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编码猿
2024-09-27 02:06:13 +08:00
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<!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>事件</title>
</head>
<body>
<button>点我</button>
</body>
<script>
// object
// 虚拟dom 真实dom 影子dom
// 事件
// 三要素:事件源 事件类型 事件处理函数
// let button = document.querySelector("button")
// button.onclick = function (e) {
// console.log(e);
// }
// button.addEventListener('click', function() {
// alert(1)
// })
// button.addEventListener('click', function() {
// alert(2)
// })
// button.addEventListener('click', function() {
// alert(3)
// })
</script>
</html>