JQuery 获得html元素被缩放的倍数
/* * 获取el被缩放的倍数 */getZoomLeve : function(el) {// 标示缩放的css属性var zoomPer, undefinedPer = 'none';if(S.UA['firefox']) {zoomPer = '-moz-transform';} else if(S.UA['ie']) {if(S.UA['ie'] == 9) {zoomPer = '-ms-transform';} else {zoomPer = 'zoom';undefinedPer = 'normal';}}else {zoomPer = '-webkit-transform';}var ret = 1;// 先计算元素在Iframe内部被缩放的大小while(el.ownerDocument != document) {ret *= getZoom(el);var $ifrs = $('iframe'),curWin = el.ownerWindow,ifr;S.each($ifrs, function(item) {try{if(item.contentWindow == curWin) {ifr = item;return false;}}catch(e) {// 捕获跨域访问的错误}});if(ifr) {el = ifr;} else {break;}}ret *= getZoom(el);function getZoom(htmlEl) {var ret = 1;// 这里的add将el的缩放也计算在内S.each($(htmlEl).parents().add($(htmlEl)),function(el) {if($(el).css(zoomPer) && $(el).css(zoomPer)!=undefinedPer) {if(S.UA['ie'] && S.UA['ie']<9) {ret *= el.style.zoom;} else {var temp = $(el).css(zoomPer),start = temp.indexOf('(') + 1,end = temp.indexOf(',');ret *= temp.substring(start, end);}}});return ret;}return ret;}代码中的S是KISSY的缩写。