Code
<script type="text/javascript">
function getVals() {
var num1 = document.getElementById('n1').value
var num2 = document.getElementById('n2').value
if(num1 > num2) {
alert('number 1 is greater')
var j = 0
while(num1 > j){
document.write(j++);
}
}
else if(num2 > num1) {
alert('number 2 is greater')
var j = 0
while(num2 > j){
document.write(j++);
}
}
}
</script>
</head>
<body>
<form id="num_comp" onsubmit="return false">
<label>Number One </label>
<input type="text" name="n1" id="n1"/>
<label>Number Two </label>
<input type="text" name="n2" id="n2"/>
<input type="submit" value="Submit" name="snum" onclick="getVals()"/>
</form>
</body>