<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>Document</title>
</head>
<body>
<script type="text/javascript" >
class Person {
constructor(name,age){
this.name = name
this.age = age
}
study(){
//study方法放在了哪裡？——類的原型對象上，供執行個體使用
//通過Person執行個體調用study時，study中的this就是Person執行個體
console.log(this);
}
}
const p1 = new Person('tom',18)
p1.study() //通過執行個體調用study方法
const x = p1.study
x()
</script>
</body>
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