操作元素选取的是img元素
mvvm选取的是avalon框架
操作类名上感觉还是jquery有着很强的优势，毕竟有着toggle方法
mvvm上实现相同效果还得做逻辑判断，比较麻烦，代码行数就多了几行。
点击看效果demo
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<link href="./demo.css" rel="stylesheet">
<link href="https://cdn.bootcss.com/bootstrap/4.0.0-beta.2/css/bootstrap.css" rel="stylesheet">
<script src="https://cdn.bootcss.com/jquery/3.2.1/jquery.js"></script>
<script src="https://unpkg.com/avalon2@2.2.8/dist/avalon.js"></script>
<style>
.clickClass{
padding: 5px;
border: 2px solid #e4e4e4;
background: #868e96;
}
</style>
</head>
<body>
<div class="demo-container">
<div class="header">
<i><b>jquery和mvvm的类名操作比较</b></i>
</div>
<div class="method-title">jq方法</div>
<div class="method-container">
<img id="img1" src=".././images/imgcommon1.jpg">
</div>
<div class="method-title">mvvm方法</div>
<div class="method-container" :controller="img2">
<img ms-click="@clickImg" id="img2" :class="@className" src=".././images/imgcommon1.jpg">
</div>
</div>
<script>
//jq way
$('#img1').click(function(e) {
// $(this).addClass('clickClass');
$(this).toggleClass('clickClass');
});
//mvvm way
let mvvmImg = avalon.define({
$id: 'img2',
className: '',
clickImg(e) {
this.className = 'clickClass';
}
});
</script>
</body>
</html>