Forum: Ruby execute_async_script v/s execute_script in Selenium web-driver

In Selenium web-driver we know web-driver has 2 methods -

(WebDriver::Element, ...) execute_async_script(script, *args) and

(WebDriver::Element, ...) execute_script(script, *args).

Now with the help of any code where "*args" would be
web-driver::element, Can  any explain the differences between them? In
what situations we must use what ?


Thanks

The documentation is here: 
http://selenium.googlecode.com/svn/trunk/docs/api/...

Basically the async version doesn't wait for a return, your script 
continues to execute.