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Textarea limitazione caratteri

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  1. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
  2. "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
  3.  
  4. <html xmlns="http://www.w3.org/1999/xhtml">
  5. <head>
  6.     <title>Limit Number of Characters in a TextArea</title>
  7.         <script type='text/javascript'
  8.    src='http://jqueryjs.googlecode.com/files/jquery-1.3.2.min.js'></script>
  9.     <script type='text/javascript'>
  10.         $(document).ready(function() {
  11.             $('#note').keyup(function() {
  12. 	            var max=140;
  13.                 var len = this.value.length;
  14.                 if (len >= max) {
  15.                     this.value = this.value.substring(0, max);
  16.                 }
  17.                 $('#charLeft').text(max - len);
  18.             });
  19.         });
  20.     </script>
  21. </head>
  22. <body>
  23. <textarea id="note" cols="20" rows="8"></textarea><br/>
  24. (Maximum characters: 140)<br/>
  25. <span id="charLeft"> </span>  Characters left
  26. </body>
  27. </html>
  28.  

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