title: Jquery function when a textbox loses focus
body: <p>I have textbox that I want to run some jquery when the textbox loses focus, so after the user clicks out of the text box.</p>
  
  <p>I have tried to do this</p>
  
  <pre><code>$("#textbox").focusout(function () {
      alert("hello");
  
  });
  </code></pre>
  
  <p>but I get an error saying Object doesn't support this property or method.</p>
  
  <p>How can I do this then?</p>