{"id":38543,"date":"2023-03-26T01:33:25","date_gmt":"2023-08-13T08:46:30","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/react%e5%b1%9e%e6%80%a7%ef%bc%88props%ef%bc%89%e5%92%8c%e7%8a%b6%e6%80%81%ef%bc%88state%ef%bc%89\/"},"modified":"2024-04-29T20:33:15","modified_gmt":"2024-04-29T12:33:15","slug":"react%e5%b1%9e%e6%80%a7%ef%bc%88props%ef%bc%89%e5%92%8c%e7%8a%b6%e6%80%81%ef%bc%88state%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/react%e5%b1%9e%e6%80%a7%ef%bc%88props%ef%bc%89%e5%92%8c%e7%8a%b6%e6%80%81%ef%bc%88state%ef%bc%89\/","title":{"rendered":"React\u5c5e\u6027\uff08props\uff09\u548c\u72b6\u6001\uff08state\uff09"},"content":{"rendered":"

\u7ec4\u4ef6\u7684\u5c5e\u6027\u548c\u72b6\u6001<\/h1>\n

Props\u548cState\u662f\u7ec4\u4ef6\u7684\u6570\u636e\u7ba1\u7406\u65b9\u6cd5\uff0c\u7528\u4e8e\u5728\u7ec4\u4ef6\u4e4b\u95f4\u4f20\u9012\u6570\u636e\u7b49\u3002
\n\u7b80\u8981\u8bf4\u660e\u5982\u4e0b\uff1a
\nState\uff1a\u5728\u7ec4\u4ef6\u5185\u90e8\u7ba1\u7406\u7684\u79c1\u6709\u503c\u3002
\nProps\uff1a\u4f20\u9012\u7ed9\u53e6\u4e00\u4e2a\u7ec4\u4ef6\u7684\u5168\u5c40\u503c\u3002<\/p>\n

\u9053\u5177<\/h1>\n

Props\u662f\u7528\u4e8e\u5728\u7236\u7ec4\u4ef6\u548c\u5b50\u7ec4\u4ef6\u4e4b\u95f4\u4f20\u9012\u6570\u636e\u7684\u5bf9\u8c61\u3002\u901a\u8fc7\u5728\u7236\u7ec4\u4ef6\u4e2d\u4e3a\u5b50\u7ec4\u4ef6\u8bbe\u7f6e\u5c5e\u6027\uff0c\u53ef\u4ee5\u5c06\u503c\u4f5c\u4e3aprops\u4f20\u9012\u7ed9\u5b50\u7ec4\u4ef6\u3002<\/p>\n

