天猫双11领优惠劵.. 自行滚动到页面底部 http://www.tmall.com/wow/act/14931/1111

test1111.js

var it = document.getElementsByClassName('mui-act-item-yhqbtn');
var i = 0;
function get(){
  if(it.length <= i) return;
  it[i++].click();
  var c = document.getElementsByClassName('mui-dialog-close')[0];
  c && c.click();
  setTimeout(function(){get(); console.log(i)}, 500);
} 

get();