//對json的key排序
    sortObjByKey:(obj)=>{
        var keys =Object.keys(obj).sort();
        var newObj ={};
        for(var i =0;i<keys.length;i++){
            var index = keys[i];
            newObj[index] =obj[index];
        }
        return JSON.stringify(newObj);
    },
　　 let json = {nasd:'123',bad:'dsa',age:21,obj:'dsa'}
    //複雜json的key排序
    sortAesc:(obj)=>{
        const sortObj = {};
        let Objarr = {};
        let arrChild =[];
        Object.keys(obj).sort().forEach(item=>{
            if(obj[item] instanceof Array){
                obj[item].forEach(index=>{
                    Object.keys(index).sort().forEach(indexKey=>{
                        Objarr[indexKey] = index[indexKey];
                    })
                    arrChild.push(Objarr);
                    Objarr ={}
                });
                obj[item] = arrChild;
            }
            sortObj[item] = obj[item];
        })
        return sortObj;
    }
   let json = {code:200,total:10,page:5,list:[{name:21,age:12,desc:'dasdas'}]}