title: regex error - nothing to repeat in jquery
body: <p>I tried a regular expression to validate email id. When I use this expression:</p>
  
  <pre><code>var emailxP = /^(\w+([0-9-+.']\w+)*+\@+\w+\.([\\a-z]{2,3})(\.\w+))$/;
  </code></pre>
  
  <p>the expression is not working 
  the chrome is showing </p>
  
  <pre><code>ncaught SyntaxError: Invalid regular expression: /^(\w+([0-9-+.']\w+)*+\@+\w+\.([\\a-z]{2,3})(\.\w+))$/: Nothing to repeat 
  </code></pre>
  
  <p>can please tell me what happen in there.</p>
  
  <p>Thank you.</p>