问题描述
什么是Chrome的'top.document'，在FF和IE8中都是有效的。
在Chrome中，'top'有效，top.length返回2 （帧）...应该如此。但是top.document返回'undefined'。需要获得一个元素。 top.document.getElementById（id）在FF和IE8中都可以很好地工作。
在此先感谢您，
swk
我知道我的答案迟到了，但这一直让我发疯，而且这个问题似乎对我来说简直就是因为我的页面并没有实际托管。这只是一个铺设在网络文件夹中的原型。如果该页面托管在服务器上，那么它可以正常工作。
甚至更糟糕的是，Chrome在引发安全异常之后不会评估任何内容。我终于弄清楚为什么我看不到任何全局变量。
至少我可以解决第二个问题，在try / catch块中触及顶部，以便任何其他Javascript仍会评估。无论如何，这对我来说就足够了，用于原型。
What is Chrome's equivalent of 'top.document', valid in both FF and IE8.
In Chrome, 'top' is valid, top.length returns 2 (frames)...as it should. But top.document returns 'undefined'. Needed to get an element. top.document.getElementById(id) works perfectly in both FF and IE8.
Thanks in advance,swk
I know my answer's late, but this has been driving me crazy, and the issue, it seems for me anyway, is simply because my page wasn't actually hosted. It was just a prototype laying in a network folder. If the page is hosted on a server, it works fine.
What even made it worse, is that Chrome wouldn't evaluate anything after that security exception was thrown. Took me forever to figure out why I couldn't see any of my global variables.
I was able to get around the second issue at least, by surrounding the stuff that touches top in a try/catch block so that any other Javascript would still evaluate. This is enough for me, for prototype purposes, anyway.
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