... oh, hmm... I actually want to mimic a sticky button, when its positioned absolute, when I scroll down, it doesn't sticky ... hmm – Jiew Meng Mar 6 '11 at 10:49 ...

... say you have an object of an unknown type in Java, and you would like to call a 'doSomething' method on it if one exists. Java's static typing system isn't really designed to support this unless the object conforms to a known interface, but using reflection, your code can look at the object and fin...

... So I found it out by myself. It is actually a pretty simple but powerful concept. It has to do with code reuse as in the example below. Basically, the idea is to extract common and / or context specific chunks of code in order to clean up the models and avoid them...

...as JSON. Part of this application requires the client to upload a file (usually an image) as well as information about the image. ...

... Cache-Control: no-cache is generally used in a request header (sent from web browser to server) to force validation of the resource in the intermediate proxies. If the client doesn't send this request to the server, intermediate proxies will return a copy o...

...et machine, but instead read and executed by some other program (which normally is written in the language of the native machine). For example, the same "+" operation would be recognised by the interpreter at run time, which would then call its own "add(a,b)" function with the appropriate arguments,...

... design a web page with a banner and an iframe. I hope the iframe can fill all the remaining page height and be resized automatically as the browser is resizing. Is it possible to get it done without writing JavaScript code, only with CSS? ...

When you limit the number of rows to be returned by a SQL query, usually used in paging, there are two methods to determine the total number of records: ...

... It's simpler than I initially thought.. Basically you have a page that does nothing, until the data you want to send is available (say, a new message arrives). Here is a really basic example, which sends a simple string after 2-10 seconds. 1 in 3 ch...

...u wanted a function on Button from the first example to hook up the click callback to a DOM event, the following are all valid ways of doing that: var myButton = { ... // As above hookEvent(element) { // Use bind() to ensure 'this' is the 'this' inside click() element.addEventListener('...