{"id":32662,"date":"2024-11-25T12:22:22","date_gmt":"2024-11-25T04:22:22","guid":{"rendered":"https:\/\/fwq.ai\/blog\/32662\/"},"modified":"2024-11-25T12:22:22","modified_gmt":"2024-11-25T04:22:22","slug":"react-%e4%b8%ad%e9%ab%98%e9%98%b6%e7%bb%84%e4%bb%b6%e7%9a%84%e5%8f%8b%e5%a5%bd%e4%bb%8b%e7%bb%8d","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/32662\/","title":{"rendered":"React \u4e2d\u9ad8\u9636\u7ec4\u4ef6\u7684\u53cb\u597d\u4ecb\u7ecd"},"content":{"rendered":"

\u9ad8\u9636\u7ec4\u4ef6\uff08hoc\uff09\u662f react \u4e2d\u4e00\u9879\u6709\u8da3\u7684\u6280\u672f\uff0c\u7528\u4e8e\u91cd\u6784\u5171\u4eab\u51e0\u4e4e\u76f8\u540c\u903b\u8f91\u7684\u7c7b\u4f3c\u7ec4\u4ef6\u3002\u6211\u77e5\u9053\u8fd9\u542c\u8d77\u6765\u5f88\u62bd\u8c61\u800c\u4e14\u5f88\u9ad8\u7ea7\u3002\u7136\u800c\uff0c\u5b83\u662f\u4e00\u79cd\u5e76\u975e\u7279\u5b9a\u4e8e react \u7684\u67b6\u6784\u6a21\u5f0f\uff0c\u56e0\u6b64\u60a8\u53ef\u4ee5\u4f7f\u7528\u8be5\u65b9\u6cd5\u6765\u505a\u5f88\u591a\u4e8b\u60c5\u3002 <\/p>\n

\u4f8b\u5982\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u5b83\u5411\u67d0\u4e2a\u7ec4\u4ef6\u6dfb\u52a0\u52a0\u8f7d\u6307\u793a\u5668\uff0c\u800c\u65e0\u9700\u8c03\u6574\u539f\u59cb\u7ec4\u4ef6\uff0c\u6216\u8005\u60a8\u53ef\u4ee5\u9690\u85cf\u7ec4\u4ef6\u7684\u5c5e\u6027\u4ee5\u4f7f\u5176\u4e0d\u90a3\u4e48\u5197\u957f\u3002\u5e94\u7528\u7a0b\u5e8f\u6709\u5f88\u591a\uff0c\u6211\u8bd5\u56fe\u5728\u672c\u6559\u7a0b\u4e2d\u4ecb\u7ecd\u5176\u4e2d\u7684\u5927\u90e8\u5206\u3002<\/p>\n

\u8fd8\u6709\u5176\u4ed6\u51e0\u4e2a\u6559\u7a0b\u53ef\u4ee5\u6559\u60a8\u6709\u5173 HOC \u7684\u77e5\u8bc6\uff0c\u4f46\u5176\u4e2d\u5927\u591a\u6570\u90fd\u662f\u9488\u5bf9\u9ad8\u7ea7 React \u5f00\u53d1\u4eba\u5458\u7684\u3002\u5f53\u6211\u5f00\u59cb\u5b66\u4e60 React \u65f6\uff0c\u6211\u5f88\u96be\u7406\u89e3\u9ad8\u9636\u7ec4\u4ef6\u7684\u6982\u5ff5\u4ee5\u53ca\u5982\u4f55\u5c06 HOC \u5408\u5e76\u5230\u6211\u7684\u9879\u76ee\u4e2d\u4ee5\u7f16\u5199\u66f4\u597d\u7684\u4ee3\u7801\u3002\u672c\u6587\u5c06\u89e3\u91ca\u60a8\u9700\u8981\u4e86\u89e3\u7684 HOC \u4ece\u5934\u5230\u5b75\u5316\u7684\u6240\u6709\u5185\u5bb9\u3002 <\/p>\n

<\/em>\u6982\u8ff0<\/h2>\n<\/p>\n

\u672c\u6559\u7a0b\u5206\u4e3a\u4e09\u4e2a\u90e8\u5206\u3002\u7b2c\u4e00\u90e8\u5206\u5c06\u4ecb\u7ecd\u9ad8\u9636\u7ec4\u4ef6\u7684\u6982\u5ff5\u3002\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u5c06\u8ba8\u8bba\u5728\u67e5\u770b\u9ad8\u9636\u51fd\u6570\u548c HOC \u4e4b\u524d\u9700\u8981\u4e86\u89e3\u7684\u8bed\u6cd5\u3002\u7b2c\u4e8c\u90e8\u5206\u662f\u672c\u7cfb\u5217\u4e2d\u6700\u4ee4\u4eba\u5174\u594b\u7684\u90e8\u5206\uff0c\u60a8\u5c06\u770b\u5230 HOC \u7684\u5b9e\u9645\u793a\u4f8b\u3002\u6211\u4eec\u5c06\u4f7f\u7528 HOC \u6765\u521b\u5efa\u8868\u5355\u3001\u6388\u6743\u548c\u8bb8\u591a\u5176\u4ed6\u4e8b\u60c5\u3002 <\/p>\n

