{"id":14740,"date":"2024-02-13T12:06:50","date_gmt":"2024-02-13T08:36:50","guid":{"rendered":"https:\/\/www.itpiran.net\/blog\/?p=14740"},"modified":"2024-02-17T10:35:48","modified_gmt":"2024-02-17T07:05:48","slug":"what-is-react-js","status":"publish","type":"post","link":"https:\/\/www.itpiran.net\/blog\/zh\/tutorials\/what-is-react-js\/","title":{"rendered":"React.js\u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"<h2 id=\"%d9%85%d9%82%d8%af%d9%85%d9%87\">\u4ecb\u7ecd<\/h2>\n<p>\u5982\u4eca\uff0c\u524d\u7aef\u6846\u67b6\u548c\u5e93\u6b63\u6210\u4e3a\u73b0\u4ee3 Web \u5f00\u53d1\u6280\u672f\u6808\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002React.js \u5c31\u662f\u4e00\u4e2a\u524d\u7aef\u5e93\uff0c\u5b83\u5df2\u9010\u6e10\u6210\u4e3a JavaScript \u793e\u533a\u4e2d\u73b0\u4ee3 Web \u5f00\u53d1\u7684\u9996\u9009\u6846\u67b6\u3002.<\/p>\n<h2 id=\"react-js-%da%86%db%8c%d8%b3%d8%aa%d8%9f\">React.js\u662f\u4ec0\u4e48\uff1f<\/h2>\n<p>React.js \u662f\u7531 Facebook \u7cbe\u5fc3\u6253\u9020\u7684\u5f00\u6e90 JavaScript \u5e93\uff0c\u65e8\u5728\u7b80\u5316\u6784\u5efa\u4ea4\u4e92\u5f0f\u7528\u6237\u754c\u9762\u7684\u590d\u6742\u8fc7\u7a0b\u3002\u60a8\u53ef\u4ee5\u5c06\u4f7f\u7528 React \u6784\u5efa\u7684\u7528\u6237\u754c\u9762\u89c6\u4e3a\u4e00\u7cfb\u5217\u7ec4\u4ef6\u7684\u96c6\u5408\uff0c\u6bcf\u4e2a\u7ec4\u4ef6\u8d1f\u8d23\u8f93\u51fa\u4e00\u5c0f\u6bb5\u53ef\u91cd\u7528\u7684 HTML \u4ee3\u7801\u3002.<\/p>\n<p>\u5728 React \u4e2d\uff0c\u4f60\u901a\u8fc7\u521b\u5efa\u53ef\u91cd\u7528\u7684\u7ec4\u4ef6\u6765\u5f00\u53d1\u5e94\u7528\u7a0b\u5e8f\uff0c\u4f60\u53ef\u4ee5\u628a\u8fd9\u4e9b\u7ec4\u4ef6\u60f3\u8c61\u6210\u72ec\u7acb\u7684\u4e50\u9ad8\u79ef\u6728\u3002\u8fd9\u4e9b\u7ec4\u4ef6\u662f\u6700\u7ec8\u754c\u9762\u7684\u5404\u4e2a\u7ec4\u6210\u90e8\u5206\uff0c\u7ec4\u88c5\u8d77\u6765\u5c31\u6784\u6210\u4e86\u5e94\u7528\u7a0b\u5e8f\u7684\u5b8c\u6574\u7528\u6237\u754c\u9762\u3002.<\/p>\n<p>React \u5728\u5e94\u7528\u7a0b\u5e8f\u4e2d\u7684\u4e3b\u8981\u4f5c\u7528\u662f\u7ba1\u7406\u5e94\u7528\u7a0b\u5e8f\u7684\u89c6\u56fe\u5c42\uff0c\u63d0\u4f9b\u6700\u4f73\u3001\u6700\u9ad8\u6548\u7684\u6e32\u67d3\u5b9e\u73b0\uff0c\u8fd9\u4e0e\u6a21\u578b-\u89c6\u56fe-\u63a7\u5236\u5668 (MVC) \u6a21\u5f0f\u4e2d\u7684 V \u975e\u5e38\u76f8\u4f3c\u3002React.js \u9f13\u52b1\u5f00\u53d1\u8005\u5c06\u590d\u6742\u7684\u7528\u6237\u754c\u9762\u5206\u89e3\u6210\u53ef\u91cd\u7528\u7684\u72ec\u7acb\u7ec4\u4ef6\uff0c\u800c\u4e0d\u662f\u5c06\u6574\u4e2a\u7528\u6237\u754c\u9762\u89c6\u4e3a\u4e00\u4e2a\u6574\u4f53\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0cReactJS \u6846\u67b6\u5c06 JavaScript \u7684\u901f\u5ea6\u548c\u6548\u7387\u4e0e\u66f4\u9ad8\u6548\u7684 DOM \u64cd\u4f5c\u65b9\u5f0f\u76f8\u7ed3\u5408\uff0c\u4ece\u800c\u66f4\u5feb\u5730\u6e32\u67d3\u7f51\u9875\u5e76\u521b\u5efa\u9ad8\u5ea6\u52a8\u6001\u4e14\u54cd\u5e94\u8fc5\u901f\u7684 Web \u5e94\u7528\u7a0b\u5e8f\u3002.<\/p>\n<h2 id=\"%d8%aa%d8%a7%d8%b1%db%8c%d8%ae%da%86%d9%87-%d9%85%d8%ae%d8%aa%d8%b5%d8%b1%db%8c-%d8%a7%d8%b2-react-js\">React.js \u7b80\u53f2<\/h2>\n<p>2011\u5e74\uff0cFacebook\u62e5\u6709\u5e9e\u5927\u7684\u7528\u6237\u7fa4\uff0c\u9762\u4e34\u7740\u4e00\u9879\u8270\u5de8\u7684\u4efb\u52a1\u3002\u5b83\u5e0c\u671b\u901a\u8fc7\u521b\u5efa\u4e00\u4e2a\u66f4\u52a8\u6001\u3001\u54cd\u5e94\u66f4\u5feb\u3001\u6548\u7387\u66f4\u9ad8\u7684\u754c\u9762\uff0c\u4e3a\u7528\u6237\u63d0\u4f9b\u66f4\u4e30\u5bcc\u7684\u7528\u6237\u4f53\u9a8c\u3002.<\/p>\n<p>Facebook \u7684\u8f6f\u4ef6\u5de5\u7a0b\u5e08 Jordan Walk \u521b\u5efa React \u7684\u76ee\u7684\u6b63\u662f\u4e3a\u4e86\u5b9e\u73b0\u8fd9\u4e00\u70b9\u3002React \u63d0\u4f9b\u4e86\u4e00\u79cd\u66f4\u7cfb\u7edf\u3001\u66f4\u7ed3\u6784\u5316\u7684\u65b9\u5f0f\u6765\u521b\u5efa\u5177\u6709\u53ef\u91cd\u7528\u7ec4\u4ef6\u7684\u52a8\u6001\u4ea4\u4e92\u5f0f\u7528\u6237\u754c\u9762\uff0c\u4ece\u800c\u7b80\u5316\u4e86\u5f00\u53d1\u6d41\u7a0b\u3002.<\/p>\n<p>Facebook \u7684\u65b0\u95fb\u63a8\u9001\u662f\u7b2c\u4e00\u4e2a\u4f7f\u7528 React \u7684\u5e94\u7528\u3002\u51ed\u501f\u5176\u9769\u547d\u6027\u7684 DOM \u64cd\u4f5c\u548c\u7528\u6237\u754c\u9762\u8bbe\u8ba1\uff0cReact \u5f7b\u5e95\u6539\u53d8\u4e86 Facebook \u7684 Web \u5f00\u53d1\u65b9\u5f0f\uff0c\u5e76\u5728\u5411\u5f00\u6e90\u793e\u533a\u53d1\u5e03\u540e\u8fc5\u901f\u5728 JavaScript \u751f\u6001\u7cfb\u7edf\u4e2d\u6d41\u884c\u8d77\u6765\u3002.