对象方式绑定：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src="vue.js"></script>
</head>
<body>
<style>
.kk{
font-size: 30px;
}
</style>
<div id="app">
<div v-bind:class="{kk:isg}">
急急急
</div>
</div>
<script>
var app = new Vue({
el:'#app',
data:{
isg:true,
}
})
</script>
</body>
</html>
数组方式绑定：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src="vue.js"></script>
</head>
<body>
<style>
.kk{
font-size: 30px;
}
.gg{
background-color: blanchedalmond;
}
</style>
<div id="app">
<div v-bind:class="[isg,isd]">
急急急
</div>
</div>
<script>
var app = new Vue({
el:'#app',
data:{
isg:'kk',
isd:'gg'
}
})
</script>
</body>
</html>
