问题描述
是否有访问从外部code PDF文件存在JavaScript对象的方式，我想访问嵌入在Web表单作为一个IFrame PDF文件JS变量，我想从表单JS code访问这些变量。
Is there a way to access Javascript objects exist in a PDF file from an external code, I'm trying to access JS variables in a PDF file that is embedded in a web form as an IFrame, I would like to access these variables from the webform JS code.
推荐答案
这是可能的，如果PDF允许它。我写了一本书的PDF和它包含了关于HTML和PDF之间建立的Javascript通信部分。你可以在这里找到本节的文本：的
It's possible if the PDF allows it. I've written a book about PDF and it contains a section about establishing Javascript communication between HTML and PDF. You can find the text of this section here: http://www.javabeat.net/2011/04/javascript-communication-between-html-and-pdf-in-itext/
请注意，这并不对所有的OSS系统工作。该PDF需要访问它的主机容器，你需要使用一个消息容器。
Note that this doesn't work on all OSSs. The PDF needs to access its host container and you need to use a message container.
如果您的PDF没有一个的onMessage（）函数也不是一个消息处理程序，您无法建立任何通信。
If your PDF doesn't have an onMessage() function nor a message handler, you can't establish any communication.
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