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的调用，React 将无法自动检查你的 Hook 是否违反了 "),s("a",{attrs:{href:"https://zh-hans.reactjs.org/docs/hooks-rules.html",target:"_blank",rel:"noopener noreferrer"}},[t._v("Hook 的规则"),s("OutboundLink")],1),t._v("。")]),t._v(" "),s("p",[t._v("**在两个组件中使用相同的 Hook 会共享 state 吗？**不会。自定义 Hook 是一种重用"),s("em",[t._v("状态逻辑")]),t._v("的机制(例如设置为订阅并存储当前值)，所以每次使用自定义 Hook 时，其中的所有 state 和副作用都是完全隔离的。")]),t._v(" "),s("p",[t._v("**自定义 Hook 如何获取独立的 state？**每次"),s("em",[t._v("调用")]),t._v(" Hook，它都会获取独立的 state。由于我们直接调用了 "),s("code",[t._v("useFriendStatus")]),t._v("，从 React 的角度来看，我们的组件只是调用了 "),s("code",[t._v("useState")]),t._v(" 和 "),s("code",[t._v("useEffect")]),t._v("。 正如我们在"),s("a",{attrs:{href:"https://zh-hans.reactjs.org/docs/hooks-effect.html#tip-use-multiple-effects-to-separate-concerns",target:"_blank",rel:"noopener noreferrer"}},[t._v("之前章节"),s("OutboundLink")],1),t._v("中"),s("a",{attrs:{href:"https://zh-hans.reactjs.org/docs/hooks-state.html#tip-using-multiple-state-variables",target:"_blank",rel:"noopener 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