Object.create()

 

// 不能写为Object.create(Object.prototype, {foo:hello})
var obj = Object.create(Object.prototype, {
    // foo会成为所创建对象的数据属性
    foo: {
        writable: true,
        configurable: true,
        value: "hello",
        enumerable:true
    },
    // bar会成为所创建对象的访问器属性
    bar: {
        configurable: false,
        get: function() {
            return 10
        },
        set: function(value) {
            console.log("Setting `o.bar` to", value);
        },
        enumerable:true
    }
});
console.dir(obj)
console.log(Object.values(obj))
console.log(obj.toLocaleString())
console.log(Object.prototype.toLocaleString(obj))