<!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>Object.defineProperty()</title>
</head>
<body>
<script>
// 三个参数（属性所在的对象，你要操作的属性，被操作的属性的特性）
var geyao = {
sex: "男",
age: 18,
};
console.log(geyao,"geyao1")
Object.defineProperty(geyao, "sex", {
get: function () {
console.log("读取时,get被触发");
return this.sex
},
set: function (value) {
console.log(value,"value");
this.sex=value
},
});
console.log(geyao.sex,"geyao2")
</script>
</body>
</html>