vue给数组中对象排序 sort函数的用法

var originalData =[{name: 'Tom'},{name: 'Andy'},{name: 'Marry'},{name: 'Tina'}];

for (let i = 0; i < originalData.length; i++) {
     this.originalData[i]['order'] = i
}

var originalData =[{name: 'Tom',order: 1},{name: 'Andy',order: 2},{name: 'Marry',order: 3},{name: 'Tina',order: 4}];

arraySort(property) {
            return function (a, b) {
                var value1 = a[property]
                var value2 = b[property]
                return value1 - value2
            }
        }

var originalData =[{name: 'mingxin',order: 6},{name: 'wanglin',order: 1},{name: 'jiangxia',order:8},{name: 'liufang',order: 4},{name: 'wangha',order: 1},{name: 'liming',order: 7}];
function arraySort(property){
    return function (a, b) {
        var value1 = a[property];
        var value2 = b[property];
        if(value1 - value2>0){
            console.log(value1+"大于"+value2+"调换位置")
        }else if(value1 - value2<0){
            console.log(value1+"小于"+value2+"位置不变")
        }else{
            console.log(value1+"等于"+value2+"位置不变")
        }
        return value1 - value2
    }
};
originalData.sort(arraySort('order'))

computed:{
    sortItems:function(){
    return this.items.sort(sortNumber);
    }
 }

function sortNumber(a,b){
            return a-b
  }

students:[
  {name:'jspang',age:32},
  {name:'Panda',age:30},
  {name:'PanPaN',age:21},
  {name:'King',age:45}
]

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));
   });
}

<ul>
   <li v-for="student in students">
       {{student.name}} - {{student.age}}
   </li>
</ul>

sortStudent:function(){
     return sortByKey(this.students,'age');
}