From abd90f9abb4db2d1caa8f23c2bb7f1fb1b728a05 Mon Sep 17 00:00:00 2001 From: akiq2016 Date: Thu, 14 Oct 2021 23:08:15 +0800 Subject: [PATCH] Deploy website - based on 4078649f75a4d60851ddff34aa00f7cddc3e23ea --- 404.html | 10 +++++----- about/index.html => about.html | 10 +++++----- .../{d4358da1.d434a604.js => d4358da1.ba5b02b5.js} | 2 +- assets/js/main.52f9823f.js | 2 ++ ...7.js.LICENSE.txt => main.52f9823f.js.LICENSE.txt} | 0 assets/js/main.5a9fbc37.js | 2 -- ...ime~main.ab45fc51.js => runtime~main.e4536af0.js} | 2 +- ...dex.html => algorithm-balanced-binary-trees.html} | 10 +++++----- .../index.html => browser-cross-origin.html} | 10 +++++----- .../index.html => browser-repain-reflow.html} | 10 +++++----- .../index.html => coding-promise.html} | 10 +++++----- book1/{css-bfc/index.html => css-bfc.html} | 10 +++++----- .../index.html => engineer-webpack-workflow.html} | 10 +++++----- .../index.html => frame-vue-computed-watch.html} | 10 +++++----- .../index.html => frame-vue-data-binding.html} | 10 +++++----- book1/{js-closures/index.html => js-closures.html} | 10 +++++----- .../index.html => js-module-specs.html} | 10 +++++----- .../index.html => network-security.html} | 10 +++++----- .../index.html => topic-enter-url-display-xx.html} | 10 +++++----- ...index.html => algorithm-reverse-linked-list.html} | 10 +++++----- .../index.html => browser-garbage.html} | 10 +++++----- .../index.html => browser-render-mechanism.html} | 10 +++++----- .../index.html => coding-throttle-debounce.html} | 10 +++++----- .../index.html => css-preprocessor.html} | 10 +++++----- .../index.html => engineer-babel.html} | 10 +++++----- .../index.html => frame-react-fiber.html} | 10 +++++----- .../index.html => frame-react-hoc-hooks.html} | 10 +++++----- book2/{js-inherite/index.html => js-inherite.html} | 10 +++++----- book2/{js-new/index.html => js-new.html} | 10 +++++----- .../index.html => network-http-cache.html} | 10 +++++----- ...ndex.html => topic-multi-pics-site-optimize.html} | 10 +++++----- .../index.html => algorithm-binary-tree-k.html} | 10 +++++----- .../index.html => browser-event-loop.html} | 10 +++++----- .../index.html => browser-memory-leaks.html} | 10 +++++----- .../index.html => coding-arr-to-tree.html} | 10 +++++----- .../index.html => css-mobile-adaptive.html} | 10 +++++----- .../index.html => engineer-webpack-loader.html} | 10 +++++----- book3/{frame-diff/index.html => frame-diff.html} | 10 +++++----- .../index.html => frame-react-hooks.html} | 10 +++++----- book3/{js-async/index.html => js-async.html} | 12 ++++++------ .../index.html => js-ts-interface-type.html} | 10 +++++----- .../index.html => network-http-1-2.html} | 10 +++++----- ...dex.html => topic-white-screen-optimization.html} | 10 +++++----- guide/index.html => guide.html | 10 +++++----- index.html | 10 +++++----- opensearch.xml | 8 ++++---- readme.md | 5 +++++ search/index.html => search.html | 10 +++++----- sitemap.xml | 2 +- tags/index.html => tags.html | 10 +++++----- 50 files changed, 225 insertions(+), 220 deletions(-) rename about/index.html => about.html (86%) rename assets/js/{d4358da1.d434a604.js => d4358da1.ba5b02b5.js} (98%) create mode 100644 assets/js/main.52f9823f.js rename assets/js/{main.5a9fbc37.js.LICENSE.txt => main.52f9823f.js.LICENSE.txt} (100%) delete mode 100644 assets/js/main.5a9fbc37.js rename assets/js/{runtime~main.ab45fc51.js => runtime~main.e4536af0.js} (98%) rename book1/{algorithm-balanced-binary-trees/index.html => algorithm-balanced-binary-trees.html} (96%) rename book1/{browser-cross-origin/index.html => browser-cross-origin.html} (93%) rename book1/{browser-repain-reflow/index.html => browser-repain-reflow.html} (91%) rename book1/{coding-promise/index.html => coding-promise.html} (99%) rename book1/{css-bfc/index.html => css-bfc.html} (93%) rename book1/{engineer-webpack-workflow/index.html => engineer-webpack-workflow.html} (85%) rename book1/{frame-vue-computed-watch/index.html => frame-vue-computed-watch.html} (91%) rename book1/{frame-vue-data-binding/index.html => frame-vue-data-binding.html} (97%) rename book1/{js-closures/index.html => js-closures.html} (93%) rename book1/{js-module-specs/index.html => js-module-specs.html} (98%) rename book1/{network-security/index.html => network-security.html} (93%) rename book1/{topic-enter-url-display-xx/index.html => topic-enter-url-display-xx.html} (95%) rename book2/{algorithm-reverse-linked-list/index.html => algorithm-reverse-linked-list.html} (94%) rename book2/{browser-garbage/index.html => browser-garbage.html} (91%) rename book2/{browser-render-mechanism/index.html => browser-render-mechanism.html} (95%) rename book2/{coding-throttle-debounce/index.html => coding-throttle-debounce.html} (95%) rename book2/{css-preprocessor/index.html => css-preprocessor.html} (95%) rename book2/{engineer-babel/index.html => engineer-babel.html} (96%) rename book2/{frame-react-fiber/index.html => frame-react-fiber.html} (94%) rename book2/{frame-react-hoc-hooks/index.html => frame-react-hoc-hooks.html} (95%) rename book2/{js-inherite/index.html => js-inherite.html} (97%) rename book2/{js-new/index.html => js-new.html} (93%) rename book2/{network-http-cache/index.html => network-http-cache.html} (92%) rename book2/{topic-multi-pics-site-optimize/index.html => topic-multi-pics-site-optimize.html} (97%) rename book3/{algorithm-binary-tree-k/index.html => algorithm-binary-tree-k.html} (94%) rename book3/{browser-event-loop/index.html => browser-event-loop.html} (94%) rename book3/{browser-memory-leaks/index.html => browser-memory-leaks.html} (93%) rename book3/{coding-arr-to-tree/index.html => coding-arr-to-tree.html} (97%) rename book3/{css-mobile-adaptive/index.html => css-mobile-adaptive.html} (96%) rename book3/{engineer-webpack-loader/index.html => engineer-webpack-loader.html} (98%) rename book3/{frame-diff/index.html => frame-diff.html} (95%) rename book3/{frame-react-hooks/index.html => frame-react-hooks.html} (97%) rename book3/{js-async/index.html => js-async.html} (96%) rename book3/{js-ts-interface-type/index.html => js-ts-interface-type.html} (96%) rename book3/{network-http-1-2/index.html => network-http-1-2.html} (91%) rename book3/{topic-white-screen-optimization/index.html => topic-white-screen-optimization.html} (94%) rename guide/index.html => guide.html (76%) rename search/index.html => search.html (90%) rename tags/index.html => tags.html (76%) diff --git a/404.html b/404.html index a3e3f91..f6e2fa9 100644 --- a/404.html +++ b/404.html @@ -6,14 +6,14 @@ -Page Not Found | HZFE - 剑指前端 Offer - - +Page Not Found | HZFE - 剑指前端 Offer + +
Skip to main content

