Failed to read the ‘contentDocument‘ property from ‘HTMLIFrameElement‘: Blocked a frame with origin "null" from accessing a frame with origin "null". Protocols, domains, and ports must match.
不想说什么，知道跨域就可以了
本地跨域操作iframe的提示,布布扣,bubuko.com
原文：http://my.oschina.net/freax/blog/305164