如何给json添加一个键值对

Question

`｛age：23，name：“你”｝` 在已有的json里，加一对？有哪些方法？

Answer 1

> var str = '{"age":23,"name":"你"}'

> var object = JSON.parse(str)

> object.newKey = 'newvalue'

'newvalue'

> object

{ age: 23, name: '你', newKey: 'newvalue' }

> JSON.stringify(object)

'{"age":23,"name":"你","newKey":"newvalue"}'