license: Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

     Unless required by applicable law or agreed to in writing,
     software distributed under the License is distributed on an
     "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
     KIND, either express or implied.  See the License for the
     specific language governing permissions and limitations
     under the License.

Acceleration

Contains Accelerometer data captured at a specific point in time.

Properties

x: Amount of acceleration on the x-axis. (in m/s^2) (Number)
y: Amount of acceleration on the y-axis. (in m/s^2) (Number)
z: Amount of acceleration on the z-axis. (in m/s^2) (Number)
timestamp: Creation timestamp in milliseconds. (DOMTimeStamp)

Description

This object is created and populated by Cordova, and returned by an Accelerometer method. The x, y, z acceleration values include the effect of gravity (9.81 m/s^2), so at when a device is lying flat on a table facing up, the value returned should be x=0, y=0, z=9.81.

Supported Platforms

Android
BlackBerry WebWorks (OS 5.0 and higher)
iOS
Windows Phone 7 and 8
Bada 1.2 & 2.x
webOS
Tizen
Windows 8

Quick Example

function onSuccess(acceleration) {
    alert('Acceleration X: ' + acceleration.x + '\n' +
          'Acceleration Y: ' + acceleration.y + '\n' +
          'Acceleration Z: ' + acceleration.z + '\n' +
          'Timestamp: '      + acceleration.timestamp + '\n');
};

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

navigator.accelerometer.getCurrentAcceleration(onSuccess, onError);

Full Example

<!DOCTYPE html>
<html>
  <head>
    <title>Acceleration Example</title>

    <script type="text/javascript" charset="utf-8" src="cordova-2.8.0.js"></script>
    <script type="text/javascript" charset="utf-8">

    // Wait for Cordova to load
    //
    document.addEventListener("deviceready", onDeviceReady, false);

    // Cordova is ready
    //
    function onDeviceReady() {
        navigator.accelerometer.getCurrentAcceleration(onSuccess, onError);
    }

    // onSuccess: Get a snapshot of the current acceleration
    //
    function onSuccess(acceleration) {
        alert('Acceleration X: ' + acceleration.x + '\n' +
              'Acceleration Y: ' + acceleration.y + '\n' +
              'Acceleration Z: ' + acceleration.z + '\n' +
              'Timestamp: '      + acceleration.timestamp + '\n');
    }

    // onError: Failed to get the acceleration
    //
    function onError() {
        alert('onError!');
    }

    </script>
  </head>
  <body>
    <h1>Example</h1>
    <p>getCurrentAcceleration</p>
  </body>
</html>