title: prevent user to type non-english characters
body: <p>I am using this one to prevent user to type special chars.</p>
  
  <pre><code>String.prototype.isText = function () {return /^[\w\s]*$/.test(this)}
  </code></pre>
  
  <p>How can i change it to prevent users to type non-english words ? (only apostrophe and <code>&amp;</code> will be accepted as special char)</p>