VUE的tab頁面切換的四種方法
效果圖:
<!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='http://www.b3g6.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'>標題一</li> <li : @click='n=2'>標題二</li> <li : @click='n=3'>標題三</li> <li : @click='n=4'>標題四</li></ul><!-- neirong --><div class='tab_con'> <div v-show='n==1'>內容一</div> <div v-show='n==2'>內容二</div> <div v-show='n==3'>內容三</div> <div v-show='n==4'>內容四</div></div></div><script src='https://cdn.jsdelivr.net/npm/vue/dist/vue.js'></script><script> Vue.config.productionTip=false </script> <script src='http://www.b3g6.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:{//響應式的數據 data變化頁面也會跟著變化 n:1 } })}2.第二種模擬動態方法
效果如上圖所示:（省略）代碼:
<!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='http://www.b3g6.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='http://www.b3g6.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:{//響應式的數據 data變化頁面也會跟著變化 n:0, title:['標題一','標題二','標題三','標題四'], con:['內容一','內容二','內容三','內容四'] } })}3.第三種動態數據方法
效果圖:(滾動條的實現方式)
代碼:
<!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='http://www.b3g6.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='http://www.b3g6.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:{//響應式的數據 data變化頁面也會跟著變化 n:0, lists:[//可以有很多條數據//數組對象的形式 {title:’標題一’,con:’內容一’}, {title:’標題二’,con:’內容二’}, {title:’標題三’,con:’內容三’}, {title:’標題四’,con:’內容四’}, {title:’標題五’,con:’內容五’}, {title:’標題六’,con:’內容六’}, {title:’標題七’,con:’內容七’}, {title:’標題八’,con:’內容八’}, ] } })}4.動態實現方法(模擬后臺數據實現)
效果圖:
代碼:
<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='http://www.b3g6.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> <!-- -----------動態數據----------- --><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='http://www.b3g6.com/node_modules/axios/dist/axios.js'></script><script src='http://www.b3g6.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(){//響應式的數據 data變化頁面也會跟著變化 return{ n:0, m:0, lists:[ {title:’標題一’,con:’內容一’}, {title:’標題二’,con:’內容二’}, {title:’標題三’,con:’內容三’}, {title:’標題四’,con:’內容四’}, {title:’標題五’,con:’內容五’}, {title:’標題六’,con:’內容六’}, {title:’標題七’,con:’內容七’}, {title:’標題八’,con:’內容八’}, ], itemList:[] } }, methods:{ getList:function(){//this:--【函數和定時器的this指向都是window (而我們是要this指向vue實例)】var that=this;//局部定義改變this指向//每執行此方法，提前清空數組，保證往下執行代碼，數組為空// 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 是一個node中間件 (middeware)框架 如果把一個http處理過程比作是污水處理 中間件就像是一層層的過濾網 每個中間件把http處理過程中通過改寫 request或(和)response的數據、狀態、實現了特定的功能 中間件就是類似于一個過濾器的東西 在客戶端和應用程序之間的一個處理請求和響應的方法. *///創建中間介 啟動服務 node node.js var connect = require(’connect’);//創建連接var bodyParser=require(’body-parser’);//body解析 用于處理 JSON、RAW、Text和URL編碼的數據.var lists = {};var app = connect() .use(bodyParser.json())//JSON解析 .use(bodyParser.urlencoded({extended:true})) //use()方法還有一個可選的路徑字符串 對傳入請求的URL的開始匹配 //use()方法來維護一個中間件隊列 .use(function(req,res,next){ //跨域處理 //website you wish to allow to connect res.setHeader(’Access-Control-Allow-origin’,’*’);//允許任何源 //Request Methods you width to allow res.setHeader(’Access-Control-Allow-Methods’,’CET’,’POST’,’OPTIONS’,’PUT’,’PATCH’,’DELETE’);//允許任何方法 //Request headers you wish to allow res.setHeader(’Access-Control-Allow-Headers’,’*’);//允許任何類型 res.writeHead(200,{'Content-Type':'text/plain/xml;charset=utf-8'});//utf-8轉碼 next();//next方法就是一個遞歸調用 }) .use(’/list’,function(req,res,next){ var data={ 'code':'200', 'msg':'success', 'result':[ {name:'手機',state:'采購一'}, {name:'包包',state:'采購二'}, {name:'衣服',state:'采購三'}, {name:'電腦',state:'采購四'}, {name:'電子產品',state:'采購五'} ] } 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:（需要下載的插件）
1.先啟動服務node nodeServer.js（不能關閉，否則就會調取不到數據）2.之后運行html頁面 。
項目遇到的bug:vue中v-for循環遍歷后，當前內容不渲染的問題,因為this指向的問題導致.
解決方法一:
解決方法二:
解決方法三:
總結:url：接口要寫自己后臺的接口哦，這里只是模擬的接口,nodeServer.js文件可以定義多種格式的數據類型，也可以在本地自定義嵌套多種需要的類型，先試用之后可以在調后臺數據。
推薦學習VUE：文檔 ::https://cn.vuejs.org/v2/guide/list.html
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