title: Equivalent of ASP's .Contains method
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/1789945/javascript-string-contains">JavaScript: string contains</a><br>
    <a href="https://stackoverflow.com/questions/3480771/jquery-how-to-see-if-string-contains-substring">Jquery: How to see if string contains substring</a>  </p>
  </blockquote>
  
  
  
  <p>In ASP .NET C# I use:</p>
  
  <pre><code>string aa = "aa bb";
  if (aa.Contains("aa"))
     { 
         //Some task       
     }
  </code></pre>
  
  <p>I want to same thing in client side means in JQuery. Something like below:</p>
  
  <pre><code>var aa = "aa bb";
  if(aa. -----want help here){
  }
  </code></pre>
  
  <p>Is there any method to do this?</p>