Search field

Hi,

I would like to ask one thing.

My plan: I would like to add a simple filter for the table. In my plan: i’m create a simple form, with javascript and that is add value for the search field.
My js is working, but the table search don’t run, just when i click the search field and type plus one character or space.

How can i start the table search, after my script is add the value?

Thx,
Best rtegards,
Tamas