JQuery toggleClass()用法及代码示例

toggleClass()方法是jQuery中的一种内置方法，用于切换或更改附加到所选元素的类。

用法:

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

参数：此方法接受上述和以下所述的三个参数：

class:它是必需的参数，用于指定需要替换的类名称。
function:它是可选参数，用于指定返回一个或多个类名称的函数。此参数包含元素的索引位置和元素的类名称。
switch:它是可选参数，用于指定true或false。默认情况下为true。

返回值：此方法返回通过toggleClass()方法进行指定更改的所选元素。

以下示例说明了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>

输出：
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>

输出：
toggle class imag

相关用法

注：本文由纯净天空筛选整理自kundankumarjha大神的英文原创作品 jQuery | toggleClass() with Examples。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。