JavaScript方式检测横屏

window.orientation:获取屏幕旋转的方向window.addEventListener("resize", ()=>{    if (window.orientation === 180 || window.orientation === 0) {         console.log('竖屏');    };    if (window.orientation === 90 || window.orientation === -90 ){         console.log('横屏');    }  });

CSS方式检测横屏

@media screen and (orientation: portrait) {  /*竖屏...*/} @media screen and (orientation: landscape) {  /*横屏...*/}