Event.defaultPrevented.html

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<!DOCTYPE html>

<html>

    <head>

        <title> W3C DOM Level 3 Event Object Property: defaultPrevented </title>

        <script type="text/javascript">

            var PassTest = function()

                document.getElementById("testresult").firstChild.data = "PASS";

            var FailTest = function()

                document.getElementById("testresult").firstChild.data = "FAIL";

            var EVENT = "click";

            var TARGET;

            window.onload = function()

try

                    TARGET = document.getElementById("target");

                    TARGET.addEventListener(EVENT, TestCapture, true);

                catch(ex)

                    FailTest();

            function TestCapture(evt)

try

                    evt.preventDefault();

                    if ((evt.type == EVENT) && (evt.defaultPrevented == true))

                        PassTest();

                    else

                        FailTest();

                catch(ex)

                    FailTest();

        </script>

    </head>

    <body>

        <h4>

            Test Description:

            Event listeners can cancel default actions of cancelable event objects by invoking the Event.preventDefault()

            method, and determine whether an event has been canceled through the Event.defaultPrevented attribute.

        </h4>

        Click the hyperlink:

        <a href="http://samples.msdn.microsoft.com/ietestcenter/" id="target">http://samples.msdn.microsoft.com/ietestcenter</a>

        <p>Test passes if the word "PASS" appears below after clicking the hyperlink and the page does not navigate away.</p>

           <div>Test result: </div>

        <div id='testresult'>FAIL</div>

    </body>

</html>