如果您查看结果窗格中的小提琴，您会注意到它实际上是一个指向不同域的 IFRAME，这意味着内置安全性将启动，通常会阻止访问父窗口。
例如这个小提琴： http://jsfiddle.net/jomanlk/y9zCK/
实际上由以下服务提供： http://fiddle.jshell.net/jomanlk/y9zCK/show/
If you look at the results pane for a fiddle you'll notice that it's actually an IFRAME pointing to a different domain which means that built in security will kick in which generally prevents access to the parent window.
This fiddle for example : http://jsfiddle.net/jomanlk/y9zCK/
Is actually served by : http://fiddle.jshell.net/jomanlk/y9zCK/show/
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如果您查看结果窗格中的小提琴，您会注意到它实际上是一个指向不同域的 IFRAME，这意味着内置安全性将启动，通常会阻止访问父窗口。
例如这个小提琴： http://jsfiddle.net/jomanlk/y9zCK/
实际上由以下服务提供： http://fiddle.jshell.net/jomanlk/y9zCK/show/
If you look at the results pane for a fiddle you'll notice that it's actually an IFRAME pointing to a different domain which means that built in security will kick in which generally prevents access to the parent window.
This fiddle for example : http://jsfiddle.net/jomanlk/y9zCK/
Is actually served by : http://fiddle.jshell.net/jomanlk/y9zCK/show/