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.

globalization.isDayLightSavingsTime

Indicates whether daylight savings time is in effect for a given date using the client's time zone and calendar.

navigator.globalization.isDayLightSavingsTime(date, successCallback, errorCallback);

Description

Indicates whether or not daylight savings time is in effect to the successCallback with a properties object as a parameter. That object should have a dst property with a Boolean value. A true value indicates that daylight savings time is in effect for the given date, and false indicates that it is not.

The inbound parameter date should be of type Date.

If there is an error reading the date, then the errorCallback executes. The error's expected code is GlobalizationError.UNKNOWN\_ERROR.

Supported Platforms

Amazon Fire OS
Android
BlackBerry WebWorks 5.0+
iOS
Windows Phone 8

Quick Example

During the summer, and if the browser is set to a DST-enabled timezone, this should display a popup dialog with text similar to dst: true:

navigator.globalization.isDayLightSavingsTime(
    new Date(),
    function (date) {alert('dst: ' + date.dst + '\n');},
    function () {alert('Error getting names\n');}
);

Full Example

<!DOCTYPE HTML>
<html>
  <head>
    <title>isDayLightSavingsTime Example</title>
    <script type="text/javascript" charset="utf-8" src="cordova.js"></script>
    <script type="text/javascript" charset="utf-8">

    function checkDayLightSavings() {
      navigator.globalization.isDayLightSavingsTime(
        new Date(),
        function (date) {alert('dst: ' + date.dst + '\n');},
        function () {alert('Error getting names\n');}
      );
    }

    </script>
  </head>
  <body>
    <button onclick="checkDayLightSavings()">Click for daylight savings</button>
  </body>
</html>