js array 转 json

// 简单数组转换为JSON
let simpleArray = [1, 2, 3];
let simpleJson = JSON.stringify(simpleArray);
console.log(simpleJson); // 输出: "[1,2,3]"

// 对象数组转换为JSON
let objectArray = [{"name": "Alice", "age": 25}, {"name": "Bob", "age": 30}];
let objectJson = JSON.stringify(objectArray);
console.log(objectJson); // 输出: '[{"name":"Alice","age":25},{"name":"Bob","age":30}]'

const CircularJSON = require('circular-json');
let circularObj = {};
circularObj.self = circularObj;
let json = CircularJSON.stringify(circularObj);
console.log(json); // 输出: '{"self":{"self":{"self":{...}}}}'

let user = {
  name: "Alice",
  password: "secret"
};
let jsonUser = JSON.stringify(user, (key, value) => {
  if (key === "password") return undefined; // 不序列化密码字段
  return value;
});
console.log(jsonUser); // 输出: '{"name":"Alice"}'