jQuery :even用法及代码示例

jQuery：even选择器用于从元素中选择偶数索引。索引的数量从0开始。工作方式与：odd选择器相同，但对于偶数。

句法

$(":even")

示例1：

<!DOCTYPE html> 
<html> 
  
<head> 
    <script src= 
"https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"> 
  </script> 
      
  <script> 
        $(document).ready(function() { 
            $("tr:even").css("background-color",  
                            "green"); 
        }); 
    </script> 
</head> 
  
<body> 
  
    <center> 
        <h1>GeeksForGeeks</h1> 
  
        <table border="1"> 
            <tr> 
                <th>Company</th> 
                <th>Country</th> 
            </tr> 
            <tr> 
                <td>reliance</td> 
                <td>India</td> 
            </tr> 
            <tr> 
                <td>flipkart</td> 
                <td>India</td> 
            </tr> 
            <tr> 
                <td>walmart</td> 
                <td>American</td> 
            </tr> 
            <tr> 
                <td>Ernst Handel</td> 
                <td>Austria</td> 
            </tr> 
            <tr> 
                <td>Island Trading</td> 
                <td>UK</td> 
            </tr> 
        </table> 
    </center> 
  
</body> 
  
</html>

输出：

示例2：

<!DOCTYPE html> 
<html> 
  
<head> 
    <script src= 
"https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"> 
  </script> 
     
  <script> 
    $(document).ready(function() { 
       $("tr:even").css("background-color", 
                    "lightgreen"); 
        }); 
    </script> 
</head> 
  
<body> 
  
    <center> 
        <h1>Welcome To GeeksForGeeks 
      </h1> 
  
        <table border="2"> 
            <tr> 
                <th>State</th> 
                <th>Capital</th> 
            </tr> 
            <tr> 
                <td>uttar pradesh</td> 
                <td>lucknow</td> 
            </tr> 
            <tr> 
                <td>punjab</td> 
                <td>chandigarh</td> 
            </tr> 
            <tr> 
                <td>haryana</td> 
                <td>candigarh</td> 
            </tr> 
        </table> 
    </center> 
  
</body> 
  
</html>

输出：

相关用法

注：本文由纯净天空筛选整理自Code_Mech大神的英文原创作品 jQuery | :even Selector。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。