JQuery toggleClass()用法及代碼示例

toggleClass()方法是jQuery中的一種內置方法，用於切換或更改附加到所選元素的類。

用法:

$(selector).toggleClass(class, function, switch)

參數：此方法接受上述和以下所述的三個參數：

class:它是必需的參數，用於指定需要替換的類名稱。
function:它是可選參數，用於指定返回一個或多個類名稱的函數。此參數包含元素的索引位置和元素的類名稱。
switch:它是可選參數，用於指定true或false。默認情況下為true。

返回值：此方法返回通過toggleClass()方法進行指定更改的所選元素。

以下示例說明了jQuery中的toggleClass()方法：

示例1:

<!DOCTYPE html> 
<html> 
    <head> 
        <title>The toggleclass Method</title> 
        <script src= 
        "https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"> 
        </script> 
          
        <!-- jQuery code to show the working of this method -->
        <script> 
            $(document).ready(function() { 
                $("button").click(function() { 
                    $("div").toggleClass("gfg"); 
                }); 
            }); 
        </script> 
        <style> 
            .gfg { 
                font-size: 25px; 
                background-color: yellow; 
                min-height:120px; 
            } 
            div { 
                width: 200px; 
                min-height: 120px; 
                background-color: lightgreen; 
                padding: 20px; 
                font-weight: bold; 
                font-size: 20px; 
            } 
        </style> 
    </head> 
    <body> 
        <!-- click inside this div element to see the change -->
        <div> 
            <p>Hello!</p> 
            <p>Welcome to GeeksforGeeks.!</p> 
            <button>Click Here!</button> 
        </div> 
    </body> 
</html>

輸出：
toggleclass method

示例2:

<!DOCTYPE html> 
<html> 
    <head> 
        <title>toggle class property</title> 
        <script src= 
        "https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"> 
        </script> 
          
        <!-- jQuery code to show the working of this method -->
        <script> 
            $(document).ready(function() { 
                $("button").click(function() { 
                    $("div").toggleClass(function(n) { 
                        n = 1; 
                        return "item_" + n; 
                    }); 
                }); 
            }); 
        </script> 
        <style> 
            .item_1 { 
                color: green; 
                font-weight: bold; 
                font-size: 20px; 
                background-color: white; 
                border: 2px solid green; 
            } 
            div { 
                text-align:center; 
                width: 200px; 
                min-height: 100px; 
                background-color: lightgreen; 
                padding: 20px; 
                border: 2px solid black; 
                font-weight: bold; 
            } 
        </style> 
    </head> 
    <body> 
        <!-- click inside this div element -->
        <div> 
            <p>Welcome to GeeksforGeeks!</p> 
            <button>Click Here!</button> 
        </div> 
    </body> 
</html>

輸出：
toggle class imag

相關用法

注：本文由純淨天空篩選整理自kundankumarjha大神的英文原創作品 jQuery | toggleClass() with Examples。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。