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Home > List of blog posts > 4.2jquery的两种引入和$(document).ready()使用方式与简写
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4.2jquery的两种引入和$(document).ready()使用方式与简写
宋的博客
Original
644 people have browsed it

实例

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>jquery的两种引入</title>
</head>
<body>
	<h2>中文网</h2>
</body>
</html>
<!-- 本地引入 -->
<script type="text/javascript" src="js/jquery-3.3.1.js"></script>

<!-- 在线引入 -->
<script type="text/javascript" src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
<script type="text/javascript">
	$('h2').click(function(){
		alert('成功！')
		
	})
</script>

运行实例 »

点击 "运行实例" 按钮查看在线实例

实例

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>$(document).ready()使用方式与简写</title>
	<style type="text/css" media="screen">
		.horiz{
             float: left;
             list-style-type: none;
              padding: 10px;   
		}


	</style>

		<script type="text/javascript" src="js/jquery-3.3.1.js"></script>
		<script type="text/javascript">
			$(document).ready(function(){
			 $('#list>li').addClass('horiz')	
			})
			// ready()方法更好，只要生成了DOM结构就能执行
	// window.onload = function () {
	// $('#list > li').addClass('horiz')	
	// }
		// onload方法必须要全部执行完成后，才执行
		// 网页渲染顺序：

		//  第一步：生成DOM结构

		//  第二步：加载资源

		//  window.onload()：等到加载资源全部完成才会触发

		// $(document).ready()：只要生成DOM结构就会触发
		</script>
</head>
<body>
	<h2>列表</h2>
	<ul id="list">
		<li>项目1</li>
		<li>项目2</li>
	</ul>
</body>
</html>

运行实例 »

点击 "运行实例" 按钮查看在线实例


Correction status：Uncorrected

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