This object, simply put, is a string which holds everything following the question mark in a page (including that question mark.) For instance, with the above URL, the window.location.search property would have the value "?adfjwa4n=yes". How can you use this information?
First, you need to send the information. Here's some sample code:
Try it out here. You can change the text to whatever you want, and it will show up as you typed it in the next page.