{"id":323477,"date":"2021-02-05T22:56:41","date_gmt":"2021-02-05T14:56:41","guid":{"rendered":"http:\/\/4563.org\/?p=323477"},"modified":"2021-02-05T22:56:41","modified_gmt":"2021-02-05T14:56:41","slug":"typescript-%e4%b8%ad%ef%bc%8c%e5%a6%82%e4%bd%95%e5%ae%9a%e4%b9%89%ef%bc%88%e5%a3%b0%e6%98%8e%ef%bc%89%e5%87%bd%e6%95%b0%e7%9a%84%e7%b1%bb%e5%9e%8b%ef%bc%9f","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=323477","title":{"rendered":"TypeScript \u4e2d\uff0c\u5982\u4f55\u5b9a\u4e49\uff08\u58f0\u660e\uff09\u51fd\u6570\u7684\u7c7b\u578b\uff1f"},"content":{"rendered":"
\n
\n
\n

TypeScript \u4e2d\uff0c\u5982\u4f55\u5b9a\u4e49\uff08\u58f0\u660e\uff09\u51fd\u6570\u7684\u7c7b\u578b\uff1f <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : Kasumi20 <\/span> <\/i> 1<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

\u6211\u77e5\u9053\u53ef\u4ee5\u628a\u51fd\u6570\u5199\u6210\u53d8\u91cf\uff0c\u5c31\u53ef\u4ee5\u58f0\u660e\u51fd\u6570\u7684\u7c7b\u578b\u4e86\uff0c\u6bd4\u5982\u8fd9\u91cc\u7684 Root \u7ec4\u4ef6\uff1a<\/p>\n

