{"id":38687,"date":"2023-06-20T03:35:29","date_gmt":"2023-02-27T13:23:00","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%8f%8d%e5%ba%94%e8%ae%a1%e6%95%b0%e5%a2%9e%e5%8a%a0\/"},"modified":"2024-04-30T09:43:48","modified_gmt":"2024-04-30T01:43:48","slug":"%e5%8f%8d%e5%ba%94%e8%ae%a1%e6%95%b0%e5%a2%9e%e5%8a%a0","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%8f%8d%e5%ba%94%e8%ae%a1%e6%95%b0%e5%a2%9e%e5%8a%a0\/","title":{"rendered":"\u53cd\u5e94\u8ba1\u6570\u589e\u52a0"},"content":{"rendered":"<p>\u6211\u4eec\u6dfb\u52a0\u4e86\u5012\u8ba1\u65f6\u548c\u6b63\u8ba1\u65f6\u529f\u80fd\u7684\u5b98\u65b9\u4ee3\u7801\u3002<\/p>\n<p>\u4f5c\u4e3a\u6211\u81ea\u5df1\u7684\u5b66\u4e60<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">useState<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8<\/ul>\n<p>\u7528&#8230;\u8fdb\u884c\u4e66\u5199\u3002<br \/>\n\u4f7f\u7528&#8230;\u65b9\u5f0f\u8fdb\u884c\u4e66\u5199\u3002<br \/>\n\u91c7\u7528&#8230;\u7684\u65b9\u5f0f\u6765\u4e66\u5199\u3002<br \/>\n\u4ee5&#8230;\u7684\u65b9\u6cd5\u6765\u5199\u4f5c\u3002<\/p>\n<p>\u4e0e\u516c\u5f0f\u4e0d\u540c\u7684\u662f\uff0c\u6211\u907f\u514d\u4e86\u5728onClick\u4e8b\u4ef6\u4e2d\u8fdb\u884c\u786c\u7f16\u7801\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">\/\/index.js<\/span>\r\n<span class=\"k\">import<\/span> <span class=\"nx\">React<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">react<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">import<\/span> <span class=\"nx\">ReactDOM<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">react-dom<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">import<\/span> <span class=\"nx\">App<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">.\/App<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"nx\">ReactDOM<\/span><span class=\"p\">.<\/span><span class=\"nx\">render<\/span><span class=\"p\">(<\/span>\r\n    <span class=\"p\">&lt;<\/span><span class=\"nc\">App<\/span> <span class=\"p\">\/&gt;,<\/span>\r\n  <span class=\"nb\">document<\/span><span class=\"p\">.<\/span><span class=\"nx\">getElementById<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">root<\/span><span class=\"dl\">'<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">);<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"c1\">\/\/App.js<\/span>\r\n<span class=\"k\">import<\/span> <span class=\"nx\">React<\/span><span class=\"p\">,{<\/span><span class=\"nx\">useState<\/span><span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">react<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"kd\">function<\/span> <span class=\"nx\">App<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"kd\">const<\/span> <span class=\"p\">[<\/span> <span class=\"nx\">count<\/span><span class=\"p\">,<\/span> <span class=\"nx\">addCount<\/span> <span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">useState<\/span><span class=\"p\">(<\/span><span class=\"mi\">0<\/span><span class=\"p\">);<\/span>\r\n  <span class=\"kd\">const<\/span> <span class=\"nx\">countUp<\/span> <span class=\"o\">=<\/span> <span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nx\">addCount<\/span><span class=\"p\">(<\/span> <span class=\"nx\">count<\/span> <span class=\"o\">+<\/span> <span class=\"mi\">1<\/span> <span class=\"p\">)<\/span>\r\n  <span class=\"p\">}<\/span>\r\n  <span class=\"kd\">const<\/span> <span class=\"nx\">countDown<\/span> <span class=\"o\">=<\/span> <span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nx\">addCount<\/span><span class=\"p\">(<\/span> <span class=\"nx\">count<\/span> <span class=\"o\">-<\/span> <span class=\"mi\">1<\/span> <span class=\"p\">)<\/span>\r\n  <span class=\"p\">}<\/span>\r\n  <span class=\"k\">return<\/span> <span class=\"p\">(<\/span>\r\n    <span class=\"p\">&lt;&gt;<\/span>\r\n      <span class=\"p\">&lt;<\/span><span class=\"nt\">p<\/span><span class=\"p\">&gt;<\/span><span class=\"si\">{<\/span><span class=\"nx\">count<\/span><span class=\"si\">}<\/span><span class=\"p\">&lt;\/<\/span><span class=\"nt\">p<\/span><span class=\"p\">&gt;<\/span>\r\n      <span class=\"p\">&lt;<\/span><span class=\"nt\">button<\/span> <span class=\"na\">onClick<\/span><span class=\"p\">=<\/span><span class=\"si\">{<\/span><span class=\"nx\">countUp<\/span><span class=\"si\">}<\/span><span class=\"p\">&gt;<\/span>\u8ffd\u52a0<span class=\"p\">&lt;\/<\/span><span class=\"nt\">button<\/span><span class=\"p\">&gt;<\/span>\r\n      <span class=\"p\">&lt;<\/span><span class=\"nt\">button<\/span> <span class=\"na\">onClick<\/span><span class=\"p\">=<\/span><span class=\"si\">{<\/span><span class=\"nx\">countDown<\/span><span class=\"si\">}<\/span><span class=\"p\">&gt;<\/span>\u524a\u9664<span class=\"p\">&lt;\/<\/span><span class=\"nt\">button<\/span><span class=\"p\">&gt;<\/span>\r\n    <span class=\"p\">&lt;\/&gt;<\/span>\r\n  <span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">export<\/span> <span class=\"k\">default<\/span> <span class=\"nx\">App<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u6211\u4eec\u6dfb\u52a0\u4e86\u5012\u8ba1\u65f6\u548c\u6b63\u8ba1\u65f6\u529f\u80fd\u7684\u5b98\u65b9\u4ee3\u7801\u3002 \u4f5c\u4e3a\u6211\u81ea\u5df1\u7684\u5b66\u4e60 useState &nbsp; \u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8 [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-38687","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u53cd\u5e94\u8ba1\u6570\u589e\u52a0 - 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\/\u53cd\u5e94\u8ba1\u6570\u589e\u52a0\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u53cd\u5e94\u8ba1\u6570\u589e\u52a0\" \/>\n<meta property=\"og:description\" content=\"\u6211\u4eec\u6dfb\u52a0\u4e86\u5012\u8ba1\u65f6\u548c\u6b63\u8ba1\u65f6\u529f\u80fd\u7684\u5b98\u65b9\u4ee3\u7801\u3002 \u4f5c\u4e3a\u6211\u81ea\u5df1\u7684\u5b66\u4e60 useState &nbsp; \u95a2\u6570\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8 [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u53cd\u5e94\u8ba1\u6570\u589e\u52a0\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2023-02-27T13:23:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-04-30T01:43:48+00:00\" \/>\n<meta name=\"author\" content=\"\u9038, \u79d1\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u9038, 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