<div> ? ?<p>hahahah</p> ? ?<p>hahahah</p> ? ?<p>hahahah</p>?<p>hahahah</p><p>hahahah</p></div>??<script>
????var?ps=document.getElementsByTagName("p");
????for?(?var?i?in?ps){
????????ps[i].style.backgroundColor="red";
????}
</script>控制臺打印會報錯，why?
for in遍歷數組控制臺出錯，為什么？
慕粉3782079
2016-09-18 14:52:05