title: JQuery Blur How to Get Current Control ID
body: <p>I have a GridView of ASP.NET with Template Field containing textbox.</p>
  
  <p>A javascript code calling ajax to validate the user input is correct or not. I wish to detect this by the cursor leaves the textbox, which seems like JQuery.Blur will do.</p>
  
  <p>The question is: how to get the control ID that the cursor blur from?</p>