\u5728\u672c\u6559\u7a0b\u7684\u7b2c\u4e09\u90e8\u5206\u4e2d\uff0c\u6211\u4eec\u5c06\u66f4\u591a\u5730\u5173\u6ce8\u6700\u4f73\u5b9e\u8df5\u4ee5\u53ca\u5b9e\u73b0\u9ad8\u9636\u7ec4\u4ef6\u65f6\u9700\u8981\u8003\u8651\u7684\u4e8b\u9879\u3002\u6211\u4eec\u8fd8\u5c06\u7b80\u8981\u4ecb\u7ecd React \u4e2d\u4ee3\u7801\u5171\u4eab\u7684\u66ff\u4ee3\u6a21\u5f0f\uff0c\u4f8b\u5982 Render props\u3002<\/p>\n

\u5728\u5f00\u59cb\u4e4b\u524d\uff0c\u6700\u597d\u5148\u770b\u770b\u6709\u72b6\u6001\u7ec4\u4ef6\u4e0e\u65e0\u72b6\u6001\u7ec4\u4ef6\u7684\u6559\u7a0b\uff0c\u4ee5\u4fbf\u66f4\u597d\u5730\u7406\u89e3 React \u7684\u7ec4\u4ef6\u67b6\u6784\u3002<\/p>\n

ES6 \u8bed\u6cd5\u5907\u5fd8\u5355<\/h2>\n

\u6211\u4eec\u5f88\u5feb\u5c31\u4f1a\u52a8\u624b\u3002\u4f46\u5728\u6b64\u4e4b\u524d\uff0c\u6211\u8ba4\u4e3a\u60a8\u5e94\u8be5\u4e86\u89e3\u4e00\u4e9b\u4e8b\u60c5\u3002\u6211\u66f4\u559c\u6b22\u5c3d\u53ef\u80fd\u4f7f\u7528 ES6 \u8bed\u6cd5\uff0c\u5b83\u4e0e HOC \u914d\u5408\u5f97\u5f88\u597d\u3002\u4f5c\u4e3a\u521d\u5b66\u8005\uff0cHOC \u6709\u610f\u4e49\uff0c\u4f46\u67d0\u4e9b ES6 \u8bed\u6cd5\u5374\u6ca1\u6709\u610f\u4e49\u3002\u56e0\u6b64\uff0c\u6211\u5efa\u8bae\u60a8\u5148\u6d4f\u89c8\u4e00\u904d\u672c\u8282\uff0c\u7a0d\u540e\u60a8\u53ef\u4ee5\u518d\u56de\u6765\u53c2\u8003\u3002 <\/p>\n

\u7bad\u5934\u51fd\u6570<\/h3>\n

\u7bad\u5934\u51fd\u6570\u662f\u5e38\u89c4\u51fd\u6570\u8868\u8fbe\u5f0f\uff0c\u4f46\u8bed\u6cd5\u8f83\u77ed\u3002\u5b83\u4eec\u6700\u9002\u5408\u975e\u65b9\u6cd5\u51fd\u6570\uff0c\u8fd9\u4e5f\u662f\u6211\u4eec\u7279\u522b\u611f\u5174\u8da3\u7684\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e2e\u52a9\u60a8\u5165\u95e8\u7684\u793a\u4f8b\uff1a<\/p>\n

\u4e0d\u5e26\u53c2\u6570\u7684\u51fd\u6570<\/h4>\n
\/* Functions without parameters *\/\nfunction () {\n    return \"This is a function expression\";\n}\n\n\/\/ is equivalent to\n\n() =&gt; {\n return \"This is an arrow function expression\"\n}\n\n\/\/ or \n\n() =&gt; \"Arrow with a shorter syntax\"\n<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u5177\u6709\u5355\u4e2a\u53c2\u6570\u7684\u51fd\u6570<\/h4>\n
\/* Function with a single parameter *\/\n\nfunction (param) {\n  return { title: \"This function accepts a parameter and returns an object\",\n          params: param}\n}\n\n\/\/ is syntax-equivalent to \n\nparam =&gt; {\n    return { title: \"This arrow function accepts a single parameter\",\n        params: param }\n}\n\n<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u5177\u6709\u591a\u4e2a\u53c2\u6570\u7684\u51fd\u6570<\/h4>\n
