参考：http://*.com/questions/7356694/how-to-json-stringify-a-user-defined-class-in-javascript
function MyClass() {
this.a = "1a";
this.b = "1b";
this.c = 100;
this.d = {
da : "1da",
dc : 200
};
}
MyClass.prototype.isManual = function() {
return true;
}
var myClass = new MyClass();
var json = JSON.stringify(myClass);
console.log(json)
console.log(myClass.isManual())
var json = JSON.stringify({"myClass": myClass, "haha": 1});
console.log(json)
结果为：
{"a":"1a","b":"1b","c":100,"d":{"da":"1da","dc":200}}
true
{"myClass":{"a":"1a","b":"1b","c":100,"d":{"da":"1da","dc":200}},"haha":1}