var id ="";
for(var i=0;i<4;i++){
    var m =Math.floor(Math.random() * 10)
    id +=m;
}
    //var stmp ="";
    var stmp =+new Date;
    stmp =stmp %100;
//console.log(id);
console.log(stmp);
id +=stmp
console.log(id)