Using Javascript variable in a query?

[Moron]

There are a bazillion javascript dropdown menus out there and I'm going to be using one. My question is, how do I use a variable, selected by a Javascript dropdown, in a query?

 

In specific, this will be for employee paystubs online. They'll select their pay period ending date from the menu, then the query will be ran using that date in the WHERE statement.

 

Thanks!

 

 

[trq]

The variable will need to be submitted via either POST, GET or by using some form of Ajax back to the server so php can use it in a query.

[Moron]

The variable will need to be submitted via either POST, GET or by using some form of Ajax back to the server so php can use it in a query.

 

That's what I assumed, but I can't seem to find examples anywhere.