JavaScript & Ajax

The javascript location.search propery sets / returns the query portion of a URL, including the question mark (?). This means that if we put <a onclick="location.search='this is a test'">test</a> in a file named our_file.html, the URL (our_file.html) will be replaced with our_file.html?this is a test after a click on the link. Having arrived at our_file.html?this is a test, we can go back to our_file.html by using the browser's history (back) button. The content of our_file.html?this ...

In July 2010 an enhancement to the YouTube video embed capability became available through a new embed code style. This style uses <iframe> and looks like this:

<iframe src="http://www.youtube.com/embed/VIDEO_ID?" frameborder="0"></iframe>

After VIDEO_ID? we can add the normal parameters, like this:

<iframe src="http://www.youtube.com/embed/VIDEO_ID?start=0&amp;autoplay=1&amp;rel=0&amp;showinfo=0&amp;autohide=0&amp;modestbranding=1&amp;vq=large"

...

In non-IE except Google Chrome, we can call functions from inside a select box by putting things like the following in the options:
<option value="bla" onclick="some_function()"></option>
<option value="bla" onclick="window.open('http://www.google.com')"></option>
etc.

This is not possible in IE and Google Chrome. In an earlier attempt to solve the problem, I created a script based on the idea that ...

While surfing on the Internet I found this page on how to pass data from one page to another. After a while, I realized that the script used on the page actually contains a technique (implicitly) for deferring document.write. Just for the fun of it, I modified the script so as to have some easy ways of dynamically inserting internal and external content into a given div via document.write. Here it is:

Code:

<script type="text/javascript">
function HttpRequest(url){
var pageRequest

...

The 'iframe shim technique' lets us overlay a div over windowed elements such as flash objects, select boxes and applets. The trick is to have the div accompanied by an iframe that must have exactly the same size and position as the div, whose z-index must be higher than the iframe's z-index. The windowed element itself must have a lower z-index and the iframe should have a background-color. Here's an example of how to have a div overlay a flash object:

<iframe style="position: ...