\/* Function with multiple parameters *\/\n\nfunction (param1, param2) {\n  return { title: \"This function accepts multiple parameters\",\n          params: [param1,param2]}\n}\n\n\/\/ is syntax-equivalent to \n\n(param1, param2) =&gt; {\n    return {title: \"Arrow function with multiple parameters\",\n    params: [param1, param2]\n    }\n}\n\n\/\/ or\n\n(param1, param2) =&gt; ({\n      title: \"Arrow function with multiple parameters\",\n    params: [param1, param2]\n    })\n<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d\u7684\u67ef\u91cc\u5316<\/h3>\n
\u867d\u7136\u8fd9\u4e2a\u540d\u5b57\u6697\u793a\u5b83\u4e0e\u6d41\u884c\u7684\u5370\u5ea6\u7f8e\u98df\u4e2d\u7684\u4e00\u9053\u5f02\u56fd\u83dc\u80b4\u6709\u5173\uff0c\u4f46\u4e8b\u5b9e\u5e76\u975e\u5982\u6b64\u3002\u67ef\u91cc\u5316\u53ef\u5e2e\u52a9\u60a8\u5c06\u63a5\u53d7\u591a\u4e2a\u53c2\u6570\u7684\u51fd\u6570\u5206\u89e3\u4e3a\u4e00\u7cfb\u5217\u4e00\u6b21\u63a5\u53d7\u4e00\u4e2a\u53c2\u6570\u7684\u51fd\u6570\u3002\u8fd9\u662f\u4e00\u4e2a\u4f8b\u5b50\uff1a<\/p>\n
\/\/Usual sum function\nconst sum = (a, b) =&gt; a + b\n\n\/\/Curried sum function \nconst curriedSum = function (a) {\n    return function (b) {\n        return a+b\n    }\n\n\/\/Curried sum function using arrow syntax\nconst curriedSum = a =&gt; b =&gt; a+b\n\ncurriedSum(5)(4)\n\/\/9\n<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u8be5\u51fd\u6570\u53ea\u63a5\u53d7\u4e00\u4e2a\u53c2\u6570\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2a\u63a5\u53d7\u53e6\u4e00\u4e2a\u53c2\u6570\u7684\u51fd\u6570\uff0c\u8fd9\u79cd\u60c5\u51b5\u4e00\u76f4\u6301\u7eed\u5230\u6ee1\u8db3\u6240\u6709\u53c2\u6570\u4e3a\u6b62\u3002 <\/p>\n
curriedSum\n\/\/ (a) =&gt; (b) =&gt; a+b\n\ncurriedSum(4)\n\n\/\/ (b) =&gt; 4+b\n\ncurriedSum(4)(5)\n\n\/\/4+5\n<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u4e00\u4e2a\u5bc6\u5207\u76f8\u5173\u7684\u672f\u8bed\u79f0\u4e3a\u201c\u90e8\u5206\u5e94\u7528\u201d\u3002\u90e8\u5206\u5e94\u7528\u7a0b\u5e8f\u901a\u8fc7\u9884\u5148\u586b\u5145\u73b0\u6709\u51fd\u6570\u7684\u4e00\u4e9b\u53c2\u6570\u6765\u521b\u5efa\u65b0\u51fd\u6570\u3002\u65b0\u521b\u5efa\u7684\u51fd\u6570\u7684\u5143\u6570\uff08\u5373\u53c2\u6570\u6570\u91cf\uff09\u5c06\u5c0f\u4e8e\u539f\u59cb\u51fd\u6570\u7684\u5143\u6570\u3002<\/p>\n
\u4f20\u64ad\u8bed\u6cd5<\/h3>\n
\u6269\u5c55\u8fd0\u7b97\u7b26\u6269\u5c55\u6570\u7ec4\u3001\u5b57\u7b26\u4e32\u6216\u5bf9\u8c61\u8868\u8fbe\u5f0f\u7684\u5185\u5bb9\u3002\u4ee5\u4e0b\u662f\u60a8\u53ef\u4ee5\u4f7f\u7528\u4f20\u64ad\u8fd0\u7b97\u7b26\u6267\u884c\u7684\u64cd\u4f5c\u7684\u5217\u8868<\/p>\n
\u51fd\u6570\u8c03\u7528\u4e2d\u7684\u6269\u5c55\u8bed\u6cd5<\/h4>\n
\/*Spread Syntax in Function Calls *\/\nconst add = (x,y,z) =&gt; x+y+z\n\nconst args = [1,2,3]\n\nadd(...args) \n\/\/ 6\n\n<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u6570\u7ec4\u6587\u5b57\u4e2d\u7684\u6269\u5c55\u8bed\u6cd5<\/h4>\n
