JSON教程：从基础语法到高级应用，轻松掌握数据交换格式

{ "user": {

"name": "李四",
"preferences": {
  "theme": "dark",
  "notifications": true,
  "fontSize": 14.5
},
"recentSearches": ["编程教程", "JSON解析", "API设计"]

} }

const userData = { id: 12345, name: '王小明', lastLogin: new Date(), settings: { theme: 'dark', notifications: true } };

// 序列化时处理日期对象 const jsonString = JSON.stringify(userData, (key, value) => { if (value instanceof Date) {

return value.toISOString();

} return value; }, 2);

{ "$schema": "http://json-schema.org/draft-07/schema#", "type": "object", "required": ["username", "email", "password"], "properties": {

"username": {
  "type": "string",
  "minLength": 3,
  "maxLength": 20,
  "pattern": "^[a-zA-Z0-9_]+$"
},
"email": {
  "type": "string",
  "format": "email"
},
"password": {
  "type": "string", 
  "minLength": 8,
  "pattern": "^(?=.*[a-z])(?=.*[A-Z])(?=.*\\d).+$"
},
"age": {
  "type": "integer",
  "minimum": 0,
  "maximum": 150
}

} }

import json data = json.loads('{"name": "John", "age": 30}') json_string = json.dumps(data, indent=2)