<\/p>\n<h2 id=\"react-js-%da%86%d9%87-%da%a9%d8%a7%d8%b1%db%8c-%d8%a7%d9%86%d8%ac%d8%a7%d9%85-%d9%85%db%8c-%d8%af%d9%87%d8%af%d8%9f\">React.js \u662f\u505a\u4ec0\u4e48\u7684\uff1f<\/h2>\n<p>\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u60a8\u53ef\u4ee5\u901a\u8fc7\u5728\u6d4f\u89c8\u5668\u4e2d\u8f93\u5165\u7f51\u9875\u7684\u7f51\u5740\u6765\u8bf7\u6c42\u8be5\u7f51\u9875\u3002\u7136\u540e\uff0c\u60a8\u7684\u6d4f\u89c8\u5668\u4f1a\u5411\u670d\u52a1\u5668\u53d1\u9001\u8bf7\u6c42\u4ee5\u83b7\u53d6\u8be5\u7f51\u9875\uff0c\u670d\u52a1\u5668\u4f1a\u63d0\u4f9b\u8be5\u7f51\u9875\u3002\u5982\u679c\u60a8\u70b9\u51fb\u8be5\u7f51\u9875\u4e0a\u7684\u94fe\u63a5\u8df3\u8f6c\u5230\u7f51\u7ad9\u4e0a\u7684\u53e6\u4e00\u4e2a\u9875\u9762\uff0c\u5219\u4f1a\u5411\u670d\u52a1\u5668\u53d1\u9001\u65b0\u7684\u8bf7\u6c42\u4ee5\u83b7\u53d6\u8be5\u65b0\u9875\u9762\u3002.<\/p>\n<p>\u8fd9\u79cd\u5728\u6d4f\u89c8\u5668\uff08\u5ba2\u6237\u7aef\uff09\u548c\u670d\u52a1\u5668\u4e4b\u95f4\u6765\u56de\u52a0\u8f7d\u7684\u6a21\u5f0f\uff0c\u5728\u4f60\u5c1d\u8bd5\u8bbf\u95ee\u7f51\u7ad9\u4e0a\u7684\u6bcf\u4e2a\u65b0\u9875\u9762\u6216\u8d44\u6e90\u65f6\u90fd\u4f1a\u6301\u7eed\u8fdb\u884c\u3002\u8fd9\u79cd\u5178\u578b\u7684\u7f51\u7ad9\u52a0\u8f7d\u65b9\u5f0f\u901a\u5e38\u6548\u679c\u4e0d\u9519\uff0c\u4f46\u5bf9\u4e8e\u6570\u636e\u91cf\u975e\u5e38\u5927\u7684\u7f51\u7ad9\u6765\u8bf4\uff0c\u6765\u56de\u91cd\u65b0\u52a0\u8f7d\u6574\u4e2a\u7f51\u9875\u4f1a\u9020\u6210\u5197\u4f59\uff0c\u5e76\u964d\u4f4e\u7528\u6237\u4f53\u9a8c\u3002.<\/p>\n<p>\u6b64\u5916\uff0c\u5728\u4f20\u7edf\u7684 JavaScript \u5e94\u7528\u7a0b\u5e8f\u4e2d\uff0c\u5f53\u6570\u636e\u53d1\u751f\u53d8\u5316\u65f6\uff0c\u9700\u8981\u624b\u52a8\u64cd\u4f5c DOM \u6765\u53cd\u6620\u8fd9\u4e9b\u53d8\u5316\u3002\u60a8\u5fc5\u987b\u8bc6\u522b\u54ea\u4e9b\u6570\u636e\u53d1\u751f\u4e86\u53d8\u5316\uff0c\u5e76\u66f4\u65b0 DOM \u4ee5\u53cd\u6620\u8fd9\u4e9b\u53d8\u5316\uff0c\u8fd9\u4f1a\u5bfc\u81f4\u9875\u9762\u91cd\u65b0\u52a0\u8f7d\u3002.<\/p>\n<p>React \u91c7\u7528\u4e86\u4e00\u79cd\u4e0d\u540c\u7684\u65b9\u6cd5\uff0c\u5b83\u5141\u8bb8\u4f60\u6784\u5efa\u6240\u8c13\u7684\u5355\u9875\u5e94\u7528\u7a0b\u5e8f (SPA)\u3002\u5355\u9875\u5e94\u7528\u7a0b\u5e8f\u5728\u9996\u6b21\u8bf7\u6c42\u65f6\u52a0\u8f7d\u5355\u4e2a HTML \u6587\u6863\u3002\u7136\u540e\uff0c\u5b83\u4f7f\u7528 JavaScript \u66f4\u65b0\u7f51\u9875\u4e2d\u9700\u8981\u66f4\u65b0\u7684\u7279\u5b9a\u90e8\u5206\u3001\u5185\u5bb9\u6216\u4e3b\u4f53\u3002.