title: Check for username while typing in field?
body: <p>I am fluent with HTML, and mostly PHP.</p>
  
  <p>I can do the scanning part with PHP.. I'm just not sure how to call a function in PHP with JavaScript, because I don't know JavaScript.</p>
  
  <p>My PHP code will connect to my MySQL database and see if the text currently in the textbox (Not clicked enter yet, still typing) is in the database..</p>
  
  <p>Do you know how to do this, or at least know a link that tells you how to do it?</p>