jquery是完全支持css的,我们举个例子来看看使用jquery的方便之处,这功劳是属于选择器的:
例1:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> <script type="text/javascript" src="jquery-1.10.1.js"></script> <script type="text/javascript"> $(function() { $("li.abc").css("color","red"); }); </script> </head> <body> <div id="hello"> <ul> <li>niujiabin</li> <li class="abc">maybe</li> <li>gossipgo</li> </ul> </div> </body> </html>
我们想要做到改变maybe字体颜色为红色
$("li.abc")
利用选择器可以直接获取到,非常方便,如果利用javascript获取就很麻烦
.css("color","red");
<li>之间的文本就会变成红色
运行结果:
例2:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> <script type="text/javascript" src="jquery-1.10.1.js"></script> <script type="text/javascript"> $(function() { $("#hello ul li:even").css("background","grey").css("color","red"); }); </script> </head> <body> <div id="hello"> <ul> <li>niujiabin</li> <li class="abc">maybe</li> <li>gossipgo</li> </ul> </div> </body> </html>
$("#hello ul li:even")
选取id为hello下的ul下的li的奇数行。
.css("color","red");
改变奇数行的颜色
运行结果:
例3:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> <style type="text/css"> .bg{ background:#f00; color:#fff; } </style> <script type="text/javascript" src="jquery-1.10.1.js"></script> <script type="text/javascript"> $(function() { $("li").mouseover(setColor).mouseout(setColor); function setColor() { $(this).toggleClass("bg"); } }); </script> </head> <body> <div id="hello"> <ul> <li>niujiabin</li> <li class="abc">maybe</li> <li>gossipgo</li> </ul> </div> </body> </html>
<style type="text/css"> .bg{ background:#f00; color:#fff; } </style>
css样式,设置背景色和颜色
$("li").mouseover(setColor).mouseout(setColor);
为li添加事件
运行结果是鼠标放到哪就会显示变化,离开就会消失。