var str = "13900000000,13900000000,13900000000";
var numbers = str.split(",");
for(var i=0;i<numbers.length;i++){
if(numbers[i].replace("/\d{11}/","") == ""){
alert(numbers[i]);
}else{
alert("invalid number at "+i);
}
}
var numbers = str.split(",");
for(var i=0;i<numbers.length;i++){
if(numbers[i].replace("/\d{11}/","") == ""){
alert(numbers[i]);
}else{
alert("invalid number at "+i);
}
}
var re=/^(?:\d{11},)*\d{11}$/;
alert(re.test(s));