为了方便开发者进行样式控制,Vue扩展了v-bind的语法,可以针对class类名和style行内样式进行控制。
对象→**键就是类名,值是布尔值。**如果值为true,有这个类,否则没有这个类
数组→数组中所有的类,都会添加到盒子上,本质就是一个class列表
<head>
<style>
.box {
width: 200px;
height: 200px;
border: 3px solid #000;
font-size: 30px;
margin-top: 10px;
}
.pink {
background-color: pink;
}
.big {
width: 300px;
height: 300px;
}
style>
head>
<body>
<div id="app">
<div class="box" :class="{pink:true ,big:true}">mannordiv>
<div class="box" :class="['pink','big']">雷迪亚兹div>
div>
<script src="https://cdn.jsdelivr.net/npm/vue@2.7.14/dist/vue.js">script>
<script>
const app = new Vue({
el: '#app',
data: {
}
})
script>
body>
html>
<div id="app">
<div class="box" :style="{width:'400px',height:'400px',backgroundColor:'green'}">div>
div>
小demo–动态滑动条:
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>Documenttitle>
<style>
.progress {
height: 25px;
width: 400px;
border-radius: 15px;
background-color: #272425;
border: 3px solid #272425;
box-sizing: border-box;
margin-bottom: 30px;
}
.inner {
width: 50%;
height: 20px;
border-radius: 10px;
text-align: right;
position: relative;
background-color: #409eff;
background-size: 20px 20px;
box-sizing: border-box;
transition: all 1s;
}
.inner span {
position: absolute;
right: -20px;
bottom: -25px;
}
style>
head>
<body>
<div id="app">
<div class="progress">
<div class="inner" :style="{width:precent+'%'}">
<span>{{precent}}%span>
div>
div>
<button @click="precent=25">设置25%button>
<button @click="precent=50">设置50%button>
<button @click="precent=75">设置75%button>
<button @click="precent=100">设置100%button>
div>
<script src="https://cdn.jsdelivr.net/npm/vue@2.7.14/dist/vue.js">script>
<script>
const app = new Vue({
el: '#app',
data: {
precent: 0,
}
})
script>
body>
html>