常用js方法整理

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1、排序数字

items:[20,23,18,65,32,19,5,56,41]
computed:{
    sortItems:function(){
    return this.items.sort(sortNumber);
    }
 }
function sortNumber(a,b){
            return a-b
  }

2、排序数组

students:[
  {name:'jspang',age:32},
  {name:'Panda',age:30},
  {name:'PanPaN',age:21},
  {name:'King',age:45}
]
computed:{
     sortStudent:function(){
     return sortByKey(this.students,'age');
}
 }
//数组对象方法排序:
function sortByKey(array,key){
    return array.sort(function(a,b){
      var x=a[key];
      var y=b[key];
      return ((x<y)?-1:((x>y)?1:0));
   });
}