\/* Spread in Array Literals *\/\n\nconst twoAndThree = ['two', 'three']; \nconst numbers = ['one', ...twoAndThree, 'four', 'five']; \n\/\/ [\"one\", \"two\", \"three\", \"four\", \"five\"]\n\n<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u5bf9\u8c61\u6587\u5b57\u4e2d\u7684\u6269\u5c55\u8bed\u6cd5<\/h4>\n
\/* Spread in Object Literals *\/\n\nconst contactName = {\n  name: {\n    first: \"Foo\",\n    middle: \"Lux\",\n    last: \"Bar\"\n  }\n}\nconst contactData = {\n  email: \"fooluxbar@example.com\",\n  phone: \"1234567890\"\n}\n\nconst contact = {...contactName, ...contactData}\n\/* { \n    name: {\n        first: \"Foo\",\n        middle: \"Lux\",\n        last: \"Bar\"\n    }\n    email: \"fooluxbar@example.com\"\n    phone: \"1234567890\"\n  }\n  \n*\/\n        \n<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u6211\u4e2a\u4eba\u559c\u6b22\u4e09\u4e2a\u70b9\u53ef\u4ee5\u8ba9\u60a8\u66f4\u8f7b\u677e\u5730\u5c06\u73b0\u6709\u9053\u5177\u4f20\u9012\u7ed9\u5b50\u7ec4\u4ef6\u6216\u521b\u5efa\u65b0\u9053\u5177\u7684\u65b9\u5f0f\u3002<\/p>\n<\/p>\n
React \u4e2d\u7684\u6269\u5c55\u8fd0\u7b97\u7b26<\/h4>\n
const ParentComponent = (props) =&gt; {\n  const newProps = { foo: 'default' };\n  \n  return (\n      <childcomponent><\/childcomponent>\n  )\n}\n<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u73b0\u5728\u6211\u4eec\u5df2\u7ecf\u4e86\u89e3\u4e86\u6784\u5efa HOC \u7684\u57fa\u672c ES6 \u8bed\u6cd5\uff0c\u8ba9\u6211\u4eec\u770b\u770b\u5b83\u4eec\u662f\u4ec0\u4e48\u3002<\/p>\n
\u9ad8\u9636\u51fd\u6570<\/h2>\n
\u4ec0\u4e48\u662f\u9ad8\u9636\u51fd\u6570\uff1f\u7ef4\u57fa\u767e\u79d1\u6709\u4e00\u4e2a\u7b80\u5355\u7684\u5b9a\u4e49\uff1a<\/p>\n
\n  \u5728\u6570\u5b66\u548c\u8ba1\u7b97\u673a\u79d1\u5b66\u4e2d\uff0c\u9ad8\u9636\u51fd\u6570\uff08\u4e5f\u79f0\u4e3a\u6cdb\u51fd\u3001\u51fd\u6570\u5f62\u5f0f\u6216\u51fd\u5b50\uff09\u662f\u4e00\u79cd\u63a5\u53d7\u4e00\u4e2a\u6216\u591a\u4e2a\u51fd\u6570\u4f5c\u4e3a\u53c2\u6570\u6216\u8fd4\u56de\u4e00\u4e2a\u51fd\u6570\u4f5c\u4e3a\u5176\u7ed3\u679c\u6216\u4e24\u8005\u517c\u800c\u6709\u4e4b\u7684\u51fd\u6570\u3002\n<\/p><\/blockquote>\n
\u60a8\u4e4b\u524d\u53ef\u80fd\u4ee5\u67d0\u79cd\u5f62\u5f0f\u5728 JavaScript \u4e2d\u4f7f\u7528\u8fc7\u9ad8\u9636\u51fd\u6570\uff0c\u56e0\u4e3a\u8fd9\u5c31\u662f JavaScript \u7684\u5de5\u4f5c\u65b9\u5f0f\u3002\u5c06\u533f\u540d\u51fd\u6570\u6216\u56de\u8c03\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u6216\u8fd4\u56de\u53e6\u4e00\u4e2a\u51fd\u6570\u7684\u51fd\u6570 – \u6240\u6709\u8fd9\u4e9b\u90fd\u5c5e\u4e8e\u9ad8\u9636\u51fd\u6570\u3002\u4e0b\u9762\u7684\u4ee3\u7801\u521b\u5efa\u4e86\u4e00\u4e2a\u672c\u8d28\u4e0a\u66f4\u9ad8\u9636\u7684\u8ba1\u7b97\u5668\u51fd\u6570\u3002 <\/p>\n
