jquerylearn/append.html at master · caesarjuly/jquerylearn · GitHub

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<!DOCTYPE HTML>
<html lang="en">
<head>

	<meta charset="UTF-8">
	<title>Appending Content</title>
	<style type="text/css">
	article{
		width: 600px;
		margin:auto;
	}
	blockquote.co{
		float: right;
		background: #e3e3e3;
		font-size:2em;
		width: 25%;
	}
	</style>
</head>
<body>
	<article>
	<h1>My Awesome Post</h1>
	<p>
		Paragraph one!
		Paragraph one!
		Paragraph one!
		Paragraph one!
		Paragraph one!
	</p>
	<p>
		Paragraph one!
		Paragraph one!
		Paragraph one!
		Paragraph one!
		Paragraph one!
	<p>
		<span class="co">Paragraph</span> two!
	</p>
	<p>
		<span class="co">Hello 2</span>Paragraph one!
		Paragraph one!
		Paragraph one!
		Paragraph one!
		Paragraph one!
	</p>
	</article>
	<script src="jquery.js" type="text/javascript"></script>
	<script>

	(function(){
		//$('p').first().after('Hello from the Javascript');   第一个p元素后面添加这段话
		/*$('<h2></h2>', {										将h2标签添加在第二个p元素之前
			text: 'Hello from Javascript',						设置h2的内容和类
			class: 'myClass'
		}).insertBefore('p:nth-child(3)');
		*/
		/*$('p').first().after(function(){						第一个p元素后添加函数的返回值当前p元素的前一个元素
			return $(this).prev();
		});*/

		$('span.co').each(function(){							//为每个span.co执行函数将blockquote标签添加到当前span标签的最近一个p元素前
			var $this = $(this);
			$('<blockquote></blockquote>', {
				class: 'co',
				text: $this.text()
			}).prependTo($this.closest('p'));
		});
	})();

	</script>
</body>
</html>