原视频
html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>动态 import </title>
</head>
<body>
<button id="btn">点击</button>
<script src="./js/app.js" type="module"></script>
</body>
</html>
app.js
// import * as m1 from "./hello.js";
//获取元素
const btn = document.getElementById('btn');
btn.onclick = function(){
import('./hello.js').then(module => {
module.hello();
});
}
hello.js
export function hello(){
alert('Hello');
}
