proxy.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        // const arr = ['2019','云南','珠海','昆明']
        // let ProxyArray = new Proxy(arr,{
        //     get:(target,name,property)=>{

        //         console.log('开始拦截')
        //         console.log(target)
        //         console.log(name,property)
        //      return Reflect.get(target,name,property)
        //     },
        //     set:(target,name,value)=>{
        //         console.log('触发了set方法',target,name,value)
        //         Reflect.set(target,name,value)
        //     }
        // })
        // ProxyArray[0]
        // ProxyArray[3] = '佛山'
        

        // let map = new Map([['name','祝号']])
        // let mapProxy = new Proxy(map,{
        //     get(target,name,receiver){
        //         console.log('触发了',target,name,receiver)
        //         const value = Reflect.get(...arguments)
        //         //代理对象里面的this是指向Proxy实例
        //         return typeof value == 'function' ? value.bind(target):value
        //     },
            
        // })
        // console.log(mapProxy.get('name'))
        // mapProxy.set('name','11')
        // console.log(mapProxy.get('name'))




        // let map = new Set(['age','祝号'])
        // let mapProxy = new Proxy(map,{
        //     get(target,name,receiver){
        //         console.log('触发了',target,name,receiver)
                
        //         return Reflect.get(...arguments)
        //     },
            
        // })
        // console.log(mapProxy.add(1))
        //mapProxy.set('age','11')
        //console.log(mapProxy.get('age'))


        function Super(){
	this.flag = true;
}

Super.prototype.getFlag = function() {
	return this.flag;
}

function Sub() {
	this.subFlag = false;
	Super.call(this)
}

Sub.prototype = new Super();
var obj = new Sub();
var obj2 = new Sub();
Sub.prototype.constructor = Sub;
// Super.prototype.getSubFlag = function() {
// 	return this.flag;
// }
Sub.prototype.flag = false
console.log(obj,Sub.prototype.getFlag(),obj2)


       
    </script>
</body>
</html>