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professional-javascript-14-OnErrorExample5.htm / htm

          <title>OnError Example</title>
          <script type="text/javascript">
              window.onerror = function (sMessage, sUrl, sLine) {
                  alert("An error occurred:\n" + sMessage + "\nURL: " + sUrl + "\nLine Number: " + sLine);
                  return true;
              alert("Syntax error.";
      <body onload="nonExistentFunction()">
          <p>The syntax error on this page comes <em>after</em> the <code>onerror</code>
          event handler is defined, so the custom dialog catches it.</p>
          <p><strong>Note:</strong> This may not work in newer browsers with tighter security restrictions.</p>

(C) Æliens 20/2/2008

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