VUE的tab页面切换的四种方法
效果图:
<!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>view的tab交互</title> <link rel='stylesheet' href='https://www.haobala.com/css/demo.css' rel='external nofollow' rel='external nofollow' rel='external nofollow' rel='external nofollow' ></head><body><div id='my'><ul class='tab_tit'> <li : @click='n=1'>标题一</li> <li : @click='n=2'>标题二</li> <li : @click='n=3'>标题三</li> <li : @click='n=4'>标题四</li></ul><!-- neirong --><div class='tab_con'> <div v-show='n==1'>内容一</div> <div v-show='n==2'>内容二</div> <div v-show='n==3'>内容三</div> <div v-show='n==4'>内容四</div></div></div><script src='https://cdn.jsdelivr.net/npm/vue/dist/vue.js'></script><script> Vue.config.productionTip=false </script> <script src='https://www.haobala.com/js/tab.js' type='text/javascript'></script></body></html>
css
*{ margin: 0; padding: 0; box-sizing:border-box;}body,html{ height: 100%;}.demo_warp .tab_tit { display: flex; flex: 1; margin:.2rem;}.demo_warp .active { color:red; background-color: cadetblue;}.demo_warp ul li { list-style: none; width: 23%; text-align: center; background-color: #ccc; margin:0 1%;}.demo_warp .tab_con { width: 100%; height: 3rem; border:1px solid rgb(85, 85, 177); text-align: center;}
js
window.onload=function(){ new Vue({ el:’#my’, data:{//响应式的数据 data变化页面也会跟着变化 n:1 } })}2.第二种模拟动态方法
效果如上图所示:（省略）代码:
<!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>view的tab交互</title> <link rel='stylesheet' href='https://www.haobala.com/css/demo.css' rel='external nofollow' rel='external nofollow' rel='external nofollow' rel='external nofollow' ></head><body><div id='my'><ul class='tab_tit'> <li v-for='(v,i) in title' : @click='n=i'>{{v}}</li></ul><!-- neirong --><div class='tab_con'> <div v-for='(v,i) in con' v-show='n==i'>{{v}}</div></div></div><script src='https://cdn.jsdelivr.net/npm/vue/dist/vue.js'></script><script> Vue.config.productionTip=false </script> <script src='https://www.haobala.com/js/tab.js' type='text/javascript'></script></body></html>
css
*{ margin: 0; padding: 0; box-sizing:border-box;}body,html{ height: 100%;}.demo_warp .tab_tit { display: flex; flex: 1; margin:.2rem;}.demo_warp .active { color:red; background-color: cadetblue;}.demo_warp ul li { list-style: none; width: 23%; text-align: center; background-color: #ccc; margin:0 1%;}.demo_warp .tab_con { width: 100%; height: 3rem; border:1px solid rgb(85, 85, 177); text-align: center;}
js
window.onload=function(){ new Vue({ el:’#my’, data:{//响应式的数据 data变化页面也会跟着变化 n:0, title:['标题一','标题二','标题三','标题四'], con:['内容一','内容二','内容三','内容四'] } })}3.第三种动态数据方法
效果图:(滚动条的实现方式)
代码:
<!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>view的tab交互</title> <link rel='stylesheet' href='https://www.haobala.com/css/demo.css' rel='external nofollow' rel='external nofollow' rel='external nofollow' rel='external nofollow' ></head><body><div id='my'><ul class='tab_tit'> <li v-for='(v,i) in lists' : @click='n=i'>{{v.title}}</li></ul><!-- neirong --><div class='tab_con'> <div v-for='(v,i) in lists' v-show='n==i'>{{v.con}}</div></div></div><script src='https://cdn.jsdelivr.net/npm/vue/dist/vue.js'></script><script> Vue.config.productionTip=false </script> <script src='https://www.haobala.com/js/tab.js' type='text/javascript'></script></body></html>
css
*{ margin: 0; padding: 0; box-sizing:border-box;}body,html{ height: 100%;}.demo_warp .tab_tit{ display: flex; justify-content: space-between; white-space: nowrap; overflow-y: hidden; overflow-x: scroll; margin:1% 1% 1% 0;} ::-webkit-scrollbar{ display: none; }.demo_warp .active { color:red; background-color: cadetblue;}.demo_warp ul li { list-style: none; padding:1.2% 3.2%; text-align: center; background-color: #ccc; margin-left: 1%;}.demo_warp .tab_con { width: 100%; height: 3rem; border:1px solid rgb(85, 85, 177); text-align: center;}
js
window.onload=function(){ new Vue({ el:’#my’, data:{//响应式的数据 data变化页面也会跟着变化 n:0, lists:[//可以有很多条数据//数组对象的形式 {title:’标题一’,con:’内容一’}, {title:’标题二’,con:’内容二’}, {title:’标题三’,con:’内容三’}, {title:’标题四’,con:’内容四’}, {title:’标题五’,con:’内容五’}, {title:’标题六’,con:’内容六’}, {title:’标题七’,con:’内容七’}, {title:’标题八’,con:’内容八’}, ] } })}4.动态实现方法(模拟后台数据实现)
效果图:
代码:
