JSON is just a text serialization of javascript object literals. They can contain only data, however (key:value pairs; not functions). Observe:
// javascript object literal
{ key1: ‘some value’ , key2: true }
// JSON representation of above
“{ “key1″:”some value” , “key2″:”true” }”
If you know JS, JSON will be trivial to pick up. In native JS implementations, keys and booleans/numbers don’t need to be quoted; but if you’re transporting back-and-forth with other languages (which is what JSON is designed for), it’s a good habit.
When an employer asks for “experience with JSON,” they probably use it as an exchange format. It’s likely that what they really want is someone who can figure out what information is needed for given tasks, and design efficient data structures to pass the info back and forth to each end of the application.
