JQuery $.get() statement have security holes?
<form name="registration" id="registration" method="post" action="register.php">
    <input type="text" id="username">
    <input type="password" id="password">
    <input type="button" id="sendinfo">
</form>

<script type="text/javascript" src="jquery-1.7.1.js"></script>
<script type="text/javascript">

    $(document).ready(function(e){

        var user = $("#username").val();
        var pass = $("#password").val();

        $("#sendinfo").click(function(){

            //Send data to php file
            $.get("register.php?", {uname: user, pass: pass}, function (msg, status, xhr){
                alert(msg);
            });

        });

    });

</script>