移動端--判斷橫豎屏

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(function(){var supportOrientation = (typeof window.orientation === ‘number‘ &&typeof window.onorientationchange === ‘object‘);var init = function(){var htmlNode = document.body.parentNode,orientation;var updateOrientation = function(){if(supportOrientation){orientation = window.orientation;switch(orientation){case 90:case -90:orientation = ‘landscape‘;break;default:orientation = ‘portrait‘;break;}}else{orientation = (window.innerWidth > window.innerHeight) ? ‘landscape‘ : ‘portrait‘;}htmlNode.setAttribute(‘class‘,orientation);};if(supportOrientation){window.addEventListener(‘orientationchange‘,updateOrientation,false);}else{//監聽resize事件window.addEventListener(‘resize‘,updateOrientation,false);}updateOrientation();};window.addEventListener(‘DOMContentLoaded‘,init,false);})();

 

移動端--判斷橫豎屏