Props\u7684\u4f7f\u7528\u65b9\u6cd5<\/h2>\n

\u7236\u7ec4\u4ef6<\/p>\n

const<\/span> ParentComponent<\/span> =<\/span> ()<\/span> =><\/span> {<\/span>\r\n\tconst<\/span> name<\/span> =<\/span> '<\/span>John<\/span>'<\/span>;<\/span>\r\n\t\r\n\treturn <\/span>(<\/span>\r\n\t\t<<\/span>div<\/span>><\/span>\r\n\t\t\t<<\/span>ChildComponent<\/span> name<\/span>=<\/span>{<\/span>name<\/span>}<\/span> age<\/span>=<\/span>{<\/span>30<\/span>}<\/span> message<\/span>=<\/span>\"Hello\"<\/span>\/><\/span>\r\n\t\t<\/<\/span>div<\/span>><\/span>\r\n\t);<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u901a\u8fc7\u6307\u5b9a\u5b50\u7ec4\u4ef6\u7684\u5c5e\u6027\u503c\u4f5c\u4e3a\u7236\u7ec4\u4ef6\u6240\u4f7f\u7528\u7684\u5c5e\u6027\u6765\u4f20\u9012\u6570\u636e\u3002
\n\u5c5e\u6027\u540d\u53ef\u4ee5\u81ea\u7531\u547d\u540d\uff0c\u5982\u679c\u8981\u4f20\u9012\u7684\u503c\u662f\u53d8\u91cf\u6216\u8005\u6570\u5b57\uff0c\u9700\u8981\u7528\u82b1\u62ec\u53f7{}\u5305\u88f9\uff0c\u5982\u679c\u662f\u5b57\u7b26\u4e32\u5219\u9700\u8981\u7528\u53cc\u5f15\u53f7””\u5305\u88f9\u3002<\/p>\n
\u5b50\u7ec4\u4ef6 (z\u01d0<\/p>\n
const<\/span> ChildConponent<\/span> =<\/span> (<\/span>props<\/span>)<\/span> =><\/span> {<\/span>\r\n\treturn<\/span>(<\/span>\r\n\t\t<<\/span>div<\/span>><\/span>\r\n\t\t\t<<\/span>p<\/span>><\/span>Name: {<\/span>props<\/span>.<\/span>name<\/span>}<\/span><\/<\/span>p<\/span>><\/span>\r\n\t\t\t<<\/span>p<\/span>><\/span>Age: {<\/span>props<\/span>.<\/span>age<\/span>}<\/span><\/<\/span>p<\/span>><\/span>\r\n\t\t\t<<\/span>p<\/span>><\/span>Message: {<\/span>props<\/span>.<\/span>message<\/span>}<\/span><\/<\/span>p<\/span>><\/span>\r\n\t\t<\/<\/span>div<\/span>><\/span>\r\n\t);<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5b50\u7ec4\u4ef6\u63a5\u53d7\u4e00\u4e2a\u4f5c\u4e3a\u53c2\u6570\u7684props\u5bf9\u8c61\uff0c\u5e76\u63a5\u6536\u6765\u81ea\u7236\u7ec4\u4ef6\u6307\u5b9a\u7684\u5c5e\u6027\u3002<\/p>\n
\u4f7f\u7528props\u4f20\u9012\u6570\u636e\u65f6\uff0c\u6570\u636e\u662f\u5355\u5411\u7684\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u867d\u7136\u53ef\u4ee5\u4ece\u7236\u7ec4\u4ef6\u5411\u5b50\u7ec4\u4ef6\u4f20\u9012\u6570\u636e\uff0c\u4f46\u4e0d\u80fd\u76f4\u63a5\u4ece\u5b50\u7ec4\u4ef6\u5411\u7236\u7ec4\u4ef6\u4f20\u9012\u6570\u636e\u3002<\/p>\n
\u9648\u8ff0<\/h1>\n
State\u6307\u7684\u662f\u7528\u4e8e\u7ba1\u7406\u7ec4\u4ef6\u72b6\u6001\u7684\u6570\u636e\u3002\u901a\u8fc7\u4f7f\u7528State\uff0c\u53ef\u4ee5\u6839\u636e\u7528\u6237\u7684\u64cd\u4f5c\u6216\u6765\u81ea\u5916\u90e8\u7684\u6570\u636e\u53d8\u5316\uff0c\u52a8\u6001\u5730\u6539\u53d8\u7ec4\u4ef6\u7684\u663e\u793a\u3002\u4e0eprops\u4e0d\u540c\u7684\u662f\uff0cState\u5141\u8bb8\u5728\u8d4b\u503c\u540e\u8fdb\u884c\u4fee\u6539\uff0c\u800cprops\u7684\u8d4b\u503c\u540e\u5219\u4e0d\u53ef\u6539\u53d8\u3002<\/p>\n
\u5728 State \u7684\u7279\u6027\u4e2d\uff0cState \u88ab\u66f4\u65b0\u65f6\u4f1a\u81ea\u52a8\u8fdb\u884c\u518d\u6e32\u67d3\u3002\u8fd9\u662f\u56e0\u4e3a\u66f4\u65b0 State \u4f1a\u89e6\u53d1\u8c03\u7528\u91cd\u65b0\u6e32\u67d3\u7684\u65b9\u6cd5\u3002\u56e0\u4e3a\u5728\u4f7f\u7528\u7c7b\u7ec4\u4ef6\u548c\u51fd\u6570\u7ec4\u4ef6\u65f6\uff0cState \u6709\u4e0d\u540c\u7684\u7528\u6cd5\uff0c\u6240\u4ee5\u5bf9\u5b83\u4eec\u5206\u522b\u8fdb\u884c\u89e3\u91ca\u3002<\/p>\n
