title: Password Validation with Sequential Letters and Numbers - RegEx
body: <p>To have customer accounts more secure, a well crafted password is good practice. This is my Regular Expression string for password validation. </p>
  
  <pre><code>/^(?=.*[0-9])(?!.*?\d{3})(?=.*[a-zA-Z])(?!.*?[a-zA-Z]{3})(?=.*[~!@#$%^&amp;*()+-?])([a-zA-Z0-9~!@#$%^&amp;*()+-?]{8,})$/
  </code></pre>
  
  <p>Represents: </p>
  
  <ul>
  <li>8 or more characters. </li>
  <li>Uppercase letter A-Z </li>
  <li>Lowercase letters a-z </li>
  <li>Special characters ~!@#$%^&amp;*()+-?</li>
  <li>What is this Regular Expression function for this?: <strong>Must not contain up to 3 sequential letters and/or numbers.</strong> </li>
  </ul>
  
  <p>Having numbers and/or letters in order 3 or more sequential is not OK.</p>
  
  <p>Example: </p>
  
  <p>Not OK = efg123!$, abcd567%, xyz789^&amp;, #hijk23456<br>
  <strong>OK</strong> = ryiiu562@, erty745#, gjnfl45566^</p>
  
  <p>Thank you</p>