title: Regular expression for should NOT be numbers only and must allow all characters including line breaks
body: <p>I am trying to write regular expression for should NOT be numbers only and must allow all characters  including line breaks.</p>
  
  <p>I tried the following cases:</p>
  
  <ol>
  <li><p><code>/[^0-9]/g;</code></p>
  
  <p>In this case, if I enter line break it's not working then tried like below</p></li>
  <li><p><code>/^((?!www\.).)*$/</code></p>
  
  <p>In this case, if I enter like this</p>
  
  <pre><code>45454545
  45454545
  dfdfdfdfdfdf
  </code></pre>
  
  <p>It's not working. I think here it is matching only in one line and not in entire paragraph.</p></li>
  </ol>
  
  <p>Could you please tell me the regular expression for this?</p>