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+"調(diào)換位置")
        }else if(value1 - value2<0){
            console.log(value1+"小于"+value2+"位置不變")
        }else{
            console.log(value1+"等于"+value2+"位置不變")
        }
        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');
}