35 lines
785 B
HTML
35 lines
785 B
HTML
<!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>
|
|
|
|
</body>
|
|
<script>
|
|
|
|
class Test {
|
|
constructor(name) {
|
|
this.name = name;
|
|
}
|
|
|
|
getName() {
|
|
return this.name;
|
|
}
|
|
}
|
|
|
|
var test = new Test("张三");
|
|
console.log("test: ",test);
|
|
console.log(test.getName());
|
|
|
|
// 类的 prototype 等于 对象的 __proto__
|
|
// 显式原型 = 隐式原型
|
|
// console.log(Test.prototype === test.__proto__);
|
|
|
|
// constructor 外的方法会成为实例化对象的共有方法
|
|
// 类的公有方法不会开辟新的内存，以此达到节省内存的目的
|
|
</script>
|
|
</html> |