angular.js - How to get the two characters "B" and "D" in angular js in json{B:["Beijing", "Baoding", "Baotou"], D:["Dalian", "Dandong"]}

Question

In

json {B:["北京"，“保定”，"包头"]，D:["大连"，“丹东”]}, how to get the two characters "B" and "D" in angular js

Answer 1

It has nothing to do with angular

Object.keys(json)

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