html5 API有这个参数 Screen Orientation API
可以看w3c定义的规范 The Screen Orientation API
<!– UC强制竖屏 –>
<meta name=”screen-orientation” content=”portrait”>
<!– QQ强制竖屏 –>
<meta name=”x5-orientation” content=”portrait”>
<!– UC强制全屏 –>
<meta name=”full-screen” content=”yes”>
<!– QQ强制全屏 –>
<meta name=”x5-fullscreen” content=”true”>