Page Not Found

We could not find what you were looking for.

Please contact the owner of the site that linked you to the original URL and let them know their link is broken.

- - + + \ No newline at end of file diff --git a/about/index.html b/about.html similarity index 86% rename from about/index.html rename to about.html index 0fb09b3..4d715a6 100644 --- a/about/index.html +++ b/about.html @@ -6,14 +6,14 @@ -关于我们 | HZFE - 剑指前端 Offer - - +关于我们 | HZFE - 剑指前端 Offer + +
Skip to main content

关于我们

Hi，我们是 HZFE，一群来自于五湖四海的 90 后技术人。

一些缘分 :D#

一群固定的人总聚在一起，不知不觉就会成为一个所谓的团队。而我们的团队代号“HZFE”，总让不明其意的人拼错或不知如何发音。曾经在我们三周年活动蛋糕上，店家就用心写下了“H2FF 三周年快乐”的祝福。但是问题不大，只要我们不说，没有人会知道。

我们最初相识于拥有 17 位成员的群聊，群聊名称正是 HZFE。其本意是杭州前端（Hangzhou Front-End），所以也读作“杭州 FE”。尽管我们大多不在杭州，也不全是前端。所以姑且当这是个没道理的代号吧，而我们的相聚则是一场有趣的缘分。

可爱的人 0:)#

和每个普通人一样，我们大多过着三点一线的生活。喜欢旅游也爱摄影，也像千千万个理财小白一般，在正向或是反向理财中来回波动。每天都在产出新的想法，一起头脑风暴，结局总是以没有设计师为借口不了了之，三分钟热度成了我们心照不宣的默契。每天都在做梦，讲些不切实际的幻想，平凡且平庸。

如果说，唯一值得小小炫耀一番的，便是我们这群人对于热爱开发这件事达成了共识。不论是做开源、做自己的产品亦或各自在工作岗位上，都有所收获和成绩。目前团队开源的技术项目累计 6k star 以上，成员主要任职于腾讯、阿里巴巴、字节跳动、百度等一二线互联网公司，同时也不乏优秀的个人开发者。或许我们也是幸运的，在刚踏入社会时相遇相知相爱，彼此影响，一同成长为此刻至少技术还不赖的人。

