Features within 300 feet of selected feature

Question

I see a lot of examples of queries using a circle to find features within a given distance of a center point, but I have yet to be able to find an example of a query done using a feature to find all features within a given distance.

Can someone point me in the right direction? I'm sure it's very similar to a circle but something just isn't clicking in my head.

Thank you.

RobertScheitlin__GISP · Accepted Answer

Here is a mashup of the Select with Feature Layer and Geometry Service - Buffer samples. It querys the census block layer and buffers the results and uses that buffer to query census block points that intersect the buffer. Select with feature layer Wait for FIPS = '200450004001' Query to execute...