JavaScript to determine the horizontal and vertical screen mode of iPhone/Android phones

The iPhone can use the onorientationchange event, but the android onresize event will be triggered multiple times even if it is not rotated. I checked a lot of information and concluded the following: function orientationchange (){ Switch (window. Orientation ){ Case 0: // portrait Case 180: // upside-down portrait // JavaScript to setup portrait View Break; Case-90: // landscape: turned 90 degrees counter-clockwise Case 90: // landscape: turned 90 degrees clockwise // JavaScript to steup landscape View Break; } Window. addeventlistener ("onorientationchange" in window? "Orientationchange": "resize", orientationchange, false );