JSONP stands for JSON with Padding.
JSONP in effect uses JSON objects, but with some additional "padding" that allows cross-domain requests, i.e. it allows requests and responses between domains with different top-level domains, such as a ".com" server talking to a ".net" server.
The URL after "src=" would return a regular JSON object, and the <script…</script> padding would allow it to be received and parsed by, say, server.example.NET.
Last Updated 05/21/2020