Vue-过滤器filters--数据处理--主要用于时间格式化

过滤器

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
    <title></title>
    <script src="js/mui.min.js"></script>
    <link href="css/mui.min.css" rel="stylesheet"/>
   
</head>
<body>
    <header class="mui-bar mui-bar-nav">
        <h1 class="mui-title">自己没事写个vue双向绑定表格</h1>
    </header>
    
    <div class="mui-content">
       <div id="app">
    <div class="mui-row" style="margin-top: 10px;">
        <div class="mui-col-sm-2 mui-col-xs-2">
            <label>Id: <input v-model="id" type="text" style="height: 30px;width: 60%;text-align: left;"></label>
           
           
        </div>
           <div class="mui-col-sm-4 mui-col-xs-4">
            <label>name:<input v-model="name" type="text" style="height: 30px;width: 50%;"></label>
            
           </div>
           <div class="mui-col-sm-2 mui-col-xs-2">
            <input type="button" value="Add" @click="add()" style="background-color: cornflowerblue;">
            
           </div>
           <div class="mui-col-sm-4 mui-col-xs-4">
            <label style="margin-left: -5px;">Search:<input v-model="keywords" type="text" style="width: 50%;height: 30px;"></label>
            
           </div>
     </div>
     
    <table border="1" style="margin: 0 auto;">
        <caption>数据展示
            <tr>
                <th>ID</th>
                <th>Name</th>
                <th>Creatime</th>
                <th>Operation</th>
            </tr>
            <tr v-for="item in search(keywords)" :key="item.id">
                <td>{{item.id}}</td>
                <td v-text="item.name"></td>
                <td>{{item.ctime | dateFormat()}}</td>
                <td><a href="" @click.prevent="del(item.id)">Delete</a></td>
            </tr>
            </caption>
    </table>
    </div>
    <div id="app2">
        <h3 style="width: 100%;">
            {{dt | dateFormat('')}}
        </h3>
    </div>
    </div>
    
    <script src="js/vue.js"></script>
    <script type="text/javascript" charset="utf-8">
          mui.init();
          //全局过滤器--进行时间的格式化
          Vue.filter('dateFormat',function(dateStr){
              var dt = new Date(dateStr)
              var y = dt.getFullYear()
              var m = dt.getMonth()+1
              var d = dt.getDate()
              //return y+"-"+m+"-"+d
              //这个不是英文半角引号，是左上角那个1旁边那个符号撇号
              return `${y}-${m}-${d}`
          })
          
          var vm = new Vue({
              el:'#app',
              data:{
                  id:"",
                  name:"",
                  keywords:"",
                  list:[
                  {id:1,name:"宝马",ctime:new Date()},
                  {id:2,name:"奔驰",ctime:new Date()},
                  ]
              },
              methods:{
                  add(){
                      var car = {id:this.id,name:this.name,ctime:new Date()}
                      this.list.push(car)
                      this.id=this.name=''
                      
                  },
                  del(id){
                      this.list.some((item,i)=>{
                          if(item.id==id){
                              this.list.splice(i,1)
                              return true;
                          }
                      })
                  },
                  search(keywords){
                      var newList = []
                      this.list.forEach(item=>{
                          if(item.name.indexOf(keywords)!=-1){
                              newList.push(item)
                          }
                      })
                      return newList
                  }
                  
              }
           });
           //定义一个自有的过滤器
           var vm2 = new Vue({
               el:'#app2',
               data:{
                   dt: Date()
               },
               methods:{
                   
               },
               //定义私有的过滤器
               filters:{
                   dateFormat:function(dateStr,pattern)
                   {
                       var dt = new Date(dateStr)
                      var y = dt.getFullYear()
                    var m = (dt.getMonth()+1).toString().padStart(2, '0')  //用String的padStart方法补齐
                    var d = (dt.getDate()).toString().padStart(2,'0')
                    if (pattern.toLowerCase()=='yyyy-mm-dd')
                    {
                        return `${y}-${m}-${d}`
                    }else
                    {
                        var hh = dt.getHours()
                        var mm = dt.getMinutes()
                        var ss = dt.getSeconds()
                        return `${y}-${m}-${d} ${hh}:${mm}:${ss} 私有`
                    }
                   
                   }
               }
           })
    </script>
</body>
</html>