关于javascript 操作 淘宝手机页面元素 iframe 跨域操作

Question

在页面 iframe 过来的 会因为跨域而操作不了 这个页面吗

执行报错

Uncaught DOMException: Failed to read 
the 'contentDocument' property from 'HTMLIFrameElement':
Blocked a frame with origin "http://localhost:3000" from accessing a cross-origin frame.(…)

求大神指导

Answer 1

You can't. XSS protection. Cross site contents can not be read by javascript. No major browser will allow you that. I'm sorry, but this is a design flaw, you should drop the idea.

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Answer 2

浏览器同源策略不容许你这样做,试试变通的办法。
如p3p，jsonp等。