复制代码 代码如下:

var $horizontal = $('.horizontal_screen') ; //可自定义横屏模式提示样式

var $document = $(document) ;

var preventDefault = function(e) {

e.preventDefault();

};

var touchstart = function(e) {

$document.on('touchstart touchmove', preventDefault);

};

var touchend = function(e) {

$document.off('touchstart touchmove', preventDefault);

};

function listener(type){

if('add' == type){

//竖屏模式

$horizontal.addClass('hide');

$document.off('touchstart', touchstart);

$document.off('touchend', touchend);

}else{

//横屏模式

$horizontal.removeClass('hide');

$document.on('touchstart', touchstart);

$document.on('touchend', touchend);

}

}

function orientationChange(){

switch(window.orientation) {

//竖屏模式

case 0:

case 180:

listener('add');

break;

//横屏模式

case -90:

case 90:

listener('remove');

break;

}

}

$(window).on("onorientationchange" in window ? "orientationchange" : "resize", orientationChange);

$document.ready(function(){

//以横屏模式进入界面，提示只支持竖屏

if(window.orientation == 90 || window.orientation == -90){

listener('remove');

}

});