title: prevent jquery function run on all classes with same name
body: <p>Im trying to run an alert box, but only on the element Im clicking. since I have a couple of elements with the same name.</p>
  
  <p>It worked on a JSfiddle I created but not when Im running it on the site. then the alert box popping up as many elements i have with the same name.</p>
  
  <p>Any ideas ?</p>
  
  <pre><code>$('insta').click(function(){alert("alert",this) })
  </code></pre>