指定区域的图片自动按比例缩小的js代码（防止页面被图片撑破）

复制代码 代码如下:

<div id=article><img height="800" alt="" width="1280" src="https://img.qb5200.com/download-x/down/js/images/12498880470.jpg" /></div>
<script type="text/javascript" >
//缩放图片到合适大小
function ResizeImages()
{
   var myimg,oldwidth,oldheight;
   var maxwidth=550;
   var maxheight=880
   var imgs = document.getElementById('article').getElementsByTagName('img');   //如果你定义的id不是article，请修改此处

   for(i=0;i<imgs.length;i++){
     myimg = imgs[i];

     if(myimg.width > myimg.height)
     {
         if(myimg.width > maxwidth)
         {
            oldwidth = myimg.width;
            myimg.height = myimg.height * (maxwidth/oldwidth);
            myimg.width = maxwidth;
         }
     }else{
         if(myimg.height > maxheight)
         {
            oldheight = myimg.height;
            myimg.width = myimg.width * (maxheight/oldheight);
            myimg.height = maxheight;
         }
     }
   }
}
//缩放图片到合适大小
ResizeImages();
</script>

复制代码 代码如下:

function controlImg(ele,w,h){
  var c=ele.getElementsByTagName("img");
  for(var i=0;i<c.length;i++){
    var w0=c[i].clientWidth,h0=c[i].clientHeight;
    var t1=w0/w,t2=h0/h;
    if(t1>1||t2>1||w0>=600){
     c[i].width=Math.floor(w0/(t1>t2?t1:t2));
     c[i].height=Math.floor(h0/(t1>t2?t1:t2));
if(document.all){
          c[i].outerHTML='<a href="'+c[i].src+'" target="_blank" title="在新窗口查看图片">'+c[i].outerHTML+'</a>'
      }
       else{
          c[i].title="在新窗口打开图片";
          c[i].onclick=function(e){window.open(this.src)}
           }
           }
    }
 }