMT

Hi, I cannot figure out how to get feature in a layer or layerview from objectid directly, some function like "layerView.getFeatureById(objectid)". I store the objectids in array but I don't know how to get the features back later. Could you help me, thanks!

Re: get feature from objectid directly

Sage_Wall — Wed, 13 Dec 2023 14:23:55 GMT

Hi @Anonymous User ,

There is a method named queryFeatures() on many of the layer types where you can pass in a Query object defining a query with the object id you are looking for.

https://developers.arcgis.com/javascript/latest/api-reference/esri-rest-support-Query.html

https://developers.arcgis.com/javascript/latest/api-reference/esri-layers-FeatureLayer.html#queryFeatures

You'll first need to define a Query and then pass that query as a parameter into queryFeatures(). One thing to look out for is the casing for the ObjectID field can be different depending on the environment hosting the service. So you might want to log out the layers fields or look at the REST enpoint of the service to match the casing for ObjectID. (OBJECTID, ObjectID, etc...)

const query = new Query(); query.where = "OBJECTID = 49" layer.queryFeatures(query).then((results) => { console.log(results.features); });

Re: get feature from objectid directly

JoelBennett — Wed, 13 Dec 2023 17:24:39 GMT

Everything said here is accurate, but the nuances of the OID field name can be avoided by using query.objectIds instead of query.where.

Re: get feature from objectid directly

Anonymous User — Thu, 14 Dec 2023 02:21:30 GMT

Thank you both!

Re: get feature from objectid directly

AndyGorman — Mon, 17 Feb 2025 18:44:25 GMT

This was helpful. I'm working only with JS API with our own GeoJSON data (not using ArcGIS portal or anything). The "nuances of the OID field" have been driving me crazy.