{"id":952,"date":"2026-07-05T06:45:04","date_gmt":"2026-07-05T06:45:04","guid":{"rendered":"https:\/\/hyc.eshachem.com\/program\/?p=952"},"modified":"2026-07-05T07:03:08","modified_gmt":"2026-07-05T07:03:08","slug":"js-callback-hell","status":"publish","type":"post","link":"https:\/\/hyc.eshachem.com\/program\/js-callback-hell\/","title":{"rendered":"JS &#8211; Callback Hell"},"content":{"rendered":"\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u56de\u547c\u5730\u7344 Callback Hell\uff0c\u53c8\u7a31<strong>\u300c\u6bc0\u6ec5\u91d1\u5b57\u5854\u300d\uff08Pyramid of Doom\uff09<\/strong>\u3002<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">\u7c21\u55ae\u4f86\u8aaa\uff0c\u5b83\u662f\u6307\u7576\u4f60\u9700\u8981<strong>\u9023\u7e8c\u57f7\u884c\u591a\u500b\u975e\u540c\u6b65\u64cd\u4f5c<\/strong>\uff08\u4f8b\u5982\uff1a\u5148\u8b80\u53d6\u6a94\u6848 A\uff0c\u62ff\u5230 A \u7684\u5167\u5bb9\u5f8c\u518d\u53bb\u67e5\u8cc7\u6599\u5eab B\uff0c\u67e5\u5b8c\u8cc7\u6599\u5eab\u518d\u547c\u53eb API C\u2026\uff09\uff0c\u4e14\u6bcf\u500b\u64cd\u4f5c\u90fd\u4f9d\u8cf4\u524d\u4e00\u500b\u64cd\u4f5c\u7684\u7d50\u679c\u6642\uff0c\u4f60\u7684\u7a0b\u5f0f\u78bc\u6703\u4e0d\u65b7\u5730\u5411\u53f3\u7e2e\u9032\uff0c\u5047\u8a2d\u6211\u5011\u73fe\u5728\u8981\u8fa6\u7406\u4e00\u500b\u6703\u54e1\u8a3b\u518a\u6d41\u7a0b\uff0c\u80cc\u5f8c\u9700\u8981\u505a\u4e09\u4ef6\u4e8b\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u9a57\u8b49\u4f7f\u7528\u8005\u5bc6\u78bc<\/li>\n\n\n\n<li>\u6488\u53d6\u8a72\u4f7f\u7528\u8005\u7684\u500b\u4eba\u8cc7\u6599<\/li>\n\n\n\n<li>\u66f4\u65b0\u4ed6\u7684\u6700\u5f8c\u767b\u5165\u6642\u9593<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u7528\u50b3\u7d71\u7684 Callback \u5beb\u6cd5\uff0c\u7a0b\u5f0f\u78bc\u6703\u8b8a\u6210\u9019\u6a23\uff1a<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-1\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\"><span class=\"hljs-comment\">\/\/ \u7d93\u5178\u7684\u91d1\u5b57\u5854\u5f62\u72c0<\/span>\nverifyUser(username, password, <span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span>(<span class=\"hljs-params\">err, userInfo<\/span>) <\/span>{\n    <span class=\"hljs-keyword\">if<\/span> (err) {\n        handleError(err);\n    } <span class=\"hljs-keyword\">else<\/span> {\n        getUserProfile(userInfo.id, <span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span>(<span class=\"hljs-params\">err, profile<\/span>) <\/span>{\n            <span class=\"hljs-keyword\">if<\/span> (err) {\n                handleError(err);\n            } <span class=\"hljs-keyword\">else<\/span> {\n                updateLoginStatus(profile.id, <span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span>(<span class=\"hljs-params\">err, result<\/span>) <\/span>{\n                    <span class=\"hljs-keyword\">if<\/span> (err) {\n                        handleError(err);\n                    } <span class=\"hljs-keyword\">else<\/span> {\n                        <span class=\"hljs-built_in\">console<\/span>.log(<span class=\"hljs-string\">\"\u5168\u90e8\u6210\u529f\uff01\u65b0\u72c0\u614b\u70ba:\"<\/span>, result);\n                        <span class=\"hljs-comment\">\/\/ \u5982\u679c\u5f8c\u9762\u9084\u6709\u7b2c 4\u3001\u7b2c 5 \u500b\u6b65\u9a5f...