jquery怎么添加多个类名

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>jquery添加多个类</title>
    <script src="./jquery.min.js"></script>
</head>
<style>
    .class1{
        width: 100px;
        height: 100px;
        background: red;
    }
</style>
<body>
<div>我是div</div>
</body>
<script>
    $("div").addClass("class1 class2")
</script>
</html>

效果图如下:

原文地址:https://www.cnblogs.com/malong1992/p/11647749.html