title: Regular expression to Allow starting letters and then numbers or letters
body: <p>I need regular Expression which should start with letters only and later it can contain numbers or letters.But starting should contain letters only. I have used</p>
  
  <pre><code>^[a-zA-Z]*[a-zA-Z0-9]+$
  </code></pre>
  
  <p>But it is not working. Can anyone please help me out?</p>