# [InterfaceOrientation]() 获取应用的横竖屏信息 ### 方法: - [window.orientation](http://www.dcloud.io/docs/api/zh_cn/interface-orientation.shtml#plus.InterfaceOrientation.window.orientation): 获取当前设备横竖屏状态 ### 事件: - [orientationchange](http://www.dcloud.io/docs/api/zh_cn/interface-orientation.shtml#plus.InterfaceOrientation.orientationchange): 当屏幕旋转时的通知事件 # [window.orientation]() 获取当前设备横竖屏状态 ~~~ var screen_orientation = window.orientation; ~~~ ### 参数: 无 ### 返回值: number : 0 正常方向 -90 屏幕顺时钟旋转90度 90 屏幕逆时针旋转90度 180 屏幕旋转180度 ### 平台支持: - Android - 2.2+ (支持): 支持 - iOS - 4.3+ (支持): 支持 # [orientationchange]() 当屏幕旋转时的通知事件 ~~~ document.addEventListener("orientationchange", orientationchangeCB); ~~~ ### 说明: orientationchangeCB 类型 ### 平台支持: - Android - 2.2+ (支持): 支持 - iOS - 4.3+ (支持): 支持 ### 示例: ~~~ <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width,initial-scale=1.0,user-scalable=no"> <title>Orientation Example</title> </head> <body style="background:#0f0" > <button onclick="plus.webview.currentWebview().close()">Close</button><br/> <button onclick="getOrientation()">Get orientation</button> <div id="output"></div> <script type="text/javascript" > function updateOrientation() { var displayStr = "Orientation : "; switch(window.orientation) { case 0: displayStr += "Portrait"; break; case -90: displayStr += "Landscape (right, screen turned clockwise)"; break; case 90: displayStr += "Landscape (left, screen turned counterclockwise)"; break; case 180: displayStr += "Portrait (upside-down portrait)"; break; } document.getElementById("output").innerHTML = displayStr; console.log(displayStr); } //Get initialize orientation. document.addEventListener("orientationchange",updateOrientation,false); window.addEventListener("orientationchange",updateOrientation,false) function getOrientation(){ var str="Orientation: "+window.orientation; console.log(str); alert(str); } </script> </body> </html> ~~~