\u7a0b\u5f0f\u78bc\u6703\u7e7c\u7e8c\u5f80\u53f3\u908a\u7121\u9650\u5ef6\u4f38<\/span>\n                    }\n                });\n            }\n        });\n    }\n});<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-1\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h2 class=\"wp-block-heading\" id=\"%e7%82%ba%e4%bb%80%e9%ba%bc-callback-hell-%e6%98%af%e5%80%8b%e5%a4%a7%e5%95%8f%e9%a1%8c%ef%bc%9f\">\u70ba\u4ec0\u9ebc Callback Hell \u662f\u500b\u5927\u554f\u984c\uff1f<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6975\u5ea6\u96e3\u4ee5\u95b1\u8b80\uff1a<\/strong> \u7a0b\u5f0f\u78bc\u4e0d\u662f\u5f80\u4e0b\u767c\u5c55\uff0c\u800c\u662f\u5f80\u53f3\u767c\u5c55\u3002\u7576\u5c64\u5c64\u5d4c\u5957\u5230 5 \u5c64\u4ee5\u4e0a\u6642\uff0c\u4f60\u5149\u662f\u627e\u54ea\u4e00\u500b\u5927\u62ec\u865f <code>{}<\/code> \u5c0d\u61c9\u54ea\u4e00\u500b\uff0c\u773c\u775b\u5c31\u6703\u778e\u6389\u3002<\/li>\n\n\n\n<li><strong>\u932f\u8aa4\u8655\u7406\uff08Error Handling\uff09\u975e\u5e38\u75db\u82e6\uff1a<\/strong> \u4f60\u5fc5\u9808\u5728\u300c\u6bcf\u4e00\u5c64\u300d\u90fd\u5beb\u4e00\u6b21 <code>if (err)<\/code>\u3002\u53ea\u8981\u6f0f\u6389\u4e00\u5c64\uff0c\u7a0b\u5f0f\u6293\u5230\u932f\u8aa4\u6642\u5c31\u6703\u76f4\u63a5\u5d29\u6f70\uff0c\u800c\u4e14\u5f88\u96e3\u8ffd\u8e64\u5230\u5e95\u662f\u54ea\u4e00\u500b\u6b65\u9a5f\u51fa\u932f\u3002<\/li>\n\n\n\n<li><strong>\u96e3\u4ee5\u7dad\u8b77\u8207\u91cd\u69cb\uff1a<\/strong> \u5982\u679c\u4eca\u5929\u60f3\u628a\u300c\u6b65\u9a5f 2\u300d\u548c\u300c\u6b65\u9a5f 3\u300d\u7684\u9806\u5e8f\u5c0d\u8abf\uff0c\u6216\u8005\u4e2d\u9593\u60f3\u5b89\u63d2\u4e00\u500b\u65b0\u6b65\u9a5f\uff0c\u4f60\u5f97\u5927\u8cbb\u5468\u7ae0\u5730\u62c6\u89e3\u3001\u79fb\u52d5\u6574\u584a\u91d1\u5b57\u5854\uff0c\u6975\u6613\u5beb\u51fa Bug\u3002<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h2 class=\"wp-block-heading\" id=\"%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%b3%95\">\u89e3\u6c7a\u65b9\u6cd5<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">JavaScript \u5f8c\u4f86\u63a8\u51fa\u4e86\u5169\u500b\u91cd\u5927\u7684\u8a9e\u6cd5\u66f4\u65b0\u4f86\u5fb9\u5e95\u89e3\u6c7a\u9019\u500b\u554f\u984c\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"%e6%96%b9%e6%a1%88-a%ef%bc%9a%e4%bd%bf%e7%94%a8-promise%ef%bc%88%e9%bb%9e%e5%b0%8d%e9%bb%9e%e4%b8%b2%e8%81%af%ef%bc%89\">\u65b9\u6848 A\uff1a\u4f7f\u7528 Promise\uff08\u9ede\u5c0d\u9ede\u4e32\u806f\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u628a\u975e\u540c\u6b65\u64cd\u4f5c\u5305\u88dd\u6210 Promise \u7269\u4ef6\uff0c\u7a0b\u5f0f\u78bc\u5c31\u53ef\u4ee5\u7528 <code>.then()<\/code>\u300c\u5f80\u4e0b\u300d\u93c8\u63a5\uff0c\u64fa\u812b\u5411\u53f3\u7e2e\u9032\u3002<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-2\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\">verifyUser(username, password)\n  .then(<span class=\"hljs-function\"><span class=\"hljs-params\">userInfo<\/span> =&gt;<\/span> getUserProfile(userInfo.id))\n  .then(<span class=\"hljs-function\"><span class=\"hljs-params\">profile<\/span> =&gt;<\/span> updateLoginStatus(profile.id))\n  .then(<span class=\"hljs-function\"><span class=\"hljs-params\">result<\/span> =&gt;<\/span> <span class=\"hljs-built_in\">console<\/span>.log(<span class=\"hljs-string\">\"\u5168\u90e8\u6210\u529f\uff01\"<\/span>, result))\n  .catch(<span class=\"hljs-function\"><span class=\"hljs-params\">err<\/span> =&gt;<\/span> handleError(err)); <span class=\"hljs-comment\">\/\/ \u6240\u6709\u7684\u932f\u8aa4\uff0c\u53ea\u8981\u5728\u6700\u5f8c\u7528\u4e00\u500b catch \u5c31\u80fd\u7d71\u4e00\u6355\u6349\uff01<\/span><\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-2\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<h3 class=\"wp-block-heading\" id=\"%e6%96%b9%e6%a1%88-b%ef%bc%9a%e4%bd%bf%e7%94%a8-async-await%ef%bc%88%e7%b5%82%e6%a5%b5%e5%84%aa%e9%9b%85%e7%89%88%ef%bc%89\">\u65b9\u6848 B\uff1a\u4f7f\u7528 Async \/ Await\uff08\u7d42\u6975\u512a\u96c5\u7248\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e5f\u662f\u76ee\u524d\u5546\u667a\u4e2d\u5fc3\u548c\u6211\u500b\u4eba\u7684\u5beb\u6cd5\uff0c\u5b83\u8b93\u975e\u540c\u6b65\u7a0b\u5f0f\u78bc<strong>\u770b\u8d77\u4f86\u5c31\u50cf\u540c\u6b65\u7a0b\u5f0f\u78bc\u4e00\u6a23\u4e7e\u6de8<\/strong>\uff1a<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-3\" data-shcb-language-name=\"JavaScript\" data-shcb-language-slug=\"javascript\"><span><code class=\"hljs language-javascript\"><span class=\"hljs-keyword\">async<\/span> <span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> <span class=\"hljs-title\">handleUserLogin<\/span>(<span class=\"hljs-params\"><\/span>) <\/span>{\n  <span class=\"hljs-keyword\">try<\/span> {\n    <span class=\"hljs-keyword\">const<\/span> userInfo = <span class=\"hljs-keyword\">await<\/span> verifyUser(username, password);\n    <span class=\"hljs-keyword\">const<\/span> profile = <span class=\"hljs-keyword\">await<\/span> getUserProfile(userInfo.id);\n    <span class=\"hljs-keyword\">const<\/span> result = <span class=\"hljs-keyword\">await<\/span> updateLoginStatus(profile.id);\n    <span class=\"hljs-built_in\">console<\/span>.log(<span class=\"hljs-string\">\"\u5168\u90e8\u6210\u529f\uff01\"<\/span>, result);\n  } <span class=\"hljs-keyword\">catch<\/span> (err) {\n    handleError(err); <span class=\"hljs-comment\">\/\/ \u4e00\u500b try...catch \u641e\u5b9a\u6240\u6709\u6b65\u9a5f\u7684\u932f\u8aa4<\/span>\n  }\n}<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-3\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">JavaScript<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">javascript<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>","protected":false},"excerpt":{"rendered":"<p>\u56de\u547c\u5730\u7344 Callback Hell\uff0c\u53c8\u7a31\u300c\u6bc0\u6ec5\u91d1\u5b57\u5854\u300d\uff08Pyramid