已采納回答 / xiaopihai988
?var objBigBox = document.getElementById("big-box");var objBigBoxImage = objBigBox.getElementsByTagName("img")[0];document.getElementById("big-box").getElementsByTagName("img")[0]
2016-05-01
x/(b-a)=?/(d-c)這個(gè)也太牽強(qiáng)了吧,硬往圖片比例結(jié)果上湊,只要結(jié)果不管過程啊
2016-03-29