<\/p>\n<p>\u8fd9\u79cd\u6a21\u5f0f\u88ab\u79f0\u4e3a\u5ba2\u6237\u7aef\u8def\u7531\uff0c\u56e0\u4e3a\u5ba2\u6237\u7aef\u65e0\u9700\u5728\u7528\u6237\u6bcf\u6b21\u8bf7\u6c42\u65b0\u9875\u9762\u65f6\u90fd\u91cd\u65b0\u52a0\u8f7d\u6574\u4e2a\u7f51\u9875\u3002React \u4f1a\u5c06\u8bf7\u6c42\u5206\u89e3\uff0c\u4ec5\u83b7\u53d6\u9700\u8981\u66f4\u6539\u7684\u90e8\u5206\uff0c\u4ece\u800c\u5728\u4e0d\u91cd\u65b0\u52a0\u8f7d\u6574\u4e2a\u9875\u9762\u7684\u60c5\u51b5\u4e0b\u5b8c\u6210\u66f4\u6539\u3002\u8fd9\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5e26\u6765\u66f4\u597d\u7684\u6027\u80fd\u548c\u66f4\u52a8\u6001\u7684\u7528\u6237\u4f53\u9a8c\u3002.<\/p>\n<p>React \u4f9d\u8d56\u4e8e\u865a\u62df DOM\uff0c\u5b83\u662f\u771f\u5b9e DOM \u7684\u4e00\u4e2a\u526f\u672c\u3002\u6bcf\u5f53\u6570\u636e\u72b6\u6001\u53d1\u751f\u53d8\u5316\u65f6\uff0cReact \u7684\u865a\u62df DOM \u90fd\u4f1a\u7acb\u5373\u91cd\u65b0\u52a0\u8f7d\u4ee5\u53cd\u6620\u65b0\u7684\u53d8\u5316\u3002\u7136\u540e\uff0cReact \u4f1a\u5c06\u865a\u62df DOM \u4e0e\u771f\u5b9e DOM \u8fdb\u884c\u6bd4\u8f83\uff0c\u4ee5\u786e\u5b9a\u7a76\u7adf\u53d1\u751f\u4e86\u54ea\u4e9b\u53d8\u5316\u3002.<\/p>\n<p>React \u4f1a\u627e\u5230\u6210\u672c\u6700\u4f4e\u7684\u65b9\u5f0f\u6765\u66f4\u65b0\u5b9e\u9645\u7684 DOM\uff0c\u800c\u65e0\u9700\u91cd\u65b0\u6e32\u67d3\u6574\u4e2a DOM\u3002\u56e0\u6b64\uff0cReact \u7ec4\u4ef6\u548c UI \u53ef\u4ee5\u5feb\u901f\u53cd\u6620\u53d8\u5316\uff0c\u56e0\u4e3a\u65e0\u9700\u5728\u6bcf\u6b21\u66f4\u65b0\u65f6\u90fd\u91cd\u65b0\u52a0\u8f7d\u6574\u4e2a\u9875\u9762\u3002.<\/p>\n<h2 id=\"%d9%86%d8%ad%d9%88%d9%87-%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87-%d8%a7%d8%b2-react-js\">\u5982\u4f55\u4f7f\u7528 React.js<\/h2>\n<p>\u4e0e\u5176\u4ed6\u6846\u67b6\uff08\u4f8b\u5982 Angular\uff09\u4e0d\u540c\uff0cReact \u5bf9\u4ee3\u7801\u89c4\u8303\u6216\u6587\u4ef6\u7ec4\u7ec7\u65b9\u5f0f\u6ca1\u6709\u4e25\u683c\u7684\u89c4\u5b9a\u3002\u8fd9\u610f\u5473\u7740\u5f00\u53d1\u8005\u548c\u56e2\u961f\u53ef\u4ee5\u81ea\u7531\u5730\u8bbe\u5b9a\u6700\u9002\u5408\u4ed6\u4eec\u7684\u89c4\u8303\uff0c\u5e76\u4ee5\u4ed6\u4eec\u8ba4\u4e3a\u5408\u9002\u7684\u65b9\u5f0f\u5b9e\u73b0 React\u3002\u7531\u4e8e React \u7684\u7075\u6d3b\u6027\uff0c\u60a8\u53ef\u4ee5\u6839\u636e\u9700\u8981\u4f7f\u7528\u5176\u5168\u90e8\u6216\u90e8\u5206\u529f\u80fd\u3002.