jQuery - Pro Tip #1
1. Use CDN (content delivery network)
Go to: https://developers.google.com/speed/libraries/devguide
and pick a version of jQuery you're interested in:
e.g.
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
2. but don't forget to fallback onto the local server in case the CDN isn't available with:
<script> window.jQuery || document.write("<script src='js/jquery.js'></script>
3. putting it all together:
<html>
<head>
<script src="//ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"</script>
<script>
window.jQuery || document.write("<script src='js/jquery.js'></script>");
</script>
</head>
</html>
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