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You should now have an idea of what jQuery is and why you're using it, so let's put everything together and construct a basic HTML page with a bit of JavaScript goodness.
<!DOCTYPE html>
<html>
<head>
<title>Adding JavaScript to a HTML page</title>
<meta charset="utf-8">
<!-- CSS to go here -->
<script type="text/javascript" src="http://ajax.googleapis.com
/ajax/libs/jquery/1/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {