JS- Split the string with comma (,) make as array,detect missing item (sorting),arrya to string

JS- Split the string with comma (,) make as array 
JS- Compare two array have same value - detect missing item (sorting)
JS - array to string

var SerialArry = "123,13, 1234";
var ResponseArry = "123,1234";

SerialArry =SerialArry.split(",");
for(var i=0; i<SerialArry.length; i++) { 
SerialArry[i] = +SerialArry[i]; // [123,13,1234]
}
SerialArry = SerialArry.sort();


ResponseArry = ResponseArry.split(",");
for(var i=0; i<ResponseArry.length; i++) {
ResponseArry[i] = +ResponseArry[i]; // [123,1234]
}
ResponseArry = ResponseArry.sort();


var InvalidNo = SerialArry.filter(function(x) 
{ return ResponseArry.indexOf(x) < 0 }); // missing number from response array


SerialArry = SerialArry.toString(); // convert Array to String
ResponseArry = ResponseArry.toString();
if(SerialArry == ResponseArry) {
console.log('true'); // request & response  same and true


}
else {
console.log('false') // request & response false not same

}