jquery怎么替换类样式

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我是靠谱客的博主寒冷绿草，这篇文章主要介绍jquery怎么替换类样式，现在分享给大家，希望可以做个参考。

本教程操作环境：windows7系统、jquery1.10.2版本、Dell G3电脑。

jquery替换类样式

方法1：使用removeClass()和addClass()方法

使用removeClass()方法移除旧的类样式，使用addClass()方法添加新的类样式

复制代码<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<script src="js/jquery-1.10.2.min.js"></script>
		<script>
			$(document).ready(function(){
			  $("button").click(function(){
				$("p").removeClass("old-class").addClass("new-class") ;
			  });
			});
		</script>
		<style type="text/css">
			.old-class{
				border: 1px solid red; 
				background-color: #FFC0CB;
			}
			.new-class{
				border: 2px solid green; 
				background-color: #55aa7f;
				color: white;
			}
		</style>
	</head>
	<body>
		<p class="old-class">hello，测试文字</p>
		<button>替换类样式</button>
	</body>
</html>1
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<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<script src="js/jquery-1.10.2.min.js"></script>
		<script>
			$(document).ready(function(){
			  $("button").click(function(){
				$("p").removeClass("old-class").addClass("new-class") ;
			  });
			});
		</script>
		<style type="text/css">
			.old-class{
				border: 1px solid red; 
				background-color: #FFC0CB;
			}
			.new-class{
				border: 2px solid green; 
				background-color: #55aa7f;
				color: white;
			}
		</style>
	</head>
	<body>
		<p class="old-class">hello，测试文字</p>
		<button>替换类样式</button>
	</body>
</html>
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方法2：使用attr()

使用attr()方法修改class属性，直接替换为新的class类

复制代码<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<script src="js/jquery-1.10.2.min.js"></script>
		<script>
			$(document).ready(function(){
			  $("button").click(function(){
				$("p").attr("class","new-class");
			  });
			});
		</script>
		<style type="text/css">
			.old-class{
				border: 1px solid red; 
				background-color: #FFC0CB;
			}
			.new-class{
				border: 2px solid green; 
				background-color: #55aa7f;
				color: white;
			}
		</style>
	</head>
	<body>
		<p class="old-class">hello，测试文字</p>
		<button>替换类样式</button>
	</body>
</html>1
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<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<script src="js/jquery-1.10.2.min.js"></script>
		<script>
			$(document).ready(function(){
			  $("button").click(function(){
				$("p").attr("class","new-class");
			  });
			});
		</script>
		<style type="text/css">
			.old-class{
				border: 1px solid red; 
				background-color: #FFC0CB;
			}
			.new-class{
				border: 2px solid green; 
				background-color: #55aa7f;
				color: white;
			}
		</style>
	</head>
	<body>
		<p class="old-class">hello，测试文字</p>
		<button>替换类样式</button>
	</body>
</html>
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