<\/p>\n<p>\u4f7f\u7528 React\uff0c\u60a8\u53ef\u4ee5\u521b\u5efa\u6309\u94ae\u3001\u754c\u9762\u7ec4\u4ef6\uff0c\u751a\u81f3\u6574\u4e2a\u5e94\u7528\u7a0b\u5e8f\u7684 UI\u3002\u60a8\u53ef\u4ee5\u9010\u6b65\u5c06\u5176\u96c6\u6210\u5230\u73b0\u6709\u5e94\u7528\u7a0b\u5e8f\u4e2d\uff0c\u5e76\u6dfb\u52a0\u4e00\u4e9b\u4ea4\u4e92\u529f\u80fd\uff1b\u6216\u8005\uff0c\u6839\u636e\u60a8\u7684\u9700\u6c42\uff0c\u4ece\u96f6\u5f00\u59cb\u6784\u5efa\u529f\u80fd\u5f3a\u5927\u7684 React \u5e94\u7528\u7a0b\u5e8f\u3002.<\/p>\n<h2 id=\"%d8%a7%d8%af%d8%ba%d8%a7%d9%85-react-%d8%af%d8%b1-%db%8c%da%a9-%d9%88%d8%a8-%d8%b3%d8%a7%db%8c%d8%aa-%d9%85%d9%88%d8%ac%d9%88%d8%af\">\u5c06 React \u96c6\u6210\u5230\u73b0\u6709\u7f51\u7ad9\u4e2d<\/h2>\n<p>\u5982\u679c\u60a8\u60f3\u4e3a\u7f51\u7ad9\u6dfb\u52a0\u52a8\u6001\u4ea4\u4e92\u529f\u80fd\uff0cReact \u662f\u4e00\u4e2a\u7edd\u4f73\u7684\u9009\u62e9\u3002\u901a\u8fc7\u96c6\u6210 React\uff0c\u60a8\u53ef\u4ee5\u521b\u5efa\u53ef\u91cd\u7528\u7684\u4ea4\u4e92\u5f0f\u7ec4\u4ef6\uff0c\u5e76\u5c06\u5176\u653e\u7f6e\u5728\u7f51\u7ad9\u7684\u4efb\u4f55\u4f4d\u7f6e\uff0c\u4f8b\u5982\u4fa7\u8fb9\u680f\u6216\u5c0f\u90e8\u4ef6\u3002\u4ee5\u4e0b\u662f\u5b9e\u73b0\u6b64\u76ee\u6807\u7684\u7b80\u8981\u6b65\u9aa4\u3002.<\/p>\n<h2 id=\"%d9%85%d8%b1%d8%ad%d9%84%d9%87-1-%d8%a7%d9%81%d8%b2%d9%88%d8%af%d9%86-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-%d9%87%d8%a7%db%8c-cdn-%d8%a8%d9%87-html\">\u6b65\u9aa4 1\uff1a\u5c06 CDN \u811a\u672c\u6dfb\u52a0\u5230 HTML<\/h2>\n<ul>\n<li>\u9996\u5148\u5c06 CDN \u4e2d\u7684 React \u6838\u5fc3\u5e93 API \u6dfb\u52a0\u5230\u7f51\u7ad9\u7684 HTML index \u6587\u4ef6\u4e2d\u3002.<\/li>\n<li>\u7136\u540e\u4ece CDN \u5bfc\u5165 React DOM\u3002\u8fd9\u662f\u4e3a\u4e86\u5c06\u7ec4\u4ef6\u6e32\u67d3\u5230\u6587\u6863\u5bf9\u8c61\u6a21\u578b (DOM) \u4e2d\u6240\u5fc5\u9700\u7684\u3002.<\/li>\n<li>\u63a5\u4e0b\u6765\uff0c\u4ece CDN \u6dfb\u52a0 Babel\uff0c\u5b83\u53ef\u4ee5\u8f6c\u6362 React \u4ee3\u7801\u4ee5\u786e\u4fdd\u6d4f\u89c8\u5668\u517c\u5bb9\u6027\u3002\u53e6\u5916\uff0c\u522b\u5fd8\u4e86\u4e0a\u4f20\u4f60\u7684 React \u7ec4\u4ef6\u6587\u4ef6\u3002.<\/li>\n<\/ul>\n<p>\u7b2c\u4e00\u6b65\u662f\u5c06\u4e24\u4e2a\u4e3b\u8981\u7684 CDN \u811a\u672c\u6dfb\u52a0\u5230\u7f51\u7ad9\u7684 HTML \u7d22\u5f15\u6587\u4ef6\u4e2d\u3002\u60a8\u9700\u8981\u8fd9\u4e9b\u811a\u672c\u624d\u80fd\u901a\u8fc7 CDN \u670d\u52a1\u5c06 React \u52a0\u8f7d\u5230\u60a8\u7684\u5e94\u7528\u7a0b\u5e8f\u4e2d\u3002.