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jQuery hasClass() 方法

❮ jQuery HTML/CSS 方法

示例

检查是否有任何 <p> 元素具有名为 "intro" 的类

$("button").click(function(){
  alert($("p").hasClass("intro"));
});
亲自试一试 »

定义和用法

hasClass() 方法检查任何选定的元素是否具有指定的类名。

如果任何选定的元素具有指定的类名,则此方法将返回 "true"。


语法

$(选择器).hasClass(类名)

参数 描述
类名 必需。指定在选定元素中搜索的类名

❮ jQuery HTML/CSS 方法

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