State\u7684\u4f7f\u7528\u65b9\u5f0f<\/h2>\n
\u7c7b\u7ec4\u4ef6<\/p>\n
class<\/span> TextInput<\/span> extends<\/span> React<\/span>.<\/span>Component<\/span> {<\/span>\r\n\t\/\/\u521d\u671f\u5316<\/span>\r\n\tconstructor<\/span>(<\/span>props<\/span>){<\/span>\r\n\t\tsuper<\/span>(<\/span>props<\/span>);<\/span>\r\n\t\tthis<\/span>.<\/span>state<\/span> =<\/span> {<\/span>\r\n\t\t\ttext<\/span>:<\/span> '<\/span>hello<\/span>'<\/span>\r\n\t\t};<\/span>\r\n\t}<\/span>\r\n\r\n\thandleChange<\/span>(<\/span>event<\/span>)<\/span> {<\/span>\r\n\t\tthis<\/span>.<\/span>setState<\/span>({<\/span> text<\/span>:<\/span> event<\/span>.<\/span>target<\/span>.<\/span>value<\/span> });<\/span>\r\n\t}<\/span>\t\r\n\r\n\trender<\/span>(){<\/span>\r\n\t\treturn<\/span>(<\/span>\r\n\t\t\t<<\/span>div<\/span>><\/span>\r\n\t\t\t\t<<\/span>input<\/span> \r\n\t\t\t\t\t\ttype<\/span>=<\/span>\"text\"<\/span> \r\n\t\t\t\t\t\tvalue<\/span>=<\/span>{<\/span>this<\/span>.<\/span>state<\/span>.<\/span>text<\/span>}<\/span>\r\n\t\t\t\t\t\tonChange<\/span>=<\/span>{<\/span>(<\/span>event<\/span>)<\/span> =><\/span> this<\/span>.<\/span>handleChange<\/span>(<\/span>event<\/span>)<\/span>}<\/span>\r\n\t\t\t\t\/><\/span>\r\n\t\t\t\t<<\/span>p<\/span>><\/span>\u5165\u529b\u3055\u308c\u305f\u30c6\u30ad\u30b9\u30c8\uff1a{<\/span>this<\/span>.<\/span>state<\/span>.<\/span>text<\/span>}<\/span><\/<\/span>p<\/span>><\/span>\r\n\t\t\t<\/<\/span>div<\/span>><\/span>\r\n\t\t);<\/span>\r\n\t}<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
2. \u8bbe\u5b9a\u7ec4\u4ef6\u7684\u521d\u59cb\u72b6\u6001
\n\u2192 \u5f53\u7ec4\u4ef6\u9996\u6b21\u6e32\u67d3\u65f6\uff0c\u5728 constructor \u65b9\u6cd5\u4e2d\u521d\u59cb\u5316 this.state\u3002<\/p>\n
\uff12\uff0e\u66f4\u65b0State\uff1a
\n\u8c03\u7528this.handleChange\uff0c\u901a\u8fc7this.setState\u65b9\u6cd5\u6765\u66f4\u65b0state\u3002
\n\u5f53onChange\uff08\u5373\u8f93\u5165\u5b57\u6bb5\u7684\u503c\u53d1\u751f\u53d8\u5316\u65f6\uff09\uff0c\u4f1a\u8c03\u7528handleChange\u3002<\/p>\n
\u51fd\u6570\u7ec4\u4ef6<\/p>\n
import<\/span> React<\/span>,<\/span> {<\/span> useState<\/span> }<\/span> from<\/span> '<\/span>react<\/span>'<\/span>;<\/span>\r\n\r\nfunction<\/span> TextInput<\/span>()<\/span> {<\/span>\r\n  const<\/span> [<\/span>text<\/span>,<\/span> setText<\/span>]<\/span> =<\/span> useState<\/span>(<\/span>'<\/span>Hello<\/span>'<\/span>);<\/span>\r\n\r\n  const<\/span> handleChange<\/span> =<\/span> (<\/span>event<\/span>)<\/span> =><\/span> {<\/span>\r\n    setText<\/span>(<\/span>event<\/span>.<\/span>target<\/span>.<\/span>value<\/span>);<\/span>\r\n  };<\/span>\r\n\r\n  return <\/span>(<\/span>\r\n    <<\/span>div<\/span>><\/span>\r\n      <<\/span>input<\/span>\r\n        type<\/span>=<\/span>\"text\"<\/span>\r\n        value<\/span>=<\/span>{<\/span>text<\/span>}<\/span>\r\n        onChange<\/span>=<\/span>{<\/span>handleChange<\/span>}<\/span>\r\n      \/><\/span>\r\n      <<\/span>p<\/span>><\/span>\u5165\u529b\u3055\u308c\u305f\u30c6\u30ad\u30b9\u30c8: {<\/span>text<\/span>}<\/span><\/<\/span>p<\/span>><\/span>\r\n    <\/<\/span>div<\/span>><\/span>\r\n  );<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5728\u51fd\u6570\u7ec4\u4ef6\u4e2d\uff0c\u901a\u8fc7\u4f7f\u7528 Hooks\uff08\u94a9\u5b50\uff09\uff0c\u6765\u8fdb\u884c\u72b6\u6001\u7684\u7ba1\u7406\u548c\u66f4\u65b0\u3002<\/p>\n
