<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>proxy</title>
</head>

<body>
    <h1>使用Proxy 和 Reflect 实现双向数据绑定</h1>
    <input type="text" id="input">
    <h2>您输入的内容是: <i id="txt"></i></h2>

    <script>
        let input = document.querySelector('#input')
        let text = document.querySelector('#txt')
        //Proxy相当于拦截器,对于对象设置进行拦截
        let newProxy = new Proxy({},{
            //对获取对象属性进行拦截
            get:(target,key,recevier)=>{
                return Reflect.get(target,key,recevier)
            },
            //对设置对象属性进行拦截
            set:(target,key,value,receiver)=>{
                if(key == 'text') text.innerHTML = value    //实现双向数据绑定
                return Reflect.set(target,key,value,receiver)
            }
        })
        //监听输入事件,并绑定到对象中  //e.target是获取目标dom          
                input.addEventListener('keyup',(e)=>{
            newProxy.text = e.target.value
        })


    </script>
</body>

</html>