{"id":23596,"date":"2024-03-16T22:48:08","date_gmt":"2024-03-16T13:48:08","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/how-can-child-components-pass-values-to-parent-components-in-react-react%e3%81%ae%e5%ad%90%e3%82%b3%e3%83%b3%e3%83%9d%e3%83%bc%e3%83%8d%e3%83%b3%e3%83%88%e3%81%8c%e8%a6%aa%e3%82%b3%e3%83%b3%e3%83%9d\/"},"modified":"2025-08-07T16:34:07","modified_gmt":"2025-08-07T07:34:07","slug":"how-can-child-components-pass-values-to-parent-components-in-react-react%e3%81%ae%e5%ad%90%e3%82%b3%e3%83%b3%e3%83%9d%e3%83%bc%e3%83%8d%e3%83%b3%e3%83%88%e3%81%8c%e8%a6%aa%e3%82%b3%e3%83%b3%e3%83%9d","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/how-can-child-components-pass-values-to-parent-components-in-react-react%e3%81%ae%e5%ad%90%e3%82%b3%e3%83%b3%e3%83%9d%e3%83%bc%e3%83%8d%e3%83%b3%e3%83%88%e3%81%8c%e8%a6%aa%e3%82%b3%e3%83%b3%e3%83%9d\/","title":{"rendered":"How can child components pass values to parent components in React? React\u306e\u5b50\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304c\u89aa\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b\u5024\u3092\u4f1d\u9054\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f"},"content":{"rendered":"

React\u306e\u5834\u5408\u3001\u5b50\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304b\u3089\u89aa\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b\u5024\u3092\u6e21\u3059\u65b9\u6cd5\u306f2\u3064\u3042\u308a\u307e\u3059\u3002<\/p>\n

    \n
  1. callback\u95a2\u6570\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001\u89aa\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306fprops\u3092\u4ecb\u3057\u3066\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3092\u5b50\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b\u6e21\u3059\u3053\u3068\u304c\u3067\u304d\u3001\u5b50\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u3053\u306e\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3092\u547c\u3073\u51fa\u3057\u3066\u5f15\u6570\u3092\u6e21\u3059\u3053\u3068\u3067\u5024\u3092\u89aa\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b\u4f1d\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n