<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-html\" data-lang=\"HTML\"><code>&lt;script src=\"https:\/\/unpkg.com\/react@17\/umd\/react.development.js\" crossorigin&gt;&lt;\/script&gt;\r\n&lt;script src=\"https:\/\/unpkg.com\/react-dom@17\/umd\/react-dom.development.js\" crossorigin&gt;&lt;\/script&gt;\r\n&lt;script src='https:\/\/unpkg.com\/babel-standalone@6.26.0\/babel.js'&gt;&lt;\/script&gt;\r\n&lt;script type=\"text\/babel\" src=\"like_widget.js\"&gt;&lt;\/script&gt;\r\n<\/code><\/pre>\n<\/div>\n<h2 id=\"%d9%85%d8%b1%d8%ad%d9%84%d9%87-2-%d8%b9%d9%84%d8%a7%d9%85%d8%aa-%da%af%d8%b0%d8%a7%d8%b1%db%8c-%d9%85%da%a9%d8%a7%d9%86-%d8%b1%d9%86%d8%af%d8%b1-%d8%af%d8%b1-%d9%88%d8%a8-%d8%b3%d8%a7%db%8c%d8%aa\">\u6b65\u9aa4\u4e8c\uff1a\u5728\u60a8\u7684\u7f51\u7ad9\u4e0a\u6807\u8bb0\u6e32\u67d3\u4f4d\u7f6e<\/h2>\n<p>\u786e\u5b9a React \u7ec4\u4ef6\u5728 HTML \u4e2d\u7684\u6e32\u67d3\u4f4d\u7f6e\u3002\u8fd9\u53ef\u4ee5\u901a\u8fc7\u6dfb\u52a0\u4e00\u4e2a\u5143\u7d20\u6765\u5b9e\u73b0\u3002 &lt;div&gt; \u5b83\u4f7f\u7528\u4e86\u4e00\u4e2a\u552f\u4e00\u7684\u6807\u8bc6\u7b26\uff0c\u6211\u4eec\u5c06\u5728 React \u4ee3\u7801\u4e2d\u5f15\u7528\u8be5\u6807\u8bc6\u7b26\u3002.<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-html\" data-lang=\"HTML\"><code>&lt;!-- ... Your existing HTML markup ... --&gt;\r\n&lt;div id=\"like_widget_container\"&gt;&lt;\/div&gt;\r\n&lt;!-- ... Your existing HTML markup ... --&gt;\r\n<\/code><\/pre>\n<\/div>\n<h2 id=\"%d9%85%d8%b1%d8%ad%d9%84%d9%87-3-%d8%b3%d8%a7%d8%ae%d8%aa-%da%a9%d8%a7%d9%85%d9%be%d9%88%d9%86%d9%86%d8%aa-react\">\u6b65\u9aa4 3\uff1a\u6784\u5efa React \u7ec4\u4ef6<\/h2>\n<ul>\n<li>\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a like_widget.js \u7684 React \u7ec4\u4ef6\u3002.<\/li>\n<li>\u8be5\u7ec4\u4ef6\u5c06\u5305\u542b\u4e00\u4e2a\u7b80\u5355\u7684\u51fd\u6570\uff0c\u8be5\u51fd\u6570\u8fd4\u56de\u4e00\u4e2a JSX \u8bed\u53e5\uff0c\u7528\u4e8e\u6e32\u67d3\u6d88\u606f\u201cHello World\u201d\u3002.<\/li>\n<li>\u7136\u540e\u501f\u52a9 ReactDOM\uff0c\u6211\u4eec\u5c06\u6b64\u7ec4\u4ef6\u6e32\u67d3\u5230 DOM \u4e2d\uff0c\u76ee\u6807\u662f\u6211\u4eec\u4e4b\u524d\u5728 HTML \u4e2d\u8bbe\u7f6e\u7684\u552f\u4e00 ID\u3002.