一、定义样式
<style> .blueBack { background-color: blue; } .yellowBack { background-color: yellow; } </style>
二、定义两个按钮，一个div
<div id="vueFirst"> <div :class="backColor">{{info}}</div> <hr> <input type="button" value="变黄" @click="changeColorToYellow"></input> <input type="button" value="变蓝" @click="changeColorToBlue"></input> </div>
三、添加click事件
<script type="text/javascript" src="js/vue.js"></script>
<script type="text/javascript"> var vm = new Vue({ el: "#vueFirst", data: { info: "hello world", backColor: "blueBack" }, methods: { changeColorToYellow() { this.backColor = "yellowBack" }, changeColorToBlue() { this.backColor = "blueBack" } } })
完整代码如下：
<html>
<head>
<style>
.blueBack {
background-color: blue;
}
.yellowBack {
background-color: yellow;
}
</style>
</head>
<body>
<div id="vueFirst">
<div :class="backColor">{{info}}</div>
<hr>
<input type="button" value="变黄" @click="changeColorToYellow"></input>
<input type="button" value="变蓝" @click="changeColorToBlue"></input>
</div>
<script type="text/javascript" src="js/vue.js"></script>
<script type="text/javascript">
var vm = new Vue({
el: "#vueFirst",
data: {
info: "hello world",
backColor: "blueBack"
},
methods: {
changeColorToYellow() {
this.backColor = "yellowBack"
},
changeColorToBlue() {
this.backColor = "blueBack"
}
}
})
</script>
</body>
</html>