const calculator = (inputFunction) =&gt; \n    \t(...args) =&gt; {\n        \n       const resultValue = inputFunction(...args);\n       console.log(resultValue);\n          \n       return resultValue;\n        }\n\nconst add = (...all) =&gt; {\n\treturn all.reduce( (a,b) =&gt; a+b,0)\t;\n  \n\t}\n  \n \nconst multiply = (...all) =&gt; {\n  return all.reduce((a,b)=&gt; a*b,1);\n \n  }\n<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u8ba9\u6211\u4eec\u66f4\u6df1\u5165\u5730\u4e86\u89e3\u4e00\u4e0b\u8fd9\u4e00\u70b9\u3002 calculator() \u63a5\u53d7\u4e00\u4e2a\u51fd\u6570\u4f5c\u4e3a\u8f93\u5165\u5e76\u8fd4\u56de\u53e6\u4e00\u4e2a\u51fd\u6570\u2014\u2014\u8fd9\u5b8c\u5168\u7b26\u5408\u6211\u4eec\u5bf9\u9ad8\u9636\u51fd\u6570\u7684\u5b9a\u4e49\u3002\u56e0\u4e3a\u6211\u4eec\u4f7f\u7528\u4e86\u5269\u4f59\u53c2\u6570\u8bed\u6cd5\uff0c\u6240\u4ee5\u8fd4\u56de\u7684\u51fd\u6570\u5c06\u5176\u6240\u6709\u53c2\u6570\u6536\u96c6\u5728\u4e00\u4e2a\u6570\u7ec4\u4e2d\u3002 <\/p>\n
\u7136\u540e\uff0c\u4f7f\u7528\u4f20\u9012\u7684\u6240\u6709\u53c2\u6570\u8c03\u7528\u8f93\u5165\u51fd\u6570\uff0c\u5e76\u5c06\u8f93\u51fa\u8bb0\u5f55\u5230\u63a7\u5236\u53f0\u3002\u6240\u4ee5\u8ba1\u7b97\u5668\u662f\u4e00\u4e2a\u67ef\u91cc\u5316\u7684\u9ad8\u9636\u51fd\u6570\uff0c\u4f60\u53ef\u4ee5\u50cf\u8fd9\u6837\u4f7f\u7528\u8ba1\u7b97\u5668\uff1a<\/p>\n
calculator(multiply)(2,4);\n\/\/ returns 8\n\ncalculator(add)(3,6,9,12,15,18); \n\/\/ returns 63\n<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u63d2\u5165\u4e00\u4e2a\u51fd\u6570\uff0c\u4f8b\u5982 add() \u6216 multiply() \u548c\u4efb\u610f\u6570\u91cf\u7684\u53c2\u6570\uff0c\u4ee5\u53ca calculator()\u5c06\u4ece\u90a3\u91cc\u62ff\u8d70\u5b83\u3002\u6240\u4ee5\u8ba1\u7b97\u5668\u662f\u4e00\u4e2a\u6269\u5c55\u4e86 add() \u548c multiply() \u529f\u80fd\u7684\u5bb9\u5668\u3002\u5b83\u4f7f\u6211\u4eec\u80fd\u591f\u5728\u66f4\u9ad8\u6216\u66f4\u62bd\u8c61\u7684\u5c42\u9762\u4e0a\u5904\u7406\u95ee\u9898\u3002\u4e4d\u4e00\u770b\uff0c\u8fd9\u79cd\u65b9\u6cd5\u7684\u597d\u5904\u5305\u62ec\uff1a<\/p>\n
    \n
  1. \u4ee3\u7801\u53ef\u4ee5\u5728\u591a\u4e2a\u51fd\u6570\u4e2d\u91cd\u590d\u4f7f\u7528\u3002<\/li>\n
  2. \u60a8\u53ef\u4ee5\u5728\u5bb9\u5668\u7ea7\u522b\u6dfb\u52a0\u6240\u6709\u7b97\u672f\u8fd0\u7b97\u901a\u7528\u7684\u989d\u5916\u529f\u80fd\u3002 <\/li>\n
  3. \u66f4\u5177\u53ef\u8bfb\u6027\uff0c\u5e76\u4e14\u80fd\u66f4\u597d\u5730\u8868\u8fbe\u7a0b\u5e8f\u5458\u7684\u610f\u56fe\u3002<\/li>\n<\/ol>\n
    \u73b0\u5728\u6211\u4eec\u5bf9\u9ad8\u9636\u51fd\u6570\u6709\u4e86\u4e00\u4e2a\u5f88\u597d\u7684\u4e86\u89e3\uff0c\u8ba9\u6211\u4eec\u770b\u770b\u9ad8\u9636\u7ec4\u4ef6\u7684\u80fd\u529b\u3002<\/p>\n
