jquery.ajax()可以传入一个选项 `cache = false`

【 在 XeCycle (据说是小 X) 的大作中提到: 】
: The browser may not send a request at all, according to its cache rules.
: I on the other hand have an application that needs to reload an image
: over and over, but at first the browser sends almost only the first request.
: ...................
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FROM 117.30.118.*