This video shows an example of how to filter data in Leaflet using HTML radio buttons to make a selection. This is analagous to using a definition query in ArcGIS or a filter feature in QGIS. We are limiting which data is included in a feature group based on its attributes.
This video is the 50th lecture in a course that will be available on Udemy on June 15th 2017 so if you find yourself a little lost, please understand that everything needed to understand this material is presented earlier in this course.
Information on that course is provided at the end of the video.