做些东西 ;‑)#

因缘巧合下，在某天如同往日的头脑风暴中，我们一拍脑袋，说要一起写本书，将五年来对于行业面试规则和趋势的了解整理成册。就此，开启了这场坎坷的写作之旅。

正如其名：剑指前端 Offer，希望在这本书的帮助下，我们和读者都能有所成长。

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btn \u7684 click \u4e8b\u4ef6\uff0c\u5f53 btn \u88ab\u70b9\u51fb\u65f6\u5411\u8ba2\u9605\u8005\u53d1\u9001\u8fd9\u4e2a\u6d88\u606f\uff0c\u6267\u884c\u5bf9\u5e94\u7684\u64cd\u4f5c\u3002"),(0,l.kt)("pre",null,(0,l.kt)("code",{parentName:"pre",className:"language-js"},'class PubSub {\n constructor() {\n // \u5b58\u50a8\u6240\u6709\u8ba2\u9605\u7684\u4e8b\u4ef6\u7c7b\u578b\u53ca\u5bf9\u5e94\u7684\u8ba2\u9605\u51fd\u6570\u6570\u7ec4\n // key : value []\n this.handlers = {};\n }\n // \u8ba2\u9605\u4e8b\u4ef6\u65b9\u6cd5\n on(eventType, handler) {\n if (!(eventType in this.handlers)) this.handlers[eventType] = [];\n this.handlers[eventType].push(handler);\n }\n // \u6d88\u606f\u53d1\u5e03\u65b9\u6cd5\n emit(eventType, ...handlerArgs) {\n this.handlers[eventType].forEach((v) => {\n v(...handlerArgs);\n });\n }\n // \u53d6\u6d88\u8ba2\u9605\n remove(eventType, handler) {\n // \u6ca1\u6709\u4f20\u5165\u5177\u4f53\u7684\u4e8b\u4ef6\u5904\u7406\u51fd\u6570\uff0c\u5219\u79fb\u9664\u8be5\u4e8b\u4ef6\u7c7b\u578b\u7684\u6240\u6709\u8ba2\u9605\u51fd\u6570\n // \u6709\u5219\u5728\u8ba2\u9605\u6570\u7ec4\u4e2d\u79fb\u9664\u5bf9\u5e94\u7684\u51fd\u6570\n if (!handler) {\n this.handlers[eventType].length = 0;\n } else {\n const key = this.handlers[eventType].findIndex((v) => v === handler);\n if (key !== -1) this.handlers[eventType].splice(key, 1);\n }\n }\n}\n\nconst test1 = new PubSub();\nconst fn1 = (...data) => console.log(data);\ntest1.on("event1", fn1);\ntest1.on("event1", (...data) => console.log(`fn2: ${data}`));\ntest1.emit("event1", "hzfe1", "hzfe2", "hzfe3");\ntest1.remove("event1", fn1);\n// ["hzfe1", "hzfe2", "hzfe3"] fn1\u6253\u5370\n// fn2: hzfe1,hzfe2,hzfe3\n')),(0,l.kt)("p",null,"\u53d1\u5e03/\u8ba2\u9605\u6a21\u5f0f\u53ef\u4ee5\u66f4\u7ec6\u81f4\u5730\u4e86\u89e3\u5230\u6709\u591a\u5c11\u79cd\u4e8b\u4ef6\u7c7b\u578b\u4ee5\u53ca\u6bcf\u79cd\u7c7b\u578b\u5bf9\u5e94\u7684\u8ba2\u9605\u4e8b\u4ef6\uff0c\u65b9\u4fbf\u8fdb\u4e00\u6b65\u7684\u76d1\u542c\u4e0e\u63a7\u5236\u3002"),(0,l.kt)("h3",{id:"4-promise"},"4. Promise"),(0,l.kt)("p",null,"Promise \u63d0\u4f9b\u4e86\u5b8c\u6210\u548c\u62d2\u7edd\u4e24\u4e2a\u72b6\u6001\u6765\u6807\u8bc6\u5f02\u6b65\u64cd\u4f5c\u7ed3\u679c\uff0c\u901a\u8fc7 then \u548c catch \u53ef\u4ee5\u5206\u522b\u5bf9\u7740\u4e24\u4e2a\u72b6\u6001\u8fdb\u884c\u8ddf\u8e2a\u5904\u7406\u3002\u548c\u4e8b\u4ef6\u76d1\u542c\u7684\u4e3b\u8981\u5dee\u522b\u5728\u4e8e\uff1a"),(0,l.kt)("ol",null,(0,l.kt)("li",{parentName:"ol"},"\u4e00\u4e2a Promise \u53ea\u80fd\u6210\u529f\u6216\u5931\u8d25\u4e00\u6b21\uff0c\u4e00\u65e6\u72b6\u6001\u6539\u53d8\uff0c\u5c31\u65e0\u6cd5\u4ece\u6210\u529f\u5207\u6362\u5230\u5931\u8d25\uff0c\u53cd\u4e4b\u4ea6\u7136\u3002"),(0,l.kt)("li",{parentName:"ol"},"\u5982\u679c Promise \u6210\u529f\u6216\u5931\u8d25\uff0c\u90a3\u4e48\u5373\u4f7f\u5728\u4e8b\u4ef6\u53d1\u751f\u4e4b\u540e\u6dfb\u52a0\u6210\u529f/\u5931\u8d25\u56de\u8c03\uff0c\u4e5f\u5c06\u8c03\u7528\u6b63\u786e\u7684\u56de\u8c03\u3002")),(0,l.kt)("p",null,"Promise \u4f7f\u7528\u987a\u5e8f\u7684\u65b9\u5f0f\u6765\u8868\u8fbe\u5f02\u6b65\uff0c\u5c06\u56de\u8c03\u7684\u63a7\u5236\u6743\u8f6c\u4ea4\u7ed9\u4e86\u53ef\u4ee5\u4fe1\u4efb\u7684 Promise.resolve()\uff0c\u540c\u65f6\u4e5f\u80fd\u591f\u4f7f\u7528\u94fe\u5f0f\u6d41\u7684\u65b9\u5f0f\u907f\u514d\u56de\u8c03\u5730\u72f1\u7684\u4ea7\u751f\uff0c\u89e3\u51b3\u4e86\u5f02\u6b65\u56de\u8c03\u7684\u95ee\u9898\u3002\u4f46 Promise \u4e5f\u6709\u7f3a\u9677\uff1a"),(0,l.kt)("ol",null,(0,l.kt)("li",{parentName:"ol"},"\u987a\u5e8f\u9519\u8bef\u5904\u7406\uff1a\u5982\u679c\u4e0d\u8bbe\u7f6e\u56de\u8c03\u51fd\u6570\uff0cPromise \u94fe\u4e2d\u7684\u9519\u8bef\u5f88\u5bb9\u6613\u88ab\u5ffd\u7565\u3002"),(0,l.kt)("li",{parentName:"ol"},"\u5355\u51b3\u8bae\uff1aPromise \u53ea\u80fd\u88ab\u51b3\u8bae\u4e00\u6b21\uff08\u5b8c\u6210\u6216\u62d2\u7edd\uff09\uff0c\u4e0d\u80fd\u5f88\u597d\u5730\u652f\u6301\u591a\u6b21\u89e6\u53d1\u7684\u4e8b\u4ef6\u53ca\u6570\u636e\u6d41\uff08\u652f\u6301\u7684",(0,l.kt)("a",{parentName:"li",href:"https://streams.spec.whatwg.org/"},"\u6807\u51c6"),"\u6b63\u5728\u5236\u5b9a\u4e2d\uff09\u3002"),(0,l.kt)("li",{parentName:"ol"},"\u65e0\u6cd5\u83b7\u53d6\u72b6\u6001\uff1a\u5904\u4e8e Pending \u72b6\u6001\u65f6\uff0c\u65e0\u6cd5\u5f97\u77e5\u76ee\u524d\u8fdb\u5c55\u5230\u54ea\u4e00\u4e2a\u9636\u6bb5\uff08\u521a\u521a\u5f00\u59cb\u8fd8\u662f\u5373\u5c06\u5b8c\u6210\uff09\u3002"),(0,l.kt)("li",{parentName:"ol"},"\u65e0\u6cd5\u53d6\u6d88\uff1a\u4e00\u65e6\u521b\u5efa\u4e86 Promise \u5e76\u6ce8\u518c\u4e86\u5b8c\u6210/\u62d2\u7edd\u51fd\u6570\uff0c\u4e0d\u80fd\u53d6\u6d88\u6267\u884c\u3002")),(0,l.kt)("h3",{id:"5-\u751f\u6210\u5668-generator"},"5. \u751f\u6210\u5668 Generator"),(0,l.kt)("p",null,"Generator \u51fd\u6570\u662f ES6 \u63d0\u4f9b\u7684\u4e00\u79cd\u5f02\u6b65\u7f16\u7a0b\u89e3\u51b3\u65b9\u6848\uff0c\u8bed\u6cd5\u4e0e\u4f20\u7edf\u51fd\u6570\u5b8c\u5168\u4e0d\u540c\uff0c\u6700\u5927\u7684\u7279\u70b9\u5c31\u662f\u53ef\u4ee5\u63a7\u5236\u51fd\u6570\u7684\u6267\u884c\u3002\u7b80\u5355\u793a\u4f8b\u5982\u4e0b\uff1a"),(0,l.kt)("pre",null,(0,l.kt)("code",{parentName:"pre",className:"language-js"},"function* helloHzfeGenerator() {\n yield \"hello\";\n yield \"hzfe\";\n return \"ending\";\n}\n\nvar hello = helloHzfeGenerator();\n\nhello.next();\n// { value: 'hello', done: false }\n\nhello.next();\n// { value: 'hzfe', done: false }\n\nhello.next();\n// { value: 'ending', done: true }\n\nhello.next();\n// { value: undefined, done: true }\n")),(0,l.kt)("p",null,"\u751f\u6210\u5668 Generator \u5e76\u4e0d\u50cf\u666e\u901a\u51fd\u6570\u90a3\u6837\u603b\u662f\u8fd0\u884c\u5230\u7ed3\u675f\uff0c\u53ef\u4ee5\u5728\u8fd0\u884c\u5f53\u4e2d\u901a\u8fc7 yield \u6765\u6682\u505c\u5e76\u5b8c\u5168\u4fdd\u6301\u5176\u72b6\u6001\uff0c\u518d\u901a\u8fc7 next \u6062\u590d\u8fd0\u884c\u3002yield/next \u4e0d\u53ea\u662f\u63a7\u5236\u673a\u5236\uff0c\u4e5f\u662f\u4e00\u79cd\u53cc\u5411\u6d88\u606f\u4f20\u9012\u673a\u5236\u3002yield \u8868\u8fbe\u5f0f\u672c\u8d28\u4e0a\u662f\u6682\u505c\u4e0b\u6765\u7b49\u5f85\u67d0\u4e2a\u503c\uff0cnext \u8c03\u7528\u4f1a\u5411\u88ab\u6682\u505c\u7684 yield \u8868\u8fbe\u5f0f\u4f20\u56de\u4e00\u4e2a\u503c\uff08\u6216\u8005\u662f\u9690\u5f0f\u7684 undefined\uff09\u3002"),(0,l.kt)("p",null,"\u751f\u6210\u5668 Generator \u4fdd\u6301\u4e86\u987a\u5e8f\u3001\u540c\u6b65\u3001\u963b\u585e\u7684\u4ee3\u7801\u6a21\u5f0f\uff0c\u540c\u6837\u89e3\u51b3\u4e86\u5f02\u6b65\u56de\u8c03\u7684\u95ee\u9898\u3002"),(0,l.kt)("h3",{id:"6-aysncawait"},"6. aysnc/await"),(0,l.kt)("p",null,"aysnc/await \u5c5e\u4e8e ",(0,l.kt)("a",{parentName:"p",href:"https://262.ecma-international.org/8.0/"},"ECMAScript 2017 JavaScript \u7248"),"\u7684\u4e00\u90e8\u5206\uff0c\u4f7f\u5f02\u6b65\u4ee3\u7801\u66f4\u6613\u4e8e\u7f16\u5199\u548c\u9605\u8bfb\u3002\u901a\u8fc7\u4f7f\u7528\u5b83\u4eec\uff0c\u5f02\u6b65\u4ee3\u7801\u770b\u8d77\u6765\u66f4\u50cf\u662f\u540c\u6b65\u4ee3\u7801\u3002\u5177\u6709\u5982\u4e0b\u7279\u70b9\uff1a"),(0,l.kt)("ol",null,(0,l.kt)("li",{parentName:"ol"},"async/await \u4e0d\u80fd\u7528\u4e8e\u666e\u901a\u7684\u56de\u8c03\u51fd\u6570\u3002"),(0,l.kt)("li",{parentName:"ol"},"async/await \u4e0e Promise \u4e00\u6837\uff0c\u662f\u975e\u963b\u585e\u7684\u3002"),(0,l.kt)("li",{parentName:"ol"},"async/await \u4f7f\u5f97\u5f02\u6b65\u4ee3\u7801\u770b\u8d77\u6765\u50cf\u540c\u6b65\u4ee3\u7801\u3002")),(0,l.kt)("p",null,"async/await \u4e5f\u5b58\u5728\u95ee\u9898\uff1aawait \u5173\u952e\u5b57\u4f1a\u963b\u585e\u5176\u540e\u7684\u4ee3\u7801\uff0c\u76f4\u5230 Promise \u5b8c\u6210\uff0c\u5c31\u50cf\u6267\u884c\u540c\u6b65\u64cd\u4f5c\u4e00\u6837\u3002\u5b83\u53ef\u4ee5\u5141\u8bb8\u5176\u4ed6\u4efb\u52a1\u5728\u6b64\u671f\u95f4\u7ee7\u7eed\u8fd0\u884c\uff0c\u4f46\u81ea\u5df1\u7684\u4ee3\u7801\u4f1a\u88ab\u963b\u585e\u3002\u89e3\u51b3\u65b9\u6848\u662f\u5c06 Promise \u5bf9\u8c61\u5b58\u50a8\u5728\u53d8\u91cf\u4e2d\u6765\u540c\u65f6\u5f00\u59cb\uff0c\u7136\u540e\u7b49\u5f85\u5b83\u4eec\u5168\u90e8\u6267\u884c\u5b8c\u6bd5\u3002\u5177\u4f53\u53c2\u7167 ",(0,l.kt)("a",{parentName:"p",href:"https://mdn.github.io/learning-area/javascript/asynchronous/async-await/fast-async-await.html"},"fast asnyc await"),"\u3002\u5982\u679c\u5185\u90e8\u7684 await \u7b49\u5f85\u7684\u5f02\u6b65\u4efb\u52a1\u4e4b\u95f4\u6ca1\u6709\u4f9d\u8d56\u5173\u7cfb\uff0c\u4e14\u9700\u8981\u83b7\u53d6\u8fd9\u4e9b\u5f02\u6b65\u64cd\u4f5c\u7684\u7ed3\u679c\uff0c\u53ef\u4ee5\u4f7f\u7528 Promise.allSettled() \u540c\u65f6\u6267\u884c\u8fd9\u4e9b\u4efb\u52a1\u5e76\u83b7\u5f97\u7ed3\u679c\u3002"),(0,l.kt)("h3",{id:"7-web-worker"},"7. Web Worker"),(0,l.kt)("p",null,(0,l.kt)("strong",{parentName:"p"},"Web Worker \u4e3a JavaScript \u521b\u9020\u4e86\u591a\u7ebf\u7a0b\u73af\u5883"),"\uff0c\u5141\u8bb8\u4e3b\u7ebf\u7a0b\u521b\u5efa Worker \u7ebf\u7a0b\uff0c\u5c06\u4e00\u4e9b\u4efb\u52a1\u5206\u914d\u7ed9 Worker \u7ebf\u7a0b\u8fd0\u884c\uff0c\u5904\u7406\u5b8c\u540e\u53ef\u4ee5\u901a\u8fc7 postMessage \u5c06\u7ed3\u679c\u4f20\u9012\u7ed9\u4e3b\u7ebf\u7a0b\u3002\u4f18\u70b9\u5728\u4e8e\u53ef\u4ee5\u5728\u4e00\u4e2a\u5355\u72ec\u7684\u7ebf\u7a0b\u4e2d\u6267\u884c\u8d39\u65f6\u7684\u5904\u7406\u4efb\u52a1\uff0c\u4ece\u800c\u5141\u8bb8\u4e3b\u7ebf\u7a0b\u4e2d\u7684\u4efb\u52a1\uff08\u901a\u5e38\u662f UI\uff09\u8fd0\u884c\u4e0d\u88ab\u963b\u585e/\u653e\u6162\u3002"),(0,l.kt)("p",null,"\u4f7f\u7528 Web Worker \u65f6\u6709\u4ee5\u4e0b\u4e09\u70b9\u9700\u8981\u6ce8\u610f\u7684\u5730\u65b9\uff1a"),(0,l.kt)("ol",null,(0,l.kt)("li",{parentName:"ol"},(0,l.kt)("strong",{parentName:"li"},"\u5728 Worker \u5185\u90e8\u65e0\u6cd5\u8bbf\u95ee\u4e3b\u7ebf\u7a0b\u7684\u4efb\u4f55\u8d44\u6e90"),"\uff0c\u5305\u62ec\u5168\u5c40\u53d8\u91cf\uff0c\u9875\u9762\u7684 DOM \u6216\u8005\u5176\u4ed6\u8d44\u6e90\uff0c\u56e0\u4e3a\u8fd9\u662f\u4e00\u4e2a\u5b8c\u5168\u72ec\u7acb\u7684\u7ebf\u7a0b\u3002"),(0,l.kt)("li",{parentName:"ol"},(0,l.kt)("strong",{parentName:"li"},"Worker \u548c\u4e3b\u7ebf\u7a0b\u95f4\u7684\u6570\u636e\u4f20\u9012\u901a\u8fc7\u6d88\u606f\u673a\u5236\u8fdb\u884c"),"\u3002\u4f7f\u7528 postMessage \u65b9\u6cd5\u53d1\u9001\u6d88\u606f\uff1b\u4f7f\u7528 onmessage \u4e8b\u4ef6\u5904\u7406\u51fd\u6570\u6765\u54cd\u5e94\u6d88\u606f\u3002"),(0,l.kt)("li",{parentName:"ol"},(0,l.kt)("strong",{parentName:"li"},"Worker \u53ef\u4ee5\u521b\u5efa\u65b0\u7684 Worker\uff0c\u65b0\u7684 Worker \u548c\u7236\u9875\u9762\u540c\u6e90"),"\u3002Worker \u5728\u4f7f\u7528 XMLHttpRequest \u8fdb\u884c\u7f51\u7edc I/O \u65f6\uff0cXMLHttpRequest \u7684 responseXML \u548c channel \u5c5e\u6027\u4f1a\u8fd4\u56de null\u3002")),(0,l.kt)("p",null,"Web Worker \u4e3b\u8981\u5e94\u7528\u573a\u666f\uff1a"),(0,l.kt)("ol",null,(0,l.kt)("li",{parentName:"ol"},"\u5904\u7406\u5bc6\u96c6\u578b\u6570\u5b66\u8ba1\u7b97"),(0,l.kt)("li",{parentName:"ol"},"\u5927\u6570\u636e\u96c6\u6392\u5e8f"),(0,l.kt)("li",{parentName:"ol"},"\u6570\u636e\u5904\u7406\uff08\u538b\u7f29\uff0c\u97f3\u9891\u5206\u6790\uff0c\u56fe\u50cf\u5904\u7406\u7b49\uff09"),(0,l.kt)("li",{parentName:"ol"},"\u9ad8\u6d41\u91cf\u7f51\u7edc\u901a\u4fe1")),(0,l.kt)("h2",{id:"\u53c2\u8003\u8d44\u6599"},"\u53c2\u8003\u8d44\u6599"),(0,l.kt)("ol",null,(0,l.kt)("li",{parentName:"ol"},(0,l.kt)("a",{parentName:"li",href:"https://developer.mozilla.org/zh-CN/docs/Learn/JavaScript/Asynchronous"},"\u5f02\u6b65 