of Doom\uff09\u3002 \u7c21\u55ae\u4f86\u8aaa\uff0c\u5b83\u662f\u6307\u7576\u4f60\u9700\u8981\u9023\u7e8c\u57f7\u884c\u591a\u500b\u975e\u540c\u6b65\u64cd\u4f5c\uff08\u4f8b\u5982\uff1a\u5148\u8b80\u53d6\u6a94\u6848 A\uff0c\u62ff\u5230 A \u7684\u5167\u5bb9\u5f8c\u518d\u53bb\u67e5\u8cc7\u6599\u5eab B\uff0c\u67e5\u5b8c\u8cc7\u6599\u5eab\u518d\u547c\u53eb API C\u2026\uff09\uff0c\u4e14\u6bcf\u500b\u64cd\u4f5c\u90fd\u4f9d\u8cf4\u524d\u4e00\u500b\u64cd\u4f5c\u7684\u7d50\u679c\u6642\uff0c\u4f60\u7684\u7a0b\u5f0f\u78bc\u6703\u4e0d\u65b7\u5730\u5411\u53f3\u7e2e\u9032\uff0c\u5047\u8a2d\u6211\u5011\u73fe\u5728\u8981\u8fa6\u7406\u4e00\u500b\u6703\u54e1\u8a3b\u518a\u6d41\u7a0b\uff0c\u80cc\u5f8c\u9700\u8981\u505a\u4e09\u4ef6\u4e8b\uff1a \u7528\u50b3\u7d71\u7684 Callback \u5beb\u6cd5\uff0c\u7a0b\u5f0f\u78bc\u6703\u8b8a\u6210\u9019\u6a23\uff1a \u70ba\u4ec0\u9ebc Callback Hell \u662f\u500b\u5927\u554f\u984c\uff1f \u89e3\u6c7a\u65b9\u6cd5 JavaScript \u5f8c\u4f86\u63a8\u51fa\u4e86\u5169\u500b\u91cd\u5927\u7684\u8a9e\u6cd5\u66f4\u65b0\u4f86\u5fb9\u5e95\u89e3\u6c7a\u9019\u500b\u554f\u984c\uff1a \u65b9\u6848 A\uff1a\u4f7f\u7528 Promise\uff08\u9ede\u5c0d\u9ede\u4e32\u806f\uff09 \u628a\u975e\u540c\u6b65\u64cd\u4f5c\u5305\u88dd\u6210 Promise \u7269\u4ef6\uff0c\u7a0b\u5f0f\u78bc\u5c31\u53ef\u4ee5\u7528 .then()\u300c\u5f80\u4e0b\u300d\u93c8\u63a5\uff0c\u64fa\u812b\u5411\u53f3\u7e2e\u9032\u3002 \u65b9\u6848 B\uff1a\u4f7f\u7528 Async \/ Await\uff08\u7d42\u6975\u512a\u96c5\u7248\uff09 \u4e5f\u662f\u76ee\u524d\u5546\u667a\u4e2d\u5fc3\u548c\u6211\u500b\u4eba\u7684\u5beb\u6cd5\uff0c\u5b83\u8b93\u975e\u540c\u6b65\u7a0b\u5f0f\u78bc\u770b\u8d77\u4f86\u5c31\u50cf\u540c\u6b65\u7a0b\u5f0f\u78bc\u4e00\u6a23\u4e7e\u6de8\uff1a<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[15],"tags":[],"class_list":["post-952","post","type-post","status-publish","format-standard","hentry","category-front-end"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u56de\u547c\u5730\u7344 Callback Hell\uff0c\u53c8\u7a31\u300c\u6bc0\u6ec5\u91d1\u5b57\u5854\u300d\uff08Pyramid of Doom\uff09\u3002 \u7c21\u55ae\u4f86\u8aaa\uff0c\u5b83\u662f\u6307\u7576\u4f60\u9700\u8981\u9023\u7e8c\u57f7\u884c\u591a\u500b\u975e\u540c\u6b65\u64cd\u4f5c\uff08\u4f8b\u5982\uff1a\u5148\u8b80\u53d6\u6a94\u6848 A\uff0c\u62ff\u5230 A \u7684\u5167\u5bb9\u5f8c\u518d\u53bb\u67e5\u8cc7\u6599\u5eab B\uff0c\u67e5\u5b8c\u8cc7\u6599\u5eab\u518d\u547c\u53eb API C\u2026\uff09\uff0c\u4e14\u6bcf\u500b\u64cd\u4f5c\u90fd\u4f9d\u8cf4\u524d\u4e00\u500b\u64cd\u4f5c\u7684\u7d50\u679c\u6642\uff0c\u4f60\u7684\u7a0b\u5f0f\u78bc\u6703\u4e0d\u65b7\u5730\u5411\u53f3\u7e2e\u9032\uff0c\u5047\u8a2d\u6211\u5011\u73fe\u5728\u8981\u8fa6\u7406\u4e00\u500b\u6703\u54e1\u8a3b\u518a\u6d41\u7a0b\uff0c\u80cc\u5f8c\u9700\u8981\u505a\u4e09\u4ef6\u4e8b\uff1a \u9a57\u8b49\u4f7f\u7528\u8005\u5bc6\u78bc \u6488\u53d6\u8a72\u4f7f\u7528\u8005\u7684\u500b\u4eba\u8cc7\u6599 \u66f4\u65b0\u4ed6\u7684\u6700\u5f8c\u767b\u5165\u6642\u9593 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