vue指令(代码部分二)

<template>
	<view>
		<view v-on:click="onClick">{{title}}view>
		<button @click="clickNum">数值：{{num}}button>
		<view class="box" :style="{background:bgcolor}" @click="clickBg">
			{{random}}
		view>
		
		<view class="block" :class ="{myactive:state}" @click="clickBlock">view>
		br>
		<view class="block" :class ="state ? 'myactive' : '' ">view>
		
		点谁高亮显示
		<view class="nav">
			<view class="item" :class="navIndex==index ? 'active':'' " v-for="(item,index) in navArr" :key="item.id" @click="
			clickNav(index)">{{item.title}}view>
		view>
	view>
template>
 
<script>
	export default {
		data() {
			return {
				title:"uniapp",
				num:1,
				bgcolor:"red",
				random:0,
				state:false,
				navArr:[
					{id:1,title:"首页"},
					{id:2,title:"介绍"},
					{id:3,title:"教程"},
					{id:4,title:"组件"}
				],
				navIndex:0
			};
		},
		methods:{
			onClick:function(){
				this.title="点击事件修改名字"
			},
			clickNum(){
				this.num++
			},
			clickBg(){
				// 随机变
				let color="#"+String(Math.random()).substr(3,6)
				this.random =Math.ceil(Math.random(0,100)*100) 
				console.log(color)
				this.bgcolor=color
			},
			clickBlock(){
				this.state=!this.state
			},
			clickNav(e){
				this.navIndex=e
			}
			
		}
	}
script>
 
<style lang="scss">
.box{
	width: 200rpx;
	height: 200rpx;
}
.block{
	width: 300rpx;
	height: 300rpx;
	background:blue ;
}
.myactive{
	width: 400rpx;
	background:pink;
	border-radius: 20rpx;
}
.nav{
	display: flex;
	justify-content:space-around;
	align-items: center;
	.item{
		flex: 1;
		line-height: 90rpx;
		background: #ccc;
		text-align: center;
		&.active{
			background: #1aa034;
			color: #fff;
		}
	}
}
style>