Number Sequence Generation Script

Question 1

Here it is in javascript, but I have it just adding a thousand numbers by default. It takes forever to do a million.

<html>
<head>
<title>Number Generator</title>
<script type="text/javascript">
    function generateNumbers() {
        var startNum = parseInt(document.getElementById("startNum").value);
        var numsToAdd = parseInt(document.getElementById("numsToAdd").value);
        var output = document.getElementById("output");
        for (var num = startNum; num < startNum + numsToAdd; num++) {
            var divelem = document.createElement("div");
            divelem.innerHTML = num;
            output.appendChild(divelem);
        }
    }

    function clearNumbers() {
        var output = document.getElementById("output");
        output.innerHTML = "";
    }
</script>
</head>
<body>
Start Number: <input type="text" id="startNum" name="startNum" value="1486262272">
<input type="button" value="Run" onclick="generateNumbers()">
<input type="button" value="Clear" onclick="clearNumbers()">
<br>
Nums To Add: <input type="text" id="numsToAdd" name="numsToAdd" value="1000">
<div id="output"></div>
</body>

Question 2

Here it is in perl.

#!/usr/bin/perl

$num = $start_num = $ARGV[0];
if ($start_num eq "") {
    die "must pass in starting number\n";
}

while ($num < $start_num + 1000000) {
    print $num++."\n";
}

print "started with $start_num, ended with $num\n";

Just run it by passing in a number.

million.pl 12345678912345678