图片(img标签)大小自适应
1 $(function(){ 2 var myimg,oldwidth,oldheight; 3 var maxwidth=249; 4 var maxheight=187; 5 var imgs = document.getElementsByTagName('img'); 6 7 for(i=0;i<imgs.length;i++){ 8 myimg = imgs[i]; 9 10 if(myimg.width > myimg.height) 11 { 12 if(myimg.width > maxwidth) 13 { 14 oldwidth = myimg.width; 15 myimg.height = myimg.height * (maxwidth/oldwidth); 16 myimg.width = maxwidth; 17 } 18 }else{ 19 if(myimg.height > maxheight) 20 { 21 oldheight = myimg.height; 22 myimg.width = myimg.width * (maxheight/oldheight); 23 myimg.height = maxheight; 24 } 25 } 26 } 27 })