64.深度使用 JSON.stringify() about cc HOT 14 OPEN

var myMap = new Map();
myMap.set(0, 'zero');

var mySet = new Set();
mySet.add(1);

class test {
  constructor(opt) {
    this.opt = opt;
  }
}

JSON.stringify({
  String: 'string',
  Boolean: true,
  Number: 123,
  NaN: NaN, // null,
  Infinity: Infinity, // null
  null: null, // null
  undefined: undefined, // 没有 key
  Array: [1, 2, 3],
  Object: {
    foo: 'bar',
  },
  Symbol: Symbol('foo'), // {}
  Map: myMap, // {}
  Set: mySet, // {}
  Promise: new Promise(function(resolve, reject) {}), // {}
  Proxy: new Proxy({}, {}), // {}
  Class: test, //  没有 key
  ClassA: new test(123), // { "opt": 123 },
  Math: Math, // {}
  // Buffer: new Buffer('123'), // nodeJs  '{"Buffer":{"type":"Buffer","data":[49,50,51]}}'
  Error: new Error('error'), // {}
  Function: function() { // 没有 key
    console.info('hi');
  },
  Date: new Date(), // "2017-08-01T13:52:48.628Z",
  RegExp: /RegExp/, // {}
}, null, 2);

/*
"{
  "String": "string",
  "Boolean": true,
  "Number": 123,
  "NaN": null,
  "Infinity": null,
  "null": null,
  "Array": [
    1,
    2,
    3
  ],
  "Object": {
    "foo": "bar"
  },
  "Map": {},
  "Set": {},
  "Promise": {},
  "Proxy": {},
  "ClassA": {
    "opt": 123
  },
  "Math": {},
  "Error": {},
  "Date": "2017-08-01T14:04:58.522Z",
  "RegExp": {}
}"
 */