title: Regular expression to name
body: <p>Condition for regular expression is </p>
  
  <ol>
  <li>Only letter</li>
  <li>space is allowed only after 2 charecter is entered</li>
  <li>only one space is allowed not more then one, please help me I am new to jQuery</li>
  </ol>
  
  <p>Now I am using this one but it not works:</p>
  
  <pre><code>$('.name').keyup(function() {  
      this.value = this.value.replace(/[^A-Za-z]/g,'');    
  });
  </code></pre>