title: Regex to disallow all Special Chars but allow German Umlauts in jQuery?
body: <p>I would like to allow all Alphanumeric Characters and disallow all Special Characters in a RegEx. But I would like to allow German Umlauts but becouse they are Special Chars too, I can't type them in. I use this Script:</p>
  
  <pre><code>    if(website_media_description.match(/[^a-zA-Z0-9]/g)) { 
  
      alert('Found Special Char');        
  
  }
  </code></pre>
  
  <p>So when a äöüÄÖÜß is in the variable than I get the alert too. I also tryed this Script:</p>
  
  <pre><code>    if(website_media_description.match(/[^a-zA-Z0-9äöüÄÖÜß]/g)) { 
  
      alert('Found Special Char');        
  
  }
  </code></pre>
  
  <p>But this also does not work. Can someone please tell me what I am doing wrong?</p>
  
  <p>Thanks :)</p>