title: Regular Expression For At Least One Number
body: <p>How would you create a regular expression for a value that should contain at least one number? The user can enter any special character, letter etc., but should contain at least one number.</p>
  
  <p>I tried with <code>pattern="[\w+]{6,20}"</code> and</p>
  
  <pre><code>(?=.*\d)(*[a-z])(*[A-Z]).{6,20}
  </code></pre>
  
  <p>Neither are working.</p>