    \u89aa\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\uff1a<\/p>\n

    import<\/span> React<\/span>, { useState } from<\/span> 'react'<\/span>;\r\nimport<\/span> ChildComponent<\/span> from<\/span> '.\/ChildComponent'<\/span>;\r\n\r\nfunction<\/span> ParentComponent<\/span>() {\r\n  const<\/span> [value, setValue] = useState<\/span>(''<\/span>);\r\n\r\n  const<\/span> handleChildValue<\/span> = (childValue<\/span>) => {\r\n    setValue<\/span>(childValue);\r\n  };\r\n\r\n  return<\/span> (\r\n    <div<\/span>><\/span>\r\n      <ChildComponent<\/span> onValueChange<\/span>={handleChildValue}<\/span> \/><\/span>\r\n      <p<\/span>><\/span>Value from child component: {value}<\/p<\/span>><\/span>\r\n    <\/div<\/span>><\/span><\/span>\r\n  );\r\n}\r\n\r\nexport<\/span> default<\/span> ParentComponent<\/span>;\r\n<\/code><\/pre>\n
    \u30b5\u30d6\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\uff1a<\/p>\n
    import<\/span> React<\/span>, { useState } from<\/span> 'react'<\/span>;\r\n\r\nfunction<\/span> ChildComponent<\/span>({ onValueChange }<\/span>) {\r\n  const<\/span> [inputValue, setInputValue] = useState<\/span>(''<\/span>);\r\n\r\n  const<\/span> handleChange<\/span> = (event<\/span>) => {\r\n    setInputValue<\/span>(event.target<\/span>.value<\/span>);\r\n    onValueChange<\/span>(event.target<\/span>.value<\/span>);\r\n  };\r\n\r\n  return<\/span> (\r\n    <div<\/span>><\/span>\r\n      <input<\/span> type<\/span>=\"text\"<\/span> value<\/span>={inputValue}<\/span> onChange<\/span>={handleChange}<\/span> \/><\/span>\r\n    <\/div<\/span>><\/span><\/span>\r\n  );\r\n}\r\n\r\nexport<\/span> default<\/span> ChildComponent<\/span>;\r\n<\/code><\/pre>\n
    \u4e0a\u306e\u4f8b\u3067\u306f\u3001\u5b50\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8ChildComponent\u306fonValueChange\u3068\u3044\u3046\u540d\u524d\u306eprops\u3092\u53d7\u3051\u53d6\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3067\u3059\u3002\u5b50\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u5165\u529b\u30dc\u30c3\u30af\u30b9\u306e\u5024\u304c\u5909\u66f4\u3055\u308c\u308b\u3068\u3001handleChange\u95a2\u6570\u304c\u547c\u3073\u51fa\u3055\u308c\u3001\u5165\u529b\u3055\u308c\u305f\u5024\u304conValueChange\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u306b\u6e21\u3055\u308c\u3001\u89aa\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b\u5024\u304c\u6e21\u3055\u308c\u307e\u3059\u3002<\/p>\n
      \n
    1. \u89aa\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u3001Context\u3092\u4f5c\u6210\u3057\u3001\u5fc5\u8981\u306a\u5024\u3092Context\u306eProvider\u306b\u914d\u7f6e\u3059\u308b\u3053\u3068\u3067\u3001\u5b50\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u305d\u306e\u5024\u3092\u53d6\u5f97\u3059\u308b\u305f\u3081\u306bContext\u306eConsumer\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n
      \u89aa\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\uff1a<\/p>\n
      import<\/span> React<\/span>, { useState } from<\/span> 'react'<\/span>;\r\nimport<\/span> { MyContext<\/span> } from<\/span> '.\/MyContext'<\/span>;\r\nimport<\/span> ChildComponent<\/span> from<\/span> '.\/ChildComponent'<\/span>;\r\n\r\nfunction<\/span> ParentComponent<\/span>() {\r\n  const<\/span> [value, setValue] = useState<\/span>(''<\/span>);\r\n\r\n  return<\/span> (\r\n    <div<\/span>><\/span>\r\n      <MyContext.Provider<\/span> value<\/span>={value}<\/span>><\/span>\r\n        <ChildComponent<\/span> \/><\/span>\r\n      <\/MyContext.Provider<\/span>><\/span>\r\n      <p<\/span>><\/span>Value from child component: {value}<\/p<\/span>><\/span>\r\n    <\/div<\/span>><\/span><\/span>\r\n  );\r\n}\r\n\r\nexport<\/span> default<\/span> ParentComponent<\/span>;\r\n<\/code><\/pre>\n
      \u30b5\u30d6\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\uff1a<\/p>\n
      import<\/span> React<\/span>, { useContext, useState } from<\/span> 'react'<\/span>;\r\nimport<\/span> { MyContext<\/span> } from<\/span> '.\/MyContext'<\/span>;\r\n\r\nfunction<\/span> ChildComponent<\/span>() {\r\n  const<\/span> value = useContext<\/span>(MyContext<\/span>);\r\n  const<\/span> [inputValue, setInputValue] = useState<\/span>(''<\/span>);\r\n\r\n  const<\/span> handleChange<\/span> = (event<\/span>) => {\r\n    setInputValue<\/span>(event.target<\/span>.value<\/span>);\r\n  };\r\n\r\n  return<\/span> (\r\n    <div<\/span>><\/span>\r\n      <input<\/span> type<\/span>=\"text\"<\/span> value<\/span>={inputValue}<\/span> onChange<\/span>={handleChange}<\/span> \/><\/span>\r\n      <p<\/span>><\/span>Value from parent component: {value}<\/p<\/span>><\/span>\r\n    <\/div<\/span>><\/span><\/span>\r\n  );\r\n}\r\n\r\nexport<\/span> default<\/span> ChildComponent<\/span>;\r\n<\/code><\/pre>\n
      \u4e0a\u8a18\u306e\u4f8b\u3067\u306f\u3001\u89aa\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8ParentComponent\u304cMyContext\u3092\u4f5c\u6210\u3057\u3001\u305d\u306evalue\u3092MyContext.Provider\u306evalue\u30d7\u30ed\u30d1\u30c6\u30a3\u306b\u8a2d\u5b9a\u3057\u307e\u3057\u305f\u3002 \u5b50\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8ChildComponent\u306f\u3001useContext\u3092\u4f7f\u7528\u3057\u3066MyContext\u306e\u5024\u3092\u53d6\u5f97\u3057\u3001\u305d\u308c\u3092\u30da\u30fc\u30b8\u306b\u8868\u793a\u3057\u307e\u3059\u3002 \u5b50\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u307e\u305f\u3001input\u306eonChange\u30a4\u30d9\u30f3\u30c8\u3092\u4f7f\u7528\u3057\u3066inputValue\u306e\u72b6\u614b\u5024\u3092\u66f4\u65b0\u3067\u304d\u307e\u3059\u304c\u3001\u3053\u306e\u5024\u306f\u5b50\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u5185\u306b\u306e\u307f\u5b58\u5728\u3057\u3001\u89aa\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b\u306f\u4f1d\u308f\u308a\u307e\u305b\u3093\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
      React\u306e\u5834\u5408\u3001\u5b50\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304b\u3089\u89aa\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b\u5024\u3092\u6e21\u3059\u65b9\u6cd5\u306f2\u3064\u3042\u308a\u307e\u3059\u3002 callback\u95a2\u6570\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001\u89aa\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306fprops\u3092\u4ecb\u3057\u3066\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3092\u5b50\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b\u6e21\u3059\u3053\u3068\u304c\u3067\u304d\u3001\u5b50\u30b3\u30f3\u30dd\u30fc\u30cd […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-23596","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"yoast_head":"\nHow can child components pass values to parent components in React? React\u306e\u5b50\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304c\u89aa\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b\u5024\u3092\u4f1d\u9054\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"How can child components pass values to parent components in React? React\u306e\u5b50\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304c\u89aa\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b\u5024\u3092\u4f1d\u9054\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/ja\/blog\/how-can-child-components-pass-values-to-parent-components-in-react-react\u306e\u5b50\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304c\u89aa\u30b3\u30f3\u30dd\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How can child components pass values to parent components in React? React\u306e\u5b50\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304c\u89aa\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b\u5024\u3092\u4f1d\u9054\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f\" \/>\n<meta property=\"og:description\" content=\"How can child components pass values to parent components in React? 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