如何使用JavaScript使用大写字母生成8位随机数

Question

I need one help.I need to generate 8 digit upper case alpha numeric random number using Javascript.I did something but its its not generating like that.I am explaining my code below.

$scope.getRandomNumber=function(){
  var rand = (Math.random() * new Date().getTime()).toString(36).replace(/\./g, '');
  return rand;
}

The above function is not returning like my requirement.Please help me.

Answer 1

var randStr = "";
for(var letter=1;letter<=8;letter++) {
    randStr+= letter%2==0 ? String.fromCharCode(Math.random()*(91-65)+65) : Math.ceil(Math.random()*9);
}
alert(randStr.toUpperCase());

you could also use charCodes to generate alpha chars