查找页面<img>

var  imgs=document.getElementsByTagName("img");  for(var i = 0;imgs[i];i++){        imgs[i].setAttribute('src', 'http://www.****.com/' + (imgs[i].getAttribute('src') || ''));        imgs[i].setAttribute('style','width:100%;height: 40%;')          }

转载于:https://www.cnblogs.com/fengmingming/p/4904721.html