<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
.active {
color: pink;
}
</style>
<script src="../vue.js"></script>
</head>
<body>
<div id="app">
<h2 class="active">{{message}}</h2>
<h2 :class="{active: isActive}" @click="change">{{message}}</h2>
</div>
<script>
const app = new Vue({
el: "#app",
data: {
message: "hello",
active: "active",
isActive: "true"
},
methods: {
change() {
this.isActive = !this.isActive;
}
}
})
</script>
</body>
</html>