vue 根据数组中某一项的值进行排序的方法

1数组排序

<div id="app">
  <ul>
   <li v-for="a in arr1">{{a}}</li>
  </ul>
 </div>
  <script type="text/javascript">
   new Vue({
    el:"#app",
    data:{
     arr:[1,4,5,2,3,44]
    },computed:{
     arr1:function(){
      return this.arr.sort(sortNum)//调用排序方法
     }
    }
   })
   function sortNum(a,b){//排序方法
    return a-b;
   }
  </script>

2对象排序

<div id="app">
   <ul>
    <li v-for="(stu,index) in students1">{{stu}}</li>
   </ul>
  </div>
  <script type="text/javascript">
   new Vue({
    el:"#app",
    data:{
     students:[
      {name:"小a",age:20},
      {name:"小b",age:21},
      {name:"小c",age:18},
      {name:"小d",age:19},
      {name:"小f",age:18}
     ]
    },
    computed:{
     students1:function(){
      return sortKey(this.students,'age')
     }
    }
   })
   function sortKey(array,key){
    return array.sort(function(a,b){
     var x = a[key];
     var y = b[key];
     return ((x<y)?-1:(x>y)?1:0)
    })
   }
  </script>