<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>view的tab交互</title> <link rel='stylesheet' type='text/css' href='https://www.haobala.com/css/demo.css' rel='external nofollow' rel='external nofollow' rel='external nofollow' rel='external nofollow' ></head><body><div id='my'> <ul class='tab_tit'> <li v-for='(v,i) in lists' : @click='m=i' :key='i.title'>{{v.title}}</li> </ul> <!-- neirong --> <div class='tab_con'> <div v-for='(v,i) in lists' v-show='m==i' :key='i.con'>{{v.con}}</div> </div> <!-- -----------动态数据----------- --><ul class='tab_tit'> <li v-for='(item, index) in itemList' : @click='n=index' :key='index'>{{item.name}}</li></ul><!-- neirong --><div class='tab_con'> <div v-for='(item, index) in itemList' v-show='n==index' :key='index'>{{item.state}}</div></div></div><script src='https://cdn.jsdelivr.net/npm/vue/dist/vue.js'></script><script> Vue.config.productionTip=false </script> <script src='https://www.haobala.com/node_modules/axios/dist/axios.js'></script><script src='https://www.haobala.com/js/tab.js' type='text/javascript'></script></body></html>
css
*{ margin: 0; padding: 0; box-sizing:border-box;}body,html{ height: 100%;}.demo_warp .tab_tit{ display: flex; justify-content: space-between; white-space: nowrap; overflow-y: hidden; overflow-x: scroll; margin:1% 1% 1% 0;} ::-webkit-scrollbar{ display: none; }.demo_warp .active { color:red; background-color: cadetblue;}.demo_warp ul li { list-style: none; padding:1.2% 3.2%; text-align: center; background-color: #ccc; margin-left: 1%;}.demo_warp .tab_con { width: 100%; height: 3rem; border:1px solid rgb(85, 85, 177); text-align: center;}
tab.js
window.onload=function(){ new Vue({ el:’#my’, data(){//响应式的数据 data变化页面也会跟着变化 return{ n:0, m:0, lists:[ {title:’标题一’,con:’内容一’}, {title:’标题二’,con:’内容二’}, {title:’标题三’,con:’内容三’}, {title:’标题四’,con:’内容四’}, {title:’标题五’,con:’内容五’}, {title:’标题六’,con:’内容六’}, {title:’标题七’,con:’内容七’}, {title:’标题八’,con:’内容八’}, ], itemList:[] } }, methods:{ getList:function(){//this:--【函数和定时器的this指向都是window (而我们是要this指向vue实例)】var that=this;//局部定义改变this指向//每执行此方法，提前清空数组，保证往下执行代码，数组为空// this.itemList = [];axios({ method:’get’, url:’http://localhost:4000/list’}).then(function(res){ console.log(res); that.itemList = res.data.result;}).catch(function(error){ console.log(error);}) } }, mounted:function(){ this.getList(); }, })}
nodeServer.js
/* connect 是一个node中间件 (middeware)框架 如果把一个http处理过程比作是污水处理 中间件就像是一层层的过滤网 每个中间件把http处理过程中通过改写 request或(和)response的数据、状态、实现了特定的功能 中间件就是类似于一个过滤器的东西 在客户端和应用程序之间的一个处理请求和响应的方法. *///创建中间介 启动服务 node node.js var connect = require(’connect’);//创建连接var bodyParser=require(’body-parser’);//body解析 用于处理 JSON、RAW、Text和URL编码的数据.var lists = {};var app = connect() .use(bodyParser.json())//JSON解析 .use(bodyParser.urlencoded({extended:true})) //use()方法还有一个可选的路径字符串 对传入请求的URL的开始匹配 //use()方法来维护一个中间件队列 .use(function(req,res,next){ //跨域处理 //website you wish to allow to connect res.setHeader(’Access-Control-Allow-origin’,’*’);//允许任何源 //Request Methods you width to allow res.setHeader(’Access-Control-Allow-Methods’,’CET’,’POST’,’OPTIONS’,’PUT’,’PATCH’,’DELETE’);//允许任何方法 //Request headers you wish to allow res.setHeader(’Access-Control-Allow-Headers’,’*’);//允许任何类型 res.writeHead(200,{'Content-Type':'text/plain/xml;charset=utf-8'});//utf-8转码 next();//next方法就是一个递归调用 }) .use(’/list’,function(req,res,next){ var data={ 'code':'200', 'msg':'success', 'result':[ {name:'手机',state:'采购一'}, {name:'包包',state:'采购二'}, {name:'衣服',state:'采购三'}, {name:'电脑',state:'采购四'}, {name:'电子产品',state:'采购五'} ] } res.end(JSON.stringify(data)); next(); }) .use(’/list_get’,function(req,res,next){ var data={ 'code':’200’, 'msg':'success', 'result':lists } res.end(JSON.stringify(data)); next(); }) .use(’/list_add’,function(req,res,next){ if(req.method==’POST’){ console.log(req.body.name); lists.push({name:req.body.name,state:req.body.state,id:index++}); var data={'code':200,'msg':'success'}; res.end(JSON.stringify(data)); }else{ res.end(JSON.stringify({})); } next(); }) .use(’/list_del’,function(req,res,next){ console.log(req.body.id); //lists=lists.filter(list=>list.id!=req.body.id); for(var i=0;i<lists.length;i++){ if(req.body.id===lists[i].id){ lists.splice(i,1); } } console.log(lists); var data={'code':200,'msg':'success'}; res.end(JSON.stringify(data)); next(); }) .listen(4000); console.log(’Server started on port 4000.’);
插件:（需要下载的插件）
1.先启动服务node nodeServer.js（不能关闭，否则就会调取不到数据）2.之后运行html页面 。
项目遇到的bug:vue中v-for循环遍历后，当前内容不渲染的问题,因为this指向的问题导致.
解决方法一:
解决方法二:
解决方法三:
总结:url：接口要写自己后台的接口哦，这里只是模拟的接口,nodeServer.js文件可以定义多种格式的数据类型，也可以在本地自定义嵌套多种需要的类型，先试用之后可以在调后台数据。
推荐学习VUE：文档 ::https://cn.vuejs.org/v2/guide/list.html
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