PhoneGap-----Accelerometer

Everything in the code!!!!

[html]
<!DOCTYPE html>
<head>
<title>Acceleration Example</title>
<script type="text/javascript" charset="utf-8" src="cordova.js"></script>
<script type="text/javascript" charset="utf-8">
    var watchID = null;
    document.addEventListener("deviceready",onDeviceReady,false);

    function onDeviceReady()
    {
        startWatch();
    }

    function startWatch()
    {
        var options = {frequency:3000};
        watchID = navigator.accelerometer.watchAcceleration(onSuccess,onError,options);
    }

    function stopWatch()
    {
        if(watchID)
        {
            navigator.accelerometer.clearWatch(watchID);
            watchID = null;
        }
    }

    function onSuccess(acceleration)
    {
        var element = document.getElementById('accelerometer');
        element.innerHTML = 'Acceleration X: ' + acceleration.x + '<br />' +
                            'Acceleration Y: ' + acceleration.y + '<br />' +
                            'Acceleration Z: ' + acceleration.z + '<br />' +
                            'Timestamp: '      + acceleration.timestamp + '<br />';
    }

    function onError()
    {
        alert('oooops!');
    }

</script>
</head>
<body>
    <div id="accelerometer">Waiting for accelerometer...</div>
    <button onClick="stopWatch();">Stop Watching</button>
</body>
</html>

<!DOCTYPE html>
<head>
<title>Acceleration Example</title>
<script type="text/javascript" charset="utf-8" src="cordova.js"></script>
<script type="text/javascript" charset="utf-8">
    var watchID = null;
document.addEventListener("deviceready",onDeviceReady,false);

function onDeviceReady()
{
  startWatch();
}

function startWatch()
{
  var options = {frequency:3000};
  watchID = navigator.accelerometer.watchAcceleration(onSuccess,onError,options);
}

function stopWatch()
{
  if(watchID)
  {
   navigator.accelerometer.clearWatch(watchID);
   watchID = null;
  }
}

function onSuccess(acceleration)
{
  var element = document.getElementById('accelerometer');
  element.innerHTML = 'Acceleration X: ' + acceleration.x + '<br />' +
                      'Acceleration Y: ' + acceleration.y + '<br />' +
       'Acceleration Z: ' + acceleration.z + '<br />' +
       'Timestamp: '      + acceleration.timestamp + '<br />';
}

function onError()
{
  alert('oooops!');
}

</script>
</head>
<body>
    <div id="accelerometer">Waiting for accelerometer...</div>
    <button onClick="stopWatch();">Stop Watching</button>
</body>
</html>

补充：web前端 , HTML 5 ,