Jquery控制图片宽度及高度 ,做到等比例缩放

 1 $(document).ready(function() {  
 2             var maxWidth = 780;  
 3             var maxHeight = 500;  
 4             var zoomTimes;  
 5             $("img").each(function(){             
 6                     var curWidth  = $(this).width();  
 7                     var curHeight = $(this).height();  
 8                     if(curWidth > maxWidth){  
 9                          $(this).width(maxWidth);  
10                          zoomTimes=curWidth/maxWidth;  
11                          $(this).height(curHeight/zoomTimes);  
12                     }else if(curHeight > maxHeight){  
13                          $(this).height(maxHeight);  
14                          zoomTimes=curHeight/maxHeight;  
15                          $(this).width(curWidth/zoomTimes);  
16                     }  
17                 });  
18         });