[英]how to access content from iframe in main window
How to access content from iframe in main window? 如何在主窗口中从iframe访问内容?
I am using an iframe to post form to different domain, and I want to access return data from the iframe which I can append to my main window. 我正在使用iframe将表单发布到其他域,并且我想访问iframe的返回数据,并将其附加到主窗口中。
It gives me error "access denied" when I try to access iframe elements. 当我尝试访问iframe元素时,出现错误“访问被拒绝”。
You can't access one from the other if the iframe
and the main page have a different domain. 如果
iframe
和主页具有不同的域,则无法访问彼此。
You can exchange string data between the two with window.postMessage
for modern browsers(IE8+) or using the window.name
hack if you have to support older browsers. 您可以使用现代浏览器(IE8 +)的
window.postMessage
在两者之间交换字符串数据,或者,如果必须支持较旧的浏览器,则可以使用window.name
hack。
Another option is to post to the other domain as you do, but giving an id
. 另一种选择是像您一样发布到另一个域,但要提供一个
id
。 Then poll with a setInterval
from the main page useing this id
with a JSONP
to get the response. 然后从主页使用
setInterval
轮询,并使用此id
和JSONP
来获取响应。
If they are on different subdomains, but you have control over both domains, the solution is to add the following into a script tag: 如果它们在不同的子域上,但是您可以控制两个域,则解决方案是将以下内容添加到脚本标记中:
document.domain = 'example.com';
Then you can chat between those iframes. 然后,您可以在这些iframe之间聊天。
<script>$("#frameDemo").contents().find("a").css("background-color","#BADA55");</script>
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