<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
.active{
color: red;
}
</style>
</head>
<body>
<div id="app">
<h2 class="title" v-bind:class="{active: isActive,line: isLine}">{{message}}</h2>
<h2 class="title" v-bind:class="getClasses()">{{message}}</h2>
<button v-on:click="btnClick">🔘</button>
</div>
<script src="js/vue.js">
</script>
<script>
const app = new Vue({
el: '#app',
data: {
message : 'hello',
isActive: true,
isLine :true,
},
methods: {
btnClick: function(){
this.isActive = !this.isActive
},
getClasses: function(){
return {active: this.isActive,line: this.isLine}
}
}
})
</script>
</body>
</html>
<div id="app">
<h2 :class="[active,line]">{{message}}</h2>
</div>
<script src="js/vue.js">
</script>
<script>
const app = new Vue({
el: '#app',
data: {
message: 'hello',
active: 's',
line: 'a'
}
})
</script>
