title: jQuery check if input text contains specific text
body: <p>If input text field contains "<strong>@twitter.com</strong>", would like to append text to <code>div</code>.</p>
  
  <p>Currently have the following but only works when <code>test=151516058@twitter.com</code>, any suggestions?</p>
  
  <pre><code>var test = jQuery('input[name$="user_email"]').val(); 
    if(test == "@twitter.com"){
       jQuery(".iump-clear").append('&lt;div&gt;Please update your email address&lt;/div&gt;');
    }
  
  &lt;input type="text" name="user_email" value="151516058@twitter.com"&gt;
  &lt;div class="iump-clear"&gt;&lt;/div&gt;
  </code></pre>