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# mob_condjs.js Example File

webkit/webkit-guide/js/mob_condjs.js

     /****************************************************************************
     **
     ** Copyright (C) 2015 The Qt Company Ltd.
     ** Contact: http://www.qt.io/licensing/
     **
     ** This file is part of the Qt WebKit module of the Qt Toolkit.
     **
     ** $QT_BEGIN_LICENSE:BSD$
     ** You may use this file under the terms of the BSD license as follows:
     **
     ** "Redistribution and use in source and binary forms, with or without
     ** modification, are permitted provided that the following conditions are
     ** met:
     **   * Redistributions of source code must retain the above copyright
     **     notice, this list of conditions and the following disclaimer.
     **   * Redistributions in binary form must reproduce the above copyright
     **     notice, this list of conditions and the following disclaimer in
     **     the documentation and/or other materials provided with the
     **     distribution.
     **   * Neither the name of The Qt Company Ltd nor the names of its
     **     contributors may be used to endorse or promote products derived
     **     from this software without specific prior written permission.
     **
     **
     ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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     ****************************************************************************/
     window.onload = function() {
         var msg = 'JavaScript thinks you are viewing this page with a ';
         if ( isDesign('desktop') ) {
             msg += 'full desktop browser';
         }
         else if ( isDesign('touch') ) {
             msg += 'touch-based mobile browser';
         }
         else if ( isDesign('mobile') ) {
             msg += 'non-touch mobile browser';
         }
         else {
             msg = window.styleMedia.matchMedium;
         }
         document.getElementById('js').innerHTML = msg;
     };

     function isDesign(str) {
         var design;
         if (matchesMedia('only screen and (min-device-width: 481px)')) {
             design = 'desktop';
         }
         else if (matchesMedia('only screen and (max-device-width: 480px)')) {
             design = 'touch';
         }
         else if (matchesMedia('handheld')) {
             design = 'mobile';
         }
         return str == design;
     }

     function matchesMedia(query) {
         if (!!window.matchMedia)
             return window.matchMedia(query).matches;
         if (!!window.styleMedia && !!window.styleMedia.matchMedium)
             return window.styleMedia.matchMedium(query);
         if (!!window.media && window.media.matchMedium)
             return window.media.matchMedium(query);
         return false;
     }