js之create()

Object.create(proto, [propertiesObject])

var a = {
        name1:‘jim‘,
        sex1:‘nan‘,
        age1:‘23‘
    }

    var o = Object.create(a,{
        name:{
            value:‘zhangsan‘,
            writable:false
        },
        age:{
            value:null,
            writable:true
        },
        fn:{
            configurable:false,
            get:function(){
                console.log(this.name);
            },
            set:function(newValue){
                this.age = newValue;
                console.log(this.name+‘ : ‘+this.age);
            }
        }
    });
    console.log(o);
    o.fn;
    o.fn = 23;
    console.log(o.name1);
    console.log(o.__proto__ === a);//true