jQuery :even用法及代碼示例

jQuery：even選擇器用於從元素中選擇偶數索引。索引的數量從0開始。工作方式與：odd選擇器相同，但對於偶數。

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>

輸出：

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>

輸出：

相關用法

注：本文由純淨天空篩選整理自Code_Mech大神的英文原創作品 jQuery | :even Selector。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。