php - 如何在javascript中读取json？

Question

你能告诉我如何在javascript中读取json吗？

我有一个如下所示的 json 字符串

 {"person":{"First name":"Dharmalingm","Last name":"Arumugam","Address":{"door number":"123","street":"sample street","city":"sample_city"},"phone number":{"mobile":"0123","landline":"01234","skype":"01235"}}}

我想读取Skype电话号码

Answer 1

如果您从 JSON 字符串开始，请从 1 开始。如果您已有 JS 对象，请跳到 2。

1. 使用 JSON.parse() 解析字符串将 JSON 字符串转换为 JS 对象。支持a browser that does not have the native JSON ，您可以使用Crockford's JSON2 library来实现它。

   var jsondata = JSON.parse('{"person":{"First name":"Dharmalingm","Last name":"Arumugam","Address":{"door number":"123","street":"sample street","city":"sample_city"},"phone number":{"mobile":"0123","landline":"01234","skype":"01235"}}}');
   

2. 像平常一样从 JS 对象中检索值

   var skype = jsondata.person['phone number'].skype;
   

这是完整的代码和 a sample :

var jsondata = JSON.parse('{"person":{"First name":"Dharmalingm","Last name":"Arumugam","Address":{"door number":"123","street":"sample street","city":"sample_city"},"phone number":{"mobile":"0123","landline":"01234","skype":"01235"}}}');

//normally, the dot-notation is used
//but since "phone number" is not a valid key when using dot-notation
//the bracket notation is used
var skype = jsondata.person['phone number'].skype;