JavaScript")),(0,l.kt)("li",{parentName:"ol"},(0,l.kt)("a",{parentName:"li",href:"https://developer.mozilla.org/zh-CN/docs/Web/API/Web_Workers_API/Using_web_workers"},"\u4f7f\u7528 Web Worker"))))}m.isMDXComponent=!0}}]); \ No newline at end of file +"use strict";(self.webpackChunkjjbook=self.webpackChunkjjbook||[]).push([[9591],{3905:function(e,t,n){n.d(t,{Zo:function(){return c},kt:function(){return k}});var r=n(7294);function a(e,t,n){return t in e?Object.defineProperty(e,t,{value:n,enumerable:!0,configurable:!0,writable:!0}):e[t]=n,e}function l(e,t){var n=Object.keys(e);if(Object.getOwnPropertySymbols){var r=Object.getOwnPropertySymbols(e);t&&(r=r.filter((function(t){return Object.getOwnPropertyDescriptor(e,t).enumerable}))),n.push.apply(n,r)}return n}function o(e){for(var t=1;t=0||(a[n]=e[n]);return a}(e,t);if(Object.getOwnPropertySymbols){var l=Object.getOwnPropertySymbols(e);for(r=0;r=0||Object.prototype.propertyIsEnumerable.call(e,n)&&(a[n]=e[n])}return a}var s=r.createContext({}),p=function(e){var t=r.useContext(s),n=t;return e&&(n="function"==typeof e?e(t):o(o({},t),e)),n},c=function(e){var t=p(e.components);return r.createElement(s.Provider,{value:t},e.children)},u={inlineCode:"code",wrapper:function(e){var t=e.children;return r.createElement(r.Fragment,{},t)}},m=r.forwardRef((function(e,t){var n=e.components,a=e.mdxType,l=e.originalType,s=e.parentName,c=i(e,["components","mdxType","originalType","parentName"]),m=p(n),k=a,d=m["".concat(s,".").concat(k)]||m[k]||u[k]||l;return n?r.createElement(d,o(o({ref:t},c),{},{components:n})):r.createElement(d,o({ref:t},c))}));function k(e,t){var n=arguments,a=t&&t.mdxType;if("string"==typeof e||a){var l=n.length,o=new Array(l);o[0]=m;var i={};for(var s in t)hasOwnProperty.call(t,s)&&(i[s]=t[s]);i.originalType=e,i.mdxType="string"==typeof e?e:a,o[1]=i;for(var p=2;p {\n console.log("You clicked me!");\n\n const pElem = document.createElement("p");\n pElem.textContent = "hello, hzfe.";\n document.body.appendChild(pElem);\n});\n')),(0,l.kt)("p",null,"\u5f02\u6b65\u56de\u8c03\u662f\u7f16\u5199\u548c\u5904\u7406 JavaScript \u5f02\u6b65\u903b\u8f91\u7684\u6700\u5e38\u7528\u65b9\u5f0f\uff0c\u4e5f\u662f\u6700\u57fa\u7840\u7684\u5f02\u6b65\u6a21\u5f0f\u3002\u4f46\u662f\u968f\u7740 JavaScript \u7684\u53d1\u5c55\uff0c\u5f02\u6b65\u56de\u8c03\u7684\u95ee\u9898\u4e5f\u4e0d\u5bb9\u5ffd\u89c6\uff1a"),(0,l.kt)("ol",null,(0,l.kt)("li",{parentName:"ol"},"\u56de\u8c03\u8868\u8fbe\u5f02\u6b65\u6d41\u7a0b\u7684\u65b9\u5f0f\u662f\u975e\u7ebf\u6027\u7684\uff0c\u975e\u987a\u5e8f\u7684\uff0c\u7406\u89e3\u6210\u672c\u8f83\u9ad8\u3002"),(0,l.kt)("li",{parentName:"ol"},"\u56de\u8c03\u4f1a\u53d7\u5230\u63a7\u5236\u53cd\u8f6c\u7684\u5f71\u54cd\u3002\u56e0\u4e3a\u56de\u8c03\u7684\u63a7\u5236\u6743\u5728\u7b2c\u4e09\u65b9\uff08\u5982 Ajax\uff09\uff0c\u7531\u7b2c\u4e09\u65b9\u6765\u8c03\u7528\u56de\u8c03\u51fd\u6570\uff0c\u65e0\u6cd5\u786e\u5b9a\u8c03\u7528\u662f\u5426\u7b26\u5408\u9884\u671f\u3002"),(0,l.kt)("li",{parentName:"ol"},"\u591a\u5c42\u5d4c\u5957\u56de\u8c03\u4f1a\u4ea7\u751f\u56de\u8c03\u5730\u72f1\uff08callback hell\uff09\u3002")),(0,l.kt)("h3",{id:"2-\u5b9a\u65f6\u5668settimeoutsetintervalrequestanimationframe"},"2. \u5b9a\u65f6\u5668\uff1asetTimeout/setInterval/requestAnimationFrame"),(0,l.kt)("p",null,"\u8fd9\u4e09\u4e2a\u90fd\u53ef\u4ee5\u7528\u5f02\u6b65\u65b9\u5f0f\u8fd0\u884c\u4ee3\u7801\u3002\u4e3b\u8981\u7279\u5f81\u5982\u4e0b\uff1a"),(0,l.kt)("ol",null,(0,l.kt)("li",{parentName:"ol"},"setTimeout\uff1a\u7ecf\u8fc7\u4efb\u610f\u65f6\u95f4\u540e\u8fd0\u884c\u51fd\u6570\uff0c",(0,l.kt)("strong",{parentName:"li"},"\u9012\u5f52 