    \u9ad8\u9636\u7ec4\u4ef6<\/h2>\n
    \u9ad8\u9636\u7ec4\u4ef6\u662f\u4e00\u4e2a\u63a5\u53d7\u7ec4\u4ef6\u4f5c\u4e3a\u53c2\u6570\u5e76\u8fd4\u56de\u8be5\u7ec4\u4ef6\u7684\u6269\u5c55\u7248\u672c\u7684\u51fd\u6570\u3002 <\/p>\n
    (InputComponent) =&gt; {\n    return ExtendedComponent \n    }\n    \n\/\/ or alternatively\n\nInputComponent =&gt; ExtendedComponent\n\n<\/pre>\n
      \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
    \u6269\u5c55\u7ec4\u4ef6 \u7ec4\u6210<\/em> InputComponent\u3002 ExtendedComponent \u5c31\u50cf\u4e00\u4e2a\u5bb9\u5668\u3002\u5b83\u5448\u73b0 InputComponent\uff0c\u4f46\u56e0\u4e3a\u6211\u4eec\u8fd4\u56de\u4e00\u4e2a\u65b0\u7ec4\u4ef6\uff0c\u6240\u4ee5\u5b83\u6dfb\u52a0\u4e86\u4e00\u4e2a\u989d\u5916\u7684\u62bd\u8c61\u5c42\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u6b64\u5c42\u6dfb\u52a0\u72b6\u6001\u3001\u884c\u4e3a\u751a\u81f3\u6837\u5f0f\u3002\u5982\u679c\u60a8\u613f\u610f\uff0c\u60a8\u751a\u81f3\u53ef\u4ee5\u51b3\u5b9a\u6839\u672c\u4e0d\u6e32\u67d3 InputComponent \u2014 HOC \u80fd\u591f\u505a\u5230\u8fd9\u4e00\u70b9\u4ee5\u53ca\u66f4\u591a\u3002<\/p>\n
    \u4e0b\u9762\u7684\u56fe\u7247\u5e94\u8be5\u53ef\u4ee5\u6d88\u9664\u6df7\u4e71\uff08\u5982\u679c\u6709\u7684\u8bdd\uff09\u3002<\/p>\n
    \"React<\/p>\n
    \u7406\u8bba\u5df2\u7ecf\u8bb2\u5b8c\u4e86\uff0c\u8ba9\u6211\u4eec\u5f00\u59cb\u770b\u4ee3\u7801\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u975e\u5e38\u7b80\u5355\u7684 HOC \u793a\u4f8b\uff0c\u5b83\u5c06\u8f93\u5165\u7ec4\u4ef6\u5305\u88c5\u5728 <\/p>\n
      \u6807\u8bb0\u5468\u56f4\u3002\u4ece\u8fd9\u91cc\u5f00\u59cb\uff0c\u6211\u5c06\u628a InputComponent \u79f0\u4e3a WrappedComponent\uff0c\u56e0\u4e3a\u8fd9\u662f\u60ef\u4f8b\u3002\u4e0d\u8fc7\uff0c\u60a8\u53ef\u4ee5\u968f\u610f\u547d\u540d\u5b83\u3002 <\/p>\n
    \/* The `with` prefix for the function name is a naming convention.\nYou can name your function anything you want as long as it's meaningful \n*\/\n\nconst withGreyBg = WrappedComponent =&gt; class NewComponent extends Component {\n  \n  const bgStyle = {\n  \t\tbackgroundColor: 'grey',\n\t};\n    \n  render() {\n    return (\n      <div classname=\"wrapper\" style=\"{bgStyle}\">\n\n        <wrappedcomponent><\/wrappedcomponent>\n<\/div>\n    );\n  }\n};\n\nconst SmallCardWithGreyBg = withGreyBg(SmallCard);\nconst BigCardWithGreyBg = withGreyBg(BigCard);\nconst HugeCardWithGreyBg = withGreyBg(HugeCard);\n\nclass CardsDemo extends Component {\n    render() {\n        <smallcardwithgreybg><\/smallcardwithgreybg><bigcardwithgreybg><\/bigcardwithgreybg><hugecardwithgreybg><\/hugecardwithgreybg>\n    }\n}\n<\/pre>\n
      \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
