<!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">
<title>Title</title>
<link rel="stylesheet" href="bootstrap-3.3.7-dist/css/bootstrap.min.css" rel="stylesheet">
<script>
window.onload = function () {
function Star(name,age) {
this.name = name;
this.age = age;
}
var that;
Star.prototype.sing = function () {
console.log('唱歌！');
that = this;
};
var nlbf = new Star('nlbf',26);
//1 在构造函数中，里面的this指向的是对象实例 nlbf
nlbf.sing();
console.log(that === nlbf);//true
//2 原型对象函数里面的 this 指的是 实例对象 nlbf
}
</script>
</head>
<body>
</body>
</html>
原型对象的this指向
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转载自blog.csdn.net/weixin_45949073/article/details/107427829
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