<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<button id="btn">111</button>
<script>
var ob = {};
var count=12;
Object.defineProperty(ob,"name",{
get:function(){
console.log("这个人来获取值了！！");
return count;
},
set:function(va){
console.log("这个人来设置值了！！");
count = va+1;
}
});
//ob.name = "11111";
console.log(ob.name);
ob.name = "1111111111";
console.log(ob.name);
</script>
</body>
</html>