y002-创建对象的三种方式

let obj = {
  name:'qdleader'
}

let obj1 = new Object({
  name:'qdleader'
})

let M = function(name) {
  this.name = name
}
let obj3 = new M('o3')

let p ={name:'qdleader'}

let obj4 = Object.create(p)