arcgis javascript is it possible to select by location ?

[Edwin_KohKah_Hao]

i am selecting from different layer where 1st layer is 200 distance near from the 2nd layer.

[Elizabeth_R_Jarvie]

I have used a query Task:

Query | API Reference | ArcGIS API for JavaScript

query.spatialRelationship = Query.SPATIAL_REL_INTERSECTS;

query.geometry = 'geometry for query';

query.distance = 200 (this applied a buffer to the input geometry for the query.

[ChrisSmith7]

You can also try client-side geoprocessing:

esri/geometry/geometryEngineAsync | API Reference | ArcGIS API for JavaScript