动态绑定的两种方式
程序员文章站
2024-03-23 23:24:52
...
第一种：属性绑定
第二种：计算属性绑定
区别：计算属性是确定发生变化后才进行更新·
其实知识点还是之前总结的，没有新知识点，直接上代码吧！
<!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">
<style>
span {
background: red;
display: inline-block;
padding: 10px;
color: #fff;
margin: 10px 0;
}
.changeColor span {
background: green;
}
.changeLength span:after {
content: '米萊迪';
margin-left: 10px;
}
</style>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<title>Vue CDN</title>
</head>
<body>
<div id="vue-app">
<h1>动态绑定样式 两种方式</h1>
<!-- <h2>示例1 属性绑定</h2>
<div @click="mrChangeColor = !mrChangeColor" v-bind:class="{changeColor:mrChangeColor}">
<span>Hello</span>
</div> -->
<h2>示例2 计算属性绑定</h2>
<button @click="mrChangeColor = !mrChangeColor">ChangeColor</button>
<button @click="mrChangeLength = !mrChangeLength">ChangeLength</button>
<div v-bind:class="compClasses">
<span>Hello</span>
</div>
<!-- 计算属性是确定发生变化后才进行更新 -->
</body>
<script>
new Vue({
el: '#vue-app',
data() {
return {
mrChangeColor: true,
mrChangeLength: false,
};
},
methods: {},
computed: {
compClasses() {
return {
changeColor: this.mrChangeColor,
changeLength: this.mrChangeLength,
};
}
}
});
</script>
</html>
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