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Should Jquery code go in header or footer?

...efore </body>. If you are unable to do so due to templating issues and whatnot, decorate your script tags with the defer attribute so that the browser knows to download your scripts after the HTML has been downloaded: <script src="my.js" type="text/javascript" defer="defer"></scrip...
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Difference between declaring variables before or in loop?

...etter, a or b? From a performance perspective, you'd have to measure it. (And in my opinion, if you can measure a difference, the compiler isn't very good). From a maintenance perspective, b is better. Declare and initialize variables in the same place, in the narrowest scope possible. Don't leave...
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Why do assignment statements return a value?

... To my understanding, assignment s = "Hello"; should only cause "Hello" to be assigned to s, but the operation shouldn’t return any value. Your understanding is 100% incorrect. Can you explain why you believe this false thing? What...
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What's the “big idea” behind compojure routes?

I'm new to Clojure and have been using Compojure to write a basic web application. I'm hitting a wall with Compojure's defroutes syntax, though, and I think I need to understand both the "how" and the "why" behind it all. ...
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Covariance, Invariance and Contravariance explained in plain English?

Today, I read some articles about Covariance, Contravariance (and Invariance) in Java. I read the English and German Wikipedia article, and some other blog posts and articles from IBM. ...
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How to convert image to byte array

Can anybody suggest how I can convert an image to a byte array and vice versa? 12 Answers ...
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Insert code into the page context using a content script

...e exposed page script directly, you have to use them in the content script and communicate to the exposed page script via a special DOM CustomEvent handler, example one and two. If you don't have to use chrome.* APIs, simply inject all of your JS code in the page by adding a <script> tag as sh...
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How can I upload files asynchronously?

... With HTML5 you can make file uploads with Ajax and jQuery. Not only that, you can do file validations (name, size, and MIME type) or handle the progress event with the HTML5 progress tag (or a div). Recently I had to make a file uploader, but I didn't want to use Flash no...
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Difference between static STATIC_URL and STATIC_ROOT on Django

I am confused by static root and want to clarify things. 3 Answers 3 ...
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Omitting one Setter/Getter in Lombok

...n fields, I annotated it with @Data in order to generate all the setters and getter. However there is one special field for which I don't want to the accessors to be implemented. ...