> For the complete documentation index, see [llms.txt](https://3440217568.gitbook.io/rxswift/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://3440217568.gitbook.io/rxswift/decision_tree/timeout.md).

# timeout

**如果源 `Observable` 在规定时间内没有发出任何元素，就产生一个超时的 `error` 事件**

![](/files/-MWlwPGcCSqwofG9Pogs)

如果 `Observable` 在一段时间内没有产生元素，**timeout** 操作符将使它发出一个 `error` 事件。


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