setTimeout \u5728 JavaScript \u7ebf\u7a0b\u4e0d\u963b\u585e\u60c5\u7684\u51b5\u4e0b\u53ef\u4fdd\u8bc1\u6267\u884c\u95f4\u9694\u76f8\u540c"),"\u3002"),(0,l.kt)("li",{parentName:"ol"},"setInterval\uff1a\u5141\u8bb8\u91cd\u590d\u6267\u884c\u4e00\u4e2a\u51fd\u6570\uff0c\u5e76\u8bbe\u7f6e\u65f6\u95f4\u95f4\u9694\uff0c",(0,l.kt)("strong",{parentName:"li"},"\u4e0d\u80fd\u4fdd\u8bc1\u6267\u884c\u95f4\u9694\u76f8\u540c"),"\u3002"),(0,l.kt)("li",{parentName:"ol"},"requestAnimationFrame\uff1a\u4ee5",(0,l.kt)("strong",{parentName:"li"},"\u5f53\u524d\u6d4f\u89c8\u5668/\u7cfb\u7edf\u7684\u6700\u4f73\u5e27\u901f\u7387"),"\u91cd\u590d\u4e14\u9ad8\u6548\u5730\u8fd0\u884c\u51fd\u6570\u7684\u65b9\u6cd5\u3002\u4e00\u822c\u7528\u4e8e\u5904\u7406\u52a8\u753b\u6548\u679c\u3002")),(0,l.kt)("p",null,"setInterval \u4f1a\u6309\u8bbe\u5b9a\u7684\u65f6\u95f4\u95f4\u9694\u56fa\u5b9a\u8c03\u7528\uff0c\u5176\u4e2d setInterval \u91cc\u9762\u7684\u4ee3\u7801\u7684\u6267\u884c\u65f6\u95f4\u4e5f\u5305\u542b\u5728\u5185\uff0c\u6240\u4ee5",(0,l.kt)("strong",{parentName:"p"},"\u5b9e\u9645\u95f4\u9694\u5c0f\u4e8e\u8bbe\u5b9a\u7684\u65f6\u95f4\u95f4\u9694"),"\u3002\u800c\u9012\u5f52 setTimeout \u662f\u8c03\u7528\u65f6\u624d\u5f00\u59cb\u7b97\u65f6\u95f4\uff0c\u53ef\u4ee5\u4fdd\u8bc1\u591a\u6b21\u9012\u5f52\u8c03\u7528\u65f6\u7684\u95f4\u9694\u76f8\u540c\u3002"),(0,l.kt)("p",null,"\u5982\u679c\u5f53\u524d JavaScript \u7ebf\u7a0b",(0,l.kt)("strong",{parentName:"p"},"\u963b\u585e"),"\uff0c\u8f6e\u5230\u7684 setInterval \u65e0\u6cd5\u6267\u884c\uff0c\u90a3\u4e48\u672c\u6b21\u4efb\u52a1\u5c31\u4f1a",(0,l.kt)("strong",{parentName:"p"},"\u88ab\u4e22\u5f03"),"\u3002\u800c setTimeout \u88ab\u963b\u585e\u540e\u4e0d\u4f1a",(0,l.kt)("strong",{parentName:"p"},"\u88ab\u4e22\u5f03"),"\uff0c\u7b49\u5230\u7a7a\u95f2\u65f6\u4f1a\u7ee7\u7eed\u6267\u884c\uff0c\u4f46\u65e0\u6cd5\u4fdd\u8bc1\u6267\u884c\u95f4\u9694\u3002"),(0,l.kt)("h3",{id:"3-\u53d1\u5e03\u8ba2\u9605\u6a21\u5f0fpublish-subscribe-pattern"},"3. \u53d1\u5e03/\u8ba2\u9605\u6a21\u5f0f\uff08publish-subscribe pattern\uff09"),(0,l.kt)("p",null,(0,l.kt)("strong",{parentName:"p"},"\u53d1\u5e03/\u8ba2\u9605\u6a21\u5f0f\u662f\u4e00\u79cd\u5bf9\u8c61\u95f4\u4e00\u5bf9\u591a\u7684\u4f9d\u8d56\u5173\u7cfb\uff0c\u5f53\u4e00\u4e2a\u5bf9\u8c61\u7684\u72b6\u6001\u53d1\u751f\u6539\u53d8\u65f6\uff0c\u6240\u6709\u4f9d\u8d56\u4e8e\u5b83\u7684\u5bf9\u8c61\u90fd\u5c06\u5f97\u5230\u72b6\u6001\u6539\u53d8\u7684\u901a\u77e5\u3002")),(0,l.kt)("p",null,"\u4e0a\u9762\u5f02\u6b65\u56de\u8c03\u7684\u4f8b\u5b50\u4e5f\u662f\u4e00\u4e2a\u53d1\u5e03/\u8ba2\u9605\u6a21\u5f0f\uff08publish-subscribe pattern\uff09\u7684\u5b9e\u73b0\u3002\u8ba2\u9605 btn \u7684 click \u4e8b\u4ef6\uff0c\u5f53 btn \u88ab\u70b9\u51fb\u65f6\u5411\u8ba2\u9605\u8005\u53d1\u9001\u8fd9\u4e2a\u6d88\u606f\uff0c\u6267\u884c\u5bf9\u5e94\u7684\u64cd\u4f5c\u3002"),(0,l.kt)("pre",null,(0,l.kt)("code",{parentName:"pre",className:"language-js"},'class PubSub {\n constructor() {\n // \u5b58\u50a8\u6240\u6709\u8ba2\u9605\u7684\u4e8b\u4ef6\u7c7b\u578b\u53ca\u5bf9\u5e94\u7684\u8ba2\u9605\u51fd\u6570\u6570\u7ec4\n // key : value []\n this.handlers = {};\n }\n // \u8ba2\u9605\u4e8b\u4ef6\u65b9\u6cd5\n on(eventType, handler) {\n if (!(eventType in this.handlers)) this.handlers[eventType] = [];\n this.handlers[eventType].push(handler);\n }\n // \u6d88\u606f\u53d1\u5e03\u65b9\u6cd5\n emit(eventType, ...handlerArgs) {\n this.handlers[eventType].forEach((v) => {\n v(...handlerArgs);\n });\n }\n // \u53d6\u6d88\u8ba2\u9605\n remove(eventType, handler) {\n // \u6ca1\u6709\u4f20\u5165\u5177\u4f53\u7684\u4e8b\u4ef6\u5904\u7406\u51fd\u6570\uff0c\u5219\u79fb\u9664\u8be5\u4e8b\u4ef6\u7c7b\u578b\u7684\u6240\u6709\u8ba2\u9605\u51fd\u6570\n // \u6709\u5219\u5728\u8ba2\u9605\u6570\u7ec4\u4e2d\u79fb\u9664\u5bf9\u5e94\u7684\u51fd\u6570\n if (!handler) {\n this.handlers[eventType].length = 0;\n } else {\n const key = this.handlers[eventType].findIndex((v) => v === handler);\n if (key !