import * as React from 'react';  var Root: React.FC = (props: React.PropsWithChildren<{}>) => {     return (         <div>             {props.children}         <\/div>     ) }  export default () => (     < >         <Root>             <div>Hello<\/div>         <\/Root>     <\/> ) <\/code><\/pre>\n
\u4f46\u662f\u592a\u4e11\u4e86\uff0c\u8be5\u600e\u4e48\u5199\u5462\uff1f<\/p>\n
function Root(props) { } <\/code><\/pre>\n<\/p><\/div>\n
 \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (21<\/span>)        <\/div>\n
 <\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : Yadomin <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 `function Root(props): React.FC {}`                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : Kasumi20 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @Yadomin \u5927\u54e5\uff0c\u4f60\u8fd9\u662f\u5b9a\u4e49\u8fd4\u56de\u7c7b\u578b                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : Yadomin <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u4e5f\u53ef\u4ee5\u5199\u6210
    const Root = (props): React.FC => {}                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : meepo3927 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u51fd\u6570\u6709\u7c7b\u578b\u5417                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : knives <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u662f\u6307 props \u7684\u7c7b\u578b\u5b9a\u4e49\uff1f\u53ef\u53c2\u8003\uff1a https:\/\/juejin.cn\/post\/6884144754993397767                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : Kasumi20 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @meepo3927 \u8fd9\u53e5\u8bdd\u95ee\u5f97\u5f88\u54f2\u5b66\uff0c\u6211\u559c\u6b22                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : Justin13 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 interface \u91cc\u7684 function types \u53ef\u4ee5\u505a\u5230                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : BBUG <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u4e0d\u884c<\/p>\n
    \u660e\u786e\u4e00\u70b9\uff0c`var Root: React.FC = () => {}` \u7b49\u53f7\u53f3\u8fb9\u7684\u51fd\u6570\u58f0\u660e\u9690\u5f0f\u5305\u542b\u4e00\u4e2a\u7c7b\u578b\uff0c\u5de6\u8fb9\u53d8\u91cf\u7c7b\u578b\u76f8\u5f53\u4e8e\u662f\u5bf9\u53f3\u8fb9\u51fd\u6570\u7c7b\u578b\u7684\u4e00\u4e2a\u7ea6\u675f<\/p>\n
    \u4e00\u822c\u63a8\u8350\u4f7f\u7528\u5e38\u89c4\u51fd\u6570\u58f0\u660e\u7ec4\u4ef6\u5373\u53ef\uff0c\u4e0d\u9700\u8981\u4f7f\u7528 React.FC
    https:\/\/github.com\/typescript-cheatsheets\/react\/blob\/main\/README.md#function-components                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : iamppz <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 “`
    const func: () => void = function () {
     …
    };
    “`<\/p>\n
    \u662f\u8fd9\u4e2a\u610f\u601d\uff1f                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : hupo0 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 “` typescript
    interface Root {
     (props: React.PropsWithChildren<{}>): React.FC;
    }
    “`                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : learningman <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u51fd\u6570\u7684\u7c7b\u578b\u4e0d\u5c31\u662f\u51fd\u6570\uff0c\u4f60\u60f3\u8bf4\u7684\u662f\u8fd4\u56de\u503c\uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : Reapper <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u51fd\u6570\u5c31\u662f\u7c7b\u578b\uff0c\u9664\u975e\u4f60\u8bf4\u8fd4\u56de\u503c\u7c7b\u578b                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : yazoox <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u8fd9\u4e2a Root \u7684\u7c7b\u578b\uff0c\u5c31\u662f React.FC, \u8fd4\u56de\u503c\u662f React.Element<any, any> | null                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : lanten <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u5176\u5b9e\u51fd\u6570\u7c7b\u578b\u7684\u5b9a\u4e49\u5c31\u662f\u884c\u53c2\u548c\u8fd4\u56de\u503c\u7c7b\u578b\u5b9a\u4e49\uff0c\u53ef\u4ee5\u76f4\u63a5\u7528 typeof \u63a8\u65ad\u3002<\/p>\n
    “`ts
    function foo(strArr: string[]): string {
     return strArr.join(‘,’)
    }<\/p>\n
    type Foo = typeof foo<\/p>\n
    “`<\/p>\n
    \u4e5f\u53ef\u4ee5\u7528 interface \u5b9a\u4e49\u51fd\u6570\u7c7b\u578b’<\/p>\n
    “`ts
    interface F {
     (strArr: string[]): string
    }<\/p>\n
    const fn: F = strArr => {
     return strArr.join(‘,’)
    }
    “`                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : 1a0ma0 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 interface \u4e0d\u662f\u53ef\u4ee5\u5b9a\u4e49\u561b\uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : siweipancc <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u2026\u2026\uff0c\u4f60\u5148\u56de\u7b54\u6211\u5b98\u7f51\u6587\u6863\u4f60\u770b\u5b8c\u4e86\u5417 \ud83d\ude00                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : Kasumi20 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @siweipancc \u4f60\u5148\u56de\u7b54\u6211\u4f60\u770b\u5b8c\u6211\u95ee\u9898\u4e86\u5417\uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : ljpCN <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 14 \u6b63\u89e3\u3002
    “`typescript
    function fn(arg: string): string {
     return arg;
    }
    “`                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : palmers <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u6211\u77e5\u9053\u7684\u53ef\u4ee5\u4f7f\u7528\u51fd\u6570\u58f0\u660e\uff08 Function Declaration \uff09\u548c\u51fd\u6570\u8868\u8fbe\u5f0f\uff08 Function Expression \uff09
    \u5177\u4f53\u53ef\u4ee5\u53c2\u8003\u8fd9\u4e2a: https:\/\/www.typescriptlang.org\/docs\/handbook\/interfaces.html#function-types                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : coffeedeveloper <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u4e0a\u8ba4\u4e3a\u80fd\u7533\u660e\u7684\u90fd\u662f\u6ca1\u4e86\u89e3\u5b9e\u9645\u95ee\u9898\u7684\uff0c\u8fd9\u4e2a\u95ee\u9898\u6211\u4e5f\u56f0\u6270\u8fc7\u3002\u76ee\u524d\u786e\u5b9e\u662f\u65e0\u89e3\u7684\u3002<\/p>\n
    \u6bd4\u5982\u6211\u60f3\u7533\u660e\u4e00\u4e2a\u51fd\u6570\u7684\u7c7b\u578b\u7533\u660e\uff0c\u6709 x \u3001y \u4e24\u4e2a number \u53c2\u6570\uff0c\u8fd4\u56de\u4e00\u4e2a number \u3002\u53ef\u4ee5\u7528 interface<\/p>\n
    “`typescript
    interface NumFn {
     (x: number, b: number): number
    }
    “`<\/p>\n
    \u968f\u540e\u5e0c\u671b `function Foo` \u548c`function Bar`\u90fd\u80fd\u591f\u57fa\u4e8e NumFn \u8fd9\u4e2a interface \u7ea6\u5b9a\u6765\u5b9e\u73b0\u7684\u8bdd\uff0c\u76ee\u524d\u786e\u5b9e\u662f\u6ca1\u6cd5\u5f04\u7684\uff0c\u53ea\u80fd\u901a\u8fc7 `const foo = `\u6765\u52c9\u5f3a\u8fbe\u5230\u76ee\u7684\u3002                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : Sparetire <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u600e\u4e48\u8fd9\u4e48\u591a\u8fde\u95ee\u9898\u90fd\u6ca1\u770b\u61c2\u5c31\u5f3a\u7b54\u7684\u3002\u3002\u8fd8\u51fd\u6570\u6709\u7c7b\u578b\u5417\u90fd\u95ee\u51fa\u6765\u4e86
    \u4e3b\u662f\u5e0c\u671b\u5728\u5b9a\u4e49\u51fd\u6570\u7684\u540c\u65f6\u4e5f\u58f0\u660e\u51fd\u6570\u7684\u7c7b\u578b\u5427\uff0c\u6ce8\u610f\u662f\u5b9a\u4e49\u51fd\u6570\u4e0d\u662f\u51fd\u6570\u8868\u8fbe\u5f0f(js \u91cc\u9762\u4f3c\u4e4e\u662f\u8fd9\u4e48\u4e2a\u53eb\u6cd5\u5427\uff0c\u6709\u70b9\u5fd8\u4e86)
    \u663e\u7136\u4e3b\u662f\u77e5\u9053\u51fd\u6570\u8868\u8fbe\u5f0f\u7684\u65f6\u5019\u8be5\u5982\u4f55\u6307\u5b9a\u51fd\u6570\u7c7b\u578b\u3002\u3002\u8fd8\u4e00\u5806\u4eba\u6401\u8fd9\u63a5\u53e3 typeof \u7684\u3002\u3002
    \u56de\u5230\u95ee\u9898\uff0c\u76ee\u524d ts \u6ca1\u6cd5\u505a                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"
    TypeScript \u4e2d\uff0c\u5982\u4f55\u5b9a\u4e49…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/323477"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=323477"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/323477\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=323477"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=323477"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=323477"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}