<Meta name="screen-orientation" content="portrait"><!-- uc强制竖屏 -->
<Meta name="x5-orientation" content="portrait"><!-- QQ强制竖屏 -->
window.addEventListener("onorientationchange" in window ? "orientationchange" : "resize",hengshuping,false); function hengshuping() { if (window.orientation == 90 || window.orientation == -90) { //横屏 } else { //竖屏 } }