<\/li>\n<\/ul>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\"><code>\/\/ Custom React component function that returns a JSX syntax\r\nconst ActualWidget = () =&gt; Hello World;\r\n\/\/ Select the container\r\nconst container = document.getElementById(\"like_widget_container\");\r\n\/\/ Render the component to the DOM\r\nReactDOM.render(, container);\r\n<\/code><\/pre>\n<\/div>\n<p>\u8fd0\u884c\u8be5\u7a0b\u5e8f\u540e\uff0c\u6d4f\u89c8\u5668\u4f1a\u5728\u4e0b\u56fe\u4f60\u6807\u8bb0\u7684\u4f4d\u7f6e\u663e\u793a\u201cHello World\u201d\u3002.<\/p>\n<p><img  loading=\"lazy\"  decoding=\"async\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAApJREFUCNdjYAAAAAIAAeIhvDMAAAAASUVORK5CYII=\"  alt=\"\"  width=\"624\"  height=\"60\"  class=\"aligncenter wp-image-14741 size-full pk-lazyload\"  data-pk-sizes=\"auto\"  data-ls-sizes=\"auto, (max-width: 624px) 100vw, 624px\"  data-pk-src=\"https:\/\/cdn.itpiran.net\/2024\/02\/13114542\/What-Is-React.js_.webp\"  data-pk-srcset=\"https:\/\/cdn.itpiran.net\/2024\/02\/13114542\/What-Is-React.js_.webp 624w, https:\/\/cdn.itpiran.net\/2024\/02\/13114542\/What-Is-React.js_-300x29.webp 300w, https:\/\/cdn.itpiran.net\/2024\/02\/13114542\/What-Is-React.js_-110x11.webp 110w, https:\/\/cdn.itpiran.net\/2024\/02\/13114542\/What-Is-React.js_-200x19.webp 200w, https:\/\/cdn.itpiran.net\/2024\/02\/13114542\/What-Is-React.js_-380x37.webp 380w, https:\/\/cdn.itpiran.net\/2024\/02\/13114542\/What-Is-React.js_-255x25.webp 255w, https:\/\/cdn.itpiran.net\/2024\/02\/13114542\/What-Is-React.js_-550x53.webp 550w\" ><br \/>\n\u60a8\u53ef\u80fd\u5df2\u7ecf\u6ce8\u610f\u5230 ActualWidget \u51fd\u6570\u8fd4\u56de\u4e86\u4e00\u79cd\u540d\u4e3a JavaScript XML (JSX) \u7684\u7279\u6b8a\u8bed\u6cd5\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528 JSX \u4e0e React \u7ed3\u5408\u4f7f\u7528\uff0c\u8f7b\u677e\u5730\u5c06 HTML \u548c JavaScript \u7ed3\u5408\u8d77\u6765\u3002Facebook \u5f00\u53d1 JSX \u4f5c\u4e3a JavaScript \u7684\u8bed\u6cd5\u6269\u5c55\uff0c\u65e8\u5728\u901a\u8fc7\u5c06 HTML \u76f4\u63a5\u5d4c\u5165 JavaScript \u4ee3\u7801\u6765\u6269\u5c55\u5176\u529f\u80fd\u3002\u6709\u4e86 JSX\uff0c\u5c31\u65e0\u9700\u5c06 HTML \u548c JS \u4ee3\u7801\u5206\u5f00\uff0c\u56e0\u4e3a React \u5141\u8bb8\u60a8\u76f4\u63a5\u5728 JavaScript \u4ee3\u7801\u4e2d\u7f16\u5199\u58f0\u660e\u5f0f HTML\u3002.