    withGreyBg \u51fd\u6570\u5c06\u4e00\u4e2a\u7ec4\u4ef6\u4f5c\u4e3a\u8f93\u5165\u5e76\u8fd4\u56de\u4e00\u4e2a\u65b0\u7ec4\u4ef6\u3002\u6211\u4eec\u4e0d\u662f\u76f4\u63a5\u7ec4\u5408 Card \u7ec4\u4ef6\u5e76\u5c06\u6837\u5f0f\u6807\u7b7e\u9644\u52a0\u5230\u6bcf\u4e2a\u5355\u72ec\u7684\u7ec4\u4ef6\uff0c\u800c\u662f\u521b\u5efa\u4e00\u4e2a HOC \u6765\u5b9e\u73b0\u6b64\u76ee\u7684\u3002\u9ad8\u9636\u7ec4\u4ef6\u5305\u88c5\u539f\u59cb\u7ec4\u4ef6\u5e76\u5728\u5176\u5468\u56f4\u6dfb\u52a0 <\/p>\n
      \u6807\u7b7e\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u8fd9\u91cc\u4f60\u5fc5\u987b\u624b\u52a8\u5c06 props \u5206\u4e24\u5c42\u4f20\u9012\u4e0b\u53bb\u3002\u6211\u4eec\u6ca1\u6709\u505a\u4efb\u4f55\u82b1\u54e8\u7684\u4e8b\u60c5\uff0c\u4f46\u8fd9\u5c31\u662f\u6b63\u5e38\u7684 HOC \u7684\u6837\u5b50\u3002\u4e0b\u56fe\u66f4\u8be6\u7ec6\u5730\u6f14\u793a\u4e86 withGreyBg() \u793a\u4f8b\u3002 <\/p>\n
    \"React<\/p>\n
    \u867d\u7136\u8fd9\u76ee\u524d\u770b\u8d77\u6765\u4e0d\u662f\u7279\u522b\u6709\u7528\uff0c\u4f46\u597d\u5904\u5e76\u4e0d\u5c0f\u3002\u8003\u8651\u8fd9\u79cd\u60c5\u51b5\u3002\u60a8\u6b63\u5728\u4f7f\u7528 React \u8def\u7531\u5668\uff0c\u5e76\u4e14\u9700\u8981\u4fdd\u62a4\u67d0\u4e9b\u8def\u7531 – \u5982\u679c\u7528\u6237\u672a\u7ecf\u8fc7\u8eab\u4efd\u9a8c\u8bc1\uff0c\u5219\u5bf9\u8fd9\u4e9b\u8def\u7531\u7684\u6240\u6709\u8bf7\u6c42\u90fd\u5e94\u91cd\u5b9a\u5411\u5230 \/login\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 HOC \u6765\u6709\u6548\u7ba1\u7406\u53d7\u4fdd\u62a4\u7684\u8def\u7531\uff0c\u800c\u4e0d\u662f\u91cd\u590d\u8eab\u4efd\u9a8c\u8bc1\u4ee3\u7801\u3002\u597d\u5947\u60f3\u77e5\u9053\u600e\u4e48\u505a\u5417\uff1f\u6211\u4eec\u5c06\u5728\u4e0b\u4e00\u4e2a\u6559\u7a0b\u4e2d\u4ecb\u7ecd\u8fd9\u4e00\u70b9\u4ee5\u53ca\u66f4\u591a\u5185\u5bb9\u3002<\/p>\n<\/p>\n
    \u6ce8\u610f\uff1aECMAScript \u4e2d\u63d0\u51fa\u4e86\u4e00\u4e2a\u79f0\u4e3a\u88c5\u9970\u5668\u7684\u529f\u80fd\uff0c\u53ef\u4ee5\u8f7b\u677e\u4f7f\u7528 HOC\u3002\u4f46\u662f\uff0c\u5b83\u4ecd\u7136\u662f\u4e00\u4e2a\u5b9e\u9a8c\u6027\u529f\u80fd\uff0c\u56e0\u6b64\u6211\u51b3\u5b9a\u4e0d\u5728\u672c\u6559\u7a0b\u4e2d\u4f7f\u7528\u5b83\u3002\u5982\u679c\u60a8\u4f7f\u7528\u7684\u662f <\/em>create-react-app<\/em><\/strong>\uff0c\u5219\u9700\u8981\u5148\u5f39\u51fa\u624d\u80fd\u4f7f\u7528\u88c5\u9970\u5668\u3002\u5982\u679c\u60a8\u8fd0\u884c\u7684\u662f\u6700\u65b0\u7248\u672c\u7684 Babel (Babel 7)\uff0c\u60a8\u6240\u9700\u8981\u505a\u7684\u5c31\u662f\u5b89\u88c5 babel-preset-stage-0<\/em> \u7136\u540e\u5c06\u5176\u6dfb\u52a0\u5230 <\/em>webpack.config.dev.js<\/em><\/strong> \u7684\u63d2\u4ef6\u5217\u8868\u4e2d\uff0c\u5982\u4e0b\u6240\u793a\u3002 <\/em><\/em><\/p>\n
