I need help with javascript. I need to make a page that creates a prompt window where the user inputs a 4 letter password. The program adds 7 to all the numbers, and get the modulus of 10, Then swith the 1st and the 3rd number and the 2nd and the 4th numbers
This is my script so far:
CODE
<title>Javascript</title>
<script type="text/javascript">
<!--
var num = prompt ("Enter your four digit code","0");
var num = new Array(4)
var num = new Array("number1","number2","number3","number4");
var add = 7;
num1 = parseInt (number1);
num2 = parseInt (number2);
num3 = parseInt (number3);
num4 = parseInt (number4);
if (num1 >= 0 && num1 <= 9999)
num1 = (num1 + add);
num2 = (num2 + add);
num3 = (num3 + add);
num4 = (num4 + add);
num1 = (num1 % 10);
num2 = (num2 % 10);
num3 = (num3 % 10);
num4 = (num4 % 10);
document.write ("<h4>" + num3 + "" + num4 + "" + num1 + "" + num2 + "</h4>");
else
window.alert ("You didnt enter the correct number of Digits, Reload the page.");
// -->
</script>
</head>