<\/p>\n<h2 id=\"%d8%a7%db%8c%d8%ac%d8%a7%d8%af-%db%8c%da%a9-react-app-%d8%aa%d9%85%d8%a7%d9%85-%d8%b9%db%8c%d8%a7%d8%b1\">\u521b\u5efa\u4e00\u4e2a\u529f\u80fd\u9f50\u5168\u7684 React \u5e94\u7528<\/h2>\n<p>\u867d\u7136\u4f60\u53ef\u4ee5\u8f7b\u677e\u5730\u5c06 React \u96c6\u6210\u5230\u73b0\u6709\u7684 Web \u5e94\u7528\u4e2d\u6765\u521b\u5efa\u754c\u9762\u7684\u5c0f\u90e8\u5206\uff0c\u4f46\u4f7f\u7528 React \u6784\u5efa\u5b8c\u6574\u7684 Web \u5e94\u7528\u66f4\u4e3a\u5b9e\u7528\u3002\u7136\u800c\uff0cReact \u7684\u786e\u6709\u4e00\u4e9b\u7e41\u7410\u7684\u5de5\u5177\u914d\u7f6e\u8981\u6c42\uff0c\u5728\u521b\u5efa\u65b0\u7684 React \u5e94\u7528\u65f6\uff0c\u8fd9\u4e9b\u914d\u7f6e\u5f80\u5f80\u4ee4\u4eba\u671b\u800c\u751f\u754f\u4e14\u5341\u5206\u7e41\u7410\u3002.<\/p>\n<p>\u5e78\u8fd0\u7684\u662f\uff0c\u60a8\u65e0\u9700\u5b66\u4e60\u8fd9\u4e9b\u6784\u5efa\u8bbe\u7f6e\u6216\u81ea\u884c\u914d\u7f6e\u6784\u5efa\u5de5\u5177\u3002Facebook \u521b\u5efa\u4e86\u4e00\u4e2a\u540d\u4e3a cre-react-app \u7684 Node \u547d\u4ee4\u884c\u5de5\u5177\uff0c\u53ef\u4ee5\u5e2e\u52a9\u60a8\u6784\u5efa React \u5e94\u7528\u3002\u8be5\u8f6f\u4ef6\u5305\u53ef\u8ba9\u60a8\u5f00\u7bb1\u5373\u7528\uff0c\u5e76\u4e3a React \u5e94\u7528\u63d0\u4f9b\u4e00\u81f4\u7684\u7ed3\u6784\uff0c\u65b9\u4fbf\u60a8\u5728\u4e0d\u540c\u7684 React \u9879\u76ee\u4e4b\u95f4\u5207\u6362\u3002.<\/p>\n<p>\u521b\u5efa\u4e00\u4e2a\u65b0\u7684 React \u9879\u76ee\u975e\u5e38\u7b80\u5355\uff0c\u53ea\u9700\u5728\u7ec8\u7aef\u4e2d\u8fd0\u884c\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\"><code>npx create-react-app my-new-app\r\ncd my-new-app\r\nnpm start\r\n<\/code><\/pre>\n<\/div>\n<h2 id=\"%d9%85%d8%ab%d8%a7%d9%84-%d9%87%d8%a7%db%8c-react-js\"><img  loading=\"lazy\"  decoding=\"async\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAApJREFUCNdjYAAAAAIAAeIhvDMAAAAASUVORK5CYII=\"  alt=\"\"  width=\"624\"  height=\"422\"  class=\"aligncenter wp-image-14742 size-full pk-lazyload\"  data-pk-sizes=\"auto\"  data-ls-sizes=\"auto, (max-width: 624px) 100vw, 624px\"  data-pk-src=\"https:\/\/cdn.itpiran.net\/2024\/02\/13115407\/What-Is-React.js_2.webp\"  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