Js traverses objects in the form of key value pairs or methods in the form of Map

Recent use of ajax in the project returned an map object. How do you iterate through this map object? I checked a lot on the Internet, but it was really useful. Finally, it reminded me of an object that needed to traverse key=Value before. After thinking about this way, it should also be applicable to map. So I tried it and it worked! Record it for later use.

How to traverse key=value key-value pairs, object data in JS (it can also be in the form of map).

for ( var key in changes) {			
// Through the method of traversing object attributes, traversing key-value pairs, and obtaining key , and then through   Object [key] Get the corresponding value 			
name = key;			
value = changes[key];}