    \n
  • \n
      const [text, setText] = useState(‘Hello’)<\/ul>\n<\/li>\n<\/ul>\n
       <\/p>\n
        \n
      • \n
          useState\u30d5\u30c3\u30af\u3092\u4f7f\u7528\u3057\u3066\uff0c\u521d\u671f\u5024\u304cHello\u306etext\u3068\u3044\u3046state\u5909\u6570\u3068\uff0c\u305d\u306estate\u5909\u6570\u3092\u66f4\u65b0\u3059\u308b\u305f\u3081\u306e\u95a2\u6570setText\u3092\u5ba3\u8a00\u3059\u308b\uff0e<\/ul>\n<\/li>\n<\/ul>\n
           <\/p>\n
            \n
          • \n
              handleChange<\/ul>\n<\/li>\n<\/ul>\n
               <\/p>\n
                handleChange\u95a2\u6570\u306f\u5165\u529b\u30d5\u30a9\u30fc\u30e0\u304c\u5909\u66f4\u3055\u308c\u305f\u3068\u304d\u306b\u547c\u3073\u51fa\u3055\u308c\u308b\u95a2\u6570\u3067\uff0c\u305d\u306e\u4e2d\u3067\u306f\uff0cstate\u5909\u6570\u3092\u5909\u66f4\u3059\u308b\u51e6\u7406\u3092\u884c\u3063\u3066\u3044\u308b\uff0euseState\u3067\u5ba3\u8a00\u3057\u305fstate\u5909\u6570\u3092\u5909\u66f4\u3059\u308b\u95a2\u6570\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067\uff0c\u4e00\u7dd2\u306b\u5ba3\u8a00\u3057\u305fstate\u5909\u6570\u306e\u5024\u3092\u5909\u66f4\u3059\u308b\uff0e<\/ul>\n
                \u5173\u4e8e\u94a9\u5b50\u51fd\u6570\u7684\u5185\u5bb9\uff0c\u6211\u5df2\u7ecf\u6574\u7406\u5728\u53e6\u4e00\u7bc7\u6587\u7ae0\u4e2d\u4e86\u3002<\/p>\n
                 <\/p>\n","protected":false},"excerpt":{"rendered":"
                \u7ec4\u4ef6\u7684\u5c5e\u6027\u548c\u72b6\u6001 Props\u548cState\u662f\u7ec4\u4ef6\u7684\u6570\u636e\u7ba1\u7406\u65b9\u6cd5\uff0c\u7528\u4e8e\u5728\u7ec4\u4ef6\u4e4b\u95f4\u4f20\u9012\u6570\u636e\u7b49\u3002 \u7b80\u8981\u8bf4\u660e\u5982\u4e0b\uff1a St […]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-38543","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\nReact\u5c5e\u6027\uff08props\uff09\u548c\u72b6\u6001\uff08state\uff09 - Blog - Silicon Cloud<\/title>\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\/zh\/blog\/react\u5c5e\u6027\uff08props\uff09\u548c\u72b6\u6001\uff08state\uff09\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"React\u5c5e\u6027\uff08props\uff09\u548c\u72b6\u6001\uff08state\uff09\" \/>\n<meta property=\"og:description\" content=\"\u7ec4\u4ef6\u7684\u5c5e\u6027\u548c\u72b6\u6001 Props\u548cState\u662f\u7ec4\u4ef6\u7684\u6570\u636e\u7ba1\u7406\u65b9\u6cd5\uff0c\u7528\u4e8e\u5728\u7ec4\u4ef6\u4e4b\u95f4\u4f20\u9012\u6570\u636e\u7b49\u3002 \u7b80\u8981\u8bf4\u660e\u5982\u4e0b\uff1a St […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/react\u5c5e\u6027\uff08props\uff09\u548c\u72b6\u6001\uff08state\uff09\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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