I have this code in jQuery: (the file name is javascript.js ...I was using JavaScript before...)
$(document).ready(function() {
 $("#readFile").click(function() {
    $.get('test.txt', function(data) {
      $("#bottom_pane_options").html(data); // #bottom_pane_options is the div I want the data to go
    }, 'text');
 });
});
...and this in HTML:
<!DOCTYPE html>
<html>
<head>
    <title>Culminating</title>
    <link href="style.css" rel="stylesheet" type="text/css">
    <script type="text/javascript" src="./javascript.js"></script>
    <script
        src="http://maps.googleapis.com/maps/api/js?key=AIzaSyCJnj2nWoM86eU8Bq2G4lSNz3udIkZT4YY&sensor=false">
    </script>
    <script src="http://ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script>
    <script>
        function initialize()
        {
        var mapProp = {
          center:new google.maps.LatLng(50.569283,-84.378433),
          zoom:5,
          mapTypeId:google.maps.MapTypeId.TERRAIN
          };
        var map=new google.maps.Map(document.getElementById("googleMap"),mapProp);
        }
        google.maps.event.addDomListener(window, 'load', initialize);
    </script>
</head>
<body>
    <div class="content">
        <div id="googleMap"></div>
        <div id="right_pane_results">hi</div>
        <div id="bottom_pane_options">
            <button id="readFile">Read File</button>
        </div>
    </div>
</body>
When I check the console, I get the Uncaught ReferenceError saying that $ is not defined on the first line.  I'm assuming that it is referring to the first character on the first line.  I got this code from a website and I'm new to jQuery so I'm not sure what is going wrong here.  
Any suggestions?
Change the order you're including your scripts (jQuery first):
<script src="http://ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script>
<script type="text/javascript" src="./javascript.js"></script>
<script
    src="http://maps.googleapis.com/maps/api/js?key=YOUR_APIKEY&sensor=false">
</script>
                        The MVC 5 stock install puts javascript references in the _Layout.cshtml file that is shared in all pages. So the javascript files were below the main content and document.ready function where all my $'s were.
BOTTOM PART OF _Layout.cshtml:
    <div class="container body-content">
        @RenderBody()
        <hr />
        <footer>
            <p>© @DateTime.Now.Year - My ASP.NET Application</p>
        </footer>
    </div>
    @Scripts.Render("~/bundles/jquery")
    @Scripts.Render("~/bundles/bootstrap")
    @RenderSection("scripts", required: false)
</body>
</html>
I moved them above the @RenderBody() and all was fine.
    @Scripts.Render("~/bundles/jquery")
    @Scripts.Render("~/bundles/bootstrap")
    @RenderSection("scripts", required: false)
    <div class="container body-content">
        @RenderBody()
        <hr />
        <footer>
            <p>© @DateTime.Now.Year - My ASP.NET Application</p>
        </footer>
    </div>
</body>
</html>
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