title: REGEX : Must include only letter,number or character
body: <p>I have the following REGEX</p>
  <pre><code>/^(?!.* )(?=.*[!@#$\.%^&amp;])(?=.*\d)(?=.*[A-Za-z])$/
  </code></pre>
  <p>it should not allow white space and contains a letter a digit and a character.</p>
  <p>But I would like to have the following</p>
  <p>do not contain space, and contains any of <code>[!@#$\.%^&amp;]</code>, <code>digits</code> and character, so <code>aaaaaaaa</code> or <code>!!!!!!!!</code> would work.</p>
  <p>but I can7t find how to validate the lot</p>