== -1) this.handlers[eventType].splice(key, 1);\n }\n }\n}\n\nconst test1 = new PubSub();\nconst fn1 = (...data) => console.log(data);\ntest1.on("event1", fn1);\ntest1.on("event1", (...data) => console.log(`fn2: ${data}`));\ntest1.emit("event1", "hzfe1", "hzfe2", "hzfe3");\ntest1.remove("event1", fn1);\n// ["hzfe1", "hzfe2", "hzfe3"] fn1\u6253\u5370\n// fn2: hzfe1,hzfe2,hzfe3\n')),(0,l.kt)("p",null,"\u53d1\u5e03/\u8ba2\u9605\u6a21\u5f0f\u53ef\u4ee5\u66f4\u7ec6\u81f4\u5730\u4e86\u89e3\u5230\u6709\u591a\u5c11\u79cd\u4e8b\u4ef6\u7c7b\u578b\u4ee5\u53ca\u6bcf\u79cd\u7c7b\u578b\u5bf9\u5e94\u7684\u8ba2\u9605\u4e8b\u4ef6\uff0c\u65b9\u4fbf\u8fdb\u4e00\u6b65\u7684\u76d1\u542c\u4e0e\u63a7\u5236\u3002"),(0,l.kt)("h3",{id:"4-promise"},"4. Promise"),(0,l.kt)("p",null,"Promise \u63d0\u4f9b\u4e86\u5b8c\u6210\u548c\u62d2\u7edd\u4e24\u4e2a\u72b6\u6001\u6765\u6807\u8bc6\u5f02\u6b65\u64cd\u4f5c\u7ed3\u679c\uff0c\u901a\u8fc7 then \u548c catch \u53ef\u4ee5\u5206\u522b\u5bf9\u7740\u4e24\u4e2a\u72b6\u6001\u8fdb\u884c\u8ddf\u8e2a\u5904\u7406\u3002\u548c\u4e8b\u4ef6\u76d1\u542c\u7684\u4e3b\u8981\u5dee\u522b\u5728\u4e8e\uff1a"),(0,l.kt)("ol",null,(0,l.kt)("li",{parentName:"ol"},"\u4e00\u4e2a Promise \u53ea\u80fd\u6210\u529f\u6216\u5931\u8d25\u4e00\u6b21\uff0c\u4e00\u65e6\u72b6\u6001\u6539\u53d8\uff0c\u5c31\u65e0\u6cd5\u4ece\u6210\u529f\u5207\u6362\u5230\u5931\u8d25\uff0c\u53cd\u4e4b\u4ea6\u7136\u3002"),(0,l.kt)("li",{parentName:"ol"},"\u5982\u679c Promise \u6210\u529f\u6216\u5931\u8d25\uff0c\u90a3\u4e48\u5373\u4f7f\u5728\u4e8b\u4ef6\u53d1\u751f\u4e4b\u540e\u6dfb\u52a0\u6210\u529f/\u5931\u8d25\u56de\u8c03\uff0c\u4e5f\u5c06\u8c03\u7528\u6b63\u786e\u7684\u56de\u8c03\u3002")),(0,l.kt)("p",null,"Promise \u4f7f\u7528\u987a\u5e8f\u7684\u65b9\u5f0f\u6765\u8868\u8fbe\u5f02\u6b65\uff0c\u5c06\u56de\u8c03\u7684\u63a7\u5236\u6743\u8f6c\u4ea4\u7ed9\u4e86\u53ef\u4ee5\u4fe1\u4efb\u7684 Promise.resolve()\uff0c\u540c\u65f6\u4e5f\u80fd\u591f\u4f7f\u7528\u94fe\u5f0f\u6d41\u7684\u65b9\u5f0f\u907f\u514d\u56de\u8c03\u5730\u72f1\u7684\u4ea7\u751f\uff0c\u89e3\u51b3\u4e86\u5f02\u6b65\u56de\u8c03\u7684\u95ee\u9898\u3002\u4f46 Promise \u4e5f\u6709\u7f3a\u9677\uff1a"),(0,l.kt)("ol",null,(0,l.kt)("li",{parentName:"ol"},"\u987a\u5e8f\u9519\u8bef\u5904\u7406\uff1a\u5982\u679c\u4e0d\u8bbe\u7f6e\u56de\u8c03\u51fd\u6570\uff0cPromise \u94fe\u4e2d\u7684\u9519\u8bef\u5f88\u5bb9\u6613\u88ab\u5ffd\u7565\u3002"),(0,l.kt)("li",{parentName:"ol"},"\u5355\u51b3\u8bae\uff1aPromise \u53ea\u80fd\u88ab\u51b3\u8bae\u4e00\u6b21\uff08\u5b8c\u6210\u6216\u62d2\u7edd\uff09\uff0c\u4e0d\u80fd\u5f88\u597d\u5730\u652f\u6301\u591a\u6b21\u89e6\u53d1\u7684\u4e8b\u4ef6\u53ca\u6570\u636e\u6d41\uff08\u652f\u6301\u7684",(0,l.kt)("a",{parentName:"li",href:"https://streams.spec.whatwg.org/"},"\u6807\u51c6"),"\u6b63\u5728\u5236\u5b9a\u4e2d\uff09\u3002"),(0,l.kt)("li",{parentName:"ol"},"\u65e0\u6cd5\u83b7\u53d6\u72b6\u6001\uff1a\u5904\u4e8e Pending \u72b6\u6001\u65f6\uff0c\u65e0\u6cd5\u5f97\u77e5\u76ee\u524d\u8fdb\u5c55\u5230\u54ea\u4e00\u4e2a\u9636\u6bb5\uff08\u521a\u521a\u5f00\u59cb\u8fd8\u662f\u5373\u5c06\u5b8c\u6210\uff09\u3002"),(0,l.kt)("li",{parentName:"ol"},"\u65e0\u6cd5\u53d6\u6d88\uff1a\u4e00\u65e6\u521b\u5efa\u4e86 Promise \u5e76\u6ce8\u518c\u4e86\u5b8c\u6210/\u62d2\u7edd\u51fd\u6570\uff0c\u4e0d\u80fd\u53d6\u6d88\u6267\u884c\u3002")),(0,l.kt)("h3",{id:"5-\u751f\u6210\u5668-generator"},"5. \u751f\u6210\u5668 Generator"),(0,l.kt)("p",null,"Generator \u51fd\u6570\u662f ES6 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