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jquery交替变换颜色的三种方法 实例代码

  • 时间:2022-07-18 14:31 编辑: 来源: 阅读:
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摘要:jquery交替变换颜色的三种方法 实例代码
[u]复制代码[/u] 代码如下:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>even and odd</title> <script type="text/javascript" src="jquery-1.4.4.js"></script> <script type="text/javascript" language="javascript"> $(function(){     alert("第一种");     $("tbody tr:even").css("background-color", "red");     $("tbody tr:odd").css("background-color", "yellow");     alert("第二种");     $("tbody tr").each(function (index){                             alert(index);                                if(0 == index%2)                             {                                 $(this).css("background-color", "blue");                               }                             if(1 == index%2)                             {                                 $(this).css("background-color", "green");                               }                       });     alert("第三种");     rows = document.getElementsByTagName("tr");     var length = rows.length;     for(var i=0; i< length;i++){        alert(i);        if(0==i%2){            rows[i].style.backgroundColor="#ffff00";        }else        {            rows[i].style.backgroundColor="#0000FF";        }          } }); </script> </head> <body> <table border="1"> <tbody >     <tr> <td>aaa</td> <td>aaa</td> <td>aaa</td></tr>     <tr> <td>bbb</td> <td>bbb</td> <td>bbb</td></tr>     <tr> <td>aaa</td> <td>aaa</td> <td>aaa</td></tr>     <tr> <td>bbb</td> <td>bbb</td> <td>bbb</td></tr>     <tr> <td>aaa</td> <td>aaa</td> <td>aaa</td></tr>     <tr> <td>bbb</td> <td>bbb</td> <td>bbb</td></tr> </tbody> </table> </body> </html>
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