1. function A(){
    2.     this.a = 5;
    3.   this.name = 'zz';
    4. }
    6. const o = create(A)
    8. function create() {
    9.   let obj = {}
    10.   let Con = [].shift.call(arguments)
    11.   obj.__proto__ = Con.prototype
    12.   let result = Con.apply(obj, arguments)
    13.   return result instanceof Object ? result : obj
    14. }
    16. o; // { a: 5, name: "zz" }