    \/\/ Process JS with Babel.\n        {\n            test: \/.(js|jsx|mjs)$\/,\n            include: paths.appSrc,\n            loader: require.resolve('babel-loader'),\n            options: {\n              \n              \/\/ This is a feature of `babel-loader` for webpack (not Babel itself).\n              \/\/ It enables caching results in .\/node_modules\/.cache\/babel-loader\/\n              \/\/ directory for faster rebuilds.\n              cacheDirectory: true,\n              presets: ['stage-0']\n        },\n<\/pre>\n
      \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
    \u6458\u8981<\/h2>\n<\/p>\n
    \u5728\u672c\u6559\u7a0b\u4e2d\uff0c\u6211\u4eec\u5b66\u4e60\u4e86 HOC \u7684\u57fa\u672c\u6982\u5ff5\u3002 HOC \u662f\u6784\u5efa\u53ef\u91cd\u7528\u7ec4\u4ef6\u7684\u6d41\u884c\u6280\u672f\u3002\u6211\u4eec\u9996\u5148\u8ba8\u8bba\u57fa\u672c\u7684 ES6 \u8bed\u6cd5\uff0c\u4ee5\u4fbf\u60a8\u66f4\u5bb9\u6613\u4e60\u60ef\u7bad\u5934\u51fd\u6570\u5e76\u7f16\u5199\u73b0\u4ee3 JavaScript \u4ee3\u7801\u3002 <\/p>\n<\/p>\n
    \u7136\u540e\u6211\u4eec\u4e86\u89e3\u4e86\u9ad8\u9636\u51fd\u6570\u53ca\u5176\u5de5\u4f5c\u539f\u7406\u3002\u6700\u540e\uff0c\u6211\u4eec\u63a5\u89e6\u4e86\u9ad8\u9636\u7ec4\u4ef6\u5e76\u4ece\u5934\u5f00\u59cb\u521b\u5efa\u4e86 HOC\u3002 <\/p>\n
    \u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u901a\u8fc7\u5b9e\u9645\u793a\u4f8b\u4ecb\u7ecd\u4e0d\u540c\u7684 HOC \u6280\u672f\u3002\u5728\u90a3\u4e4b\u524d\u8bf7\u7ee7\u7eed\u5173\u6ce8\u3002\u5728\u8bc4\u8bba\u90e8\u5206\u5206\u4eab\u4f60\u7684\u60f3\u6cd5\u3002 <\/p>\n
    \u4ee5\u4e0a\u5c31\u662fReact \u4e2d\u9ad8\u9636\u7ec4\u4ef6\u7684\u53cb\u597d\u4ecb\u7ecd\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u9ad8\u9636\u7ec4\u4ef6\uff08hoc\uff09\u662f react \u4e2d\u4e00\u9879\u6709\u8da3\u7684\u6280\u672f\uff0c\u7528\u4e8e\u91cd\u6784\u5171\u4eab\u51e0\u4e4e\u76f8\u540c\u903b\u8f91\u7684\u7c7b\u4f3c\u7ec4\u4ef6\u3002\u6211\u77e5\u9053\u8fd9\u542c\u8d77\u6765\u5f88\u62bd\u8c61\u800c\u4e14\u5f88\u9ad8\u7ea7\u3002\u7136\u800c\uff0c\u5b83\u662f\u4e00\u79cd\u5e76\u975e\u7279\u5b9a\u4e8e react \u7684\u67b6\u6784\u6a21\u5f0f\uff0c\u56e0\u6b64\u60a8\u53ef\u4ee5\u4f7f\u7528\u8be5\u65b9\u6cd5\u6765\u505a\u5f88\u591a\u4e8b\u60c5\u3002 \u4f8b\u5982\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u5b83\u5411\u67d0\u4e2a\u7ec4\u4ef6\u6dfb\u52a0\u52a0\u8f7d\u6307\u793a\u5668\uff0c\u800c\u65e0\u9700\u8c03\u6574\u539f\u59cb\u7ec4\u4ef6\uff0c\u6216\u8005\u60a8\u53ef\u4ee5\u9690\u85cf\u7ec4\u4ef6\u7684\u5c5e\u6027\u4ee5\u4f7f\u5176\u4e0d\u90a3\u4e48\u5197\u957f\u3002\u5e94\u7528\u7a0b\u5e8f\u6709\u5f88\u591a\uff0c\u6211\u8bd5\u56fe\u5728\u672c\u6559\u7a0b\u4e2d\u4ecb\u7ecd\u5176\u4e2d\u7684\u5927\u90e8\u5206\u3002 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