<!DOCTYPE html>
<html lang="en">
<head>
<title>Prime factors calculator</title>
</head>
<body>
<h1>Prime factors calculator without html.</h1>
<script type="text/javascript" for="window" event="onload">
// calc prime factors
var inputText, outputText;
var prime; // try this factor (only primes will match!)
var number; // product of the remaining factors
while (true) {
outputText = "";
inputText = window.prompt("Please enter a number (or 0 to exit):", "")
if ((inputText == null) || (inputText.length == 0) || (inputText == "0"))
break;
prime = 2; // start with 2
number = parseInt(inputText);
while ((number > 1) && (prime * prime <= number)) {
if (number % prime != 0) {
// try the next factor (slowly)
prime += 1;
} else {
// found a factor !
outputText = outputText + " " + prime;
number = number / prime;
} // if
} // while
if (number > 1) {
// the last factor (a prime) is here.
outputText = outputText + " " + number;
}
window.alert("The factors of " + inputText + " are:" + outputText);
} // while
</script>
<hr />
<p>Programming the old (80's) way, that noone expects on web application.</p>
<p>Reload this page to start the calculator again. Press <Esc> to exit.</p>
<p>This page is part of the <a href="http://ajaxaspects.blogspot.com/">http://ajaxaspects.blogspot.com/</a> project.</p>
<hr />
</body>
</html>
This page is part of the http://www.mathertel.de/ web site.
For updates and discussions see http://ajaxaspects.blogspot.com/.