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<html>
<head>
<title>07.IsPrime</title>
<link href="styles/js-console.css" rel="stylesheet" />
</head>
<body>
    <fieldset id="inputs">

        <label for="number">Enter a number = </label>
        <input type="text" id="number" />
        <br />
        <input type="submit" value="Is the number prime?" onclick="IsPrime()" />

    </fieldset>
<div id="js-console"></div>
<script src="scripts/js-console.js"></script>

<script>
        function IsPrime()
        {
            var number = parseInt(document.getElementById("number").value);
            var prime = true;
            for (var i = 2; i <= Math.sqrt(number); i++)
            {
                if (number % i == 0)
                {
                    prime = false;
                    break;
                }
            }

            if(prime)
            {
                jsConsole.writeLine("The number <strong>is prime</strong>");
            }
            else
            {
                jsConsole.writeLine("The number is <strong>not prime</strong>");
            }
        }
</script>
</body>
</html>