orientation change

orientation.js

/*
     **设备旋转提示
     */
    $(function(){
        var bd = $(document.body);
        window.addEventListener('onorientationchange' in window ? 'orientationchange' : 'resize', _orientationchange, false);
        function _orientationchange() {
            scrollTo(0, 1);
            switch(window.orientation){
                case 0:		//横屏
                    bd.addClass("landscape").removeClass("portrait");
                    init_pageH();
                    break;
                case 180:	//横屏
                    bd.addClass("landscape").removeClass("portrait");
                    init_pageH();
                    break;

                case -90: 	//竖屏

                    init_pageH();
                    //bd.addClass("portrait").removeClass("landscape");
                    if($(".m-video video")[0]!=undefined && $(".m-video video")[0].paused){
                        alert("请竖屏查看页面，效果更佳");
                    }else{
                        alert("请竖屏查看页面，效果更佳");
                    }

                    break;
                case 90: 	//竖屏
                    init_pageH();
                    bd.addClass("portrait").removeClass("landscape");
                    if($(".m-video video")[0].paused)
                        alert("请竖屏查看页面，效果更佳");
                    break;
            }
        }
        $(window).on('load',_orientationchange);
    })