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jquery交替变换颜色的三种方法 实例代码

时间：2021-07-19 08:01:36 | 栏目：jquery | 点击：次

复制代码 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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