{"id":25936,"date":"2024-10-27T06:48:35","date_gmt":"2024-10-27T06:48:35","guid":{"rendered":"http:\/\/atmokpo.com\/w\/?p=25936"},"modified":"2024-11-26T07:50:00","modified_gmt":"2024-11-26T07:50:00","slug":"%eb%a6%ac%ec%95%a1%ed%8a%b8-%ea%b0%95%ec%a2%8c-%eb%b6%88%ed%95%84%ec%9a%94%ed%95%9c-%ec%bb%b4%ed%8f%ac%eb%84%8c%ed%8a%b8-%eb%a6%ac%eb%a0%8c%eb%8d%94-%eb%b0%a9%ec%a7%80%ed%95%98%ea%b8%b0","status":"publish","type":"post","link":"https:\/\/atmokpo.com\/w\/25936\/","title":{"rendered":"\ub9ac\uc561\ud2b8 \uac15\uc88c: \ubd88\ud544\uc694\ud55c \ucef4\ud3ec\ub10c\ud2b8 \ub9ac\ub80c\ub354 \ubc29\uc9c0\ud558\uae30"},"content":{"rendered":"<p><body><\/p>\n<h2>1. \ub4e4\uc5b4\uac00\uba70<\/h2>\n<p>\ub9ac\uc561\ud2b8\ub294 \uc0ac\uc6a9\uc790 \uc778\ud130\ud398\uc774\uc2a4\ub97c \uad6c\ucd95\ud558\uae30 \uc704\ud55c \ub9e4\uc6b0 \uac15\ub825\ud558\uace0 \uc720\uc5f0\ud55c \ub77c\uc774\ube0c\ub7ec\ub9ac\uc785\ub2c8\ub2e4. \uadf8\ub7ec\ub098, \uac01\uc885 \ucef4\ud3ec\ub10c\ud2b8\uac00 \ub80c\ub354\ub9c1\ub418\ub294 \ubc29\uc2dd \ub54c\ubb38\uc5d0 \uc131\ub2a5 \ubb38\uc81c\uac00 \ubc1c\uc0dd\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ud2b9\ud788, \ubd88\ud544\uc694\ud55c \ucef4\ud3ec\ub10c\ud2b8 \ub9ac\ub80c\ub354\ub9c1\uc740 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc758 \uc131\ub2a5\uc744 \uc800\ud558\uc2dc\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ubc88 \uac15\uc88c\uc5d0\uc11c\ub294 \ub9ac\uc561\ud2b8\uc5d0\uc11c \ubd88\ud544\uc694\ud55c \ucef4\ud3ec\ub10c\ud2b8 \ub9ac\ub80c\ub354\ub9c1\uc744 \ubc29\uc9c0\ud558\uae30 \uc704\ud55c \ub2e4\uc591\ud55c \uae30\ubc95\uc744 \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<h2>2. \ub9ac\ub80c\ub354\ub9c1\uc758 \uc774\ud574<\/h2>\n<p>\ub9ac\uc561\ud2b8\uc5d0\uc11c\ub294 \uc0c1\ud0dc(state)\ub098 \uc18d\uc131(props)\uc774 \ubcc0\uacbd\ub418\uba74 \ud574\ub2f9 \ucef4\ud3ec\ub10c\ud2b8\uac00 \ub9ac\ub80c\ub354\ub9c1 \ub429\ub2c8\ub2e4. \ube44\ub85d \uc774\ub77c\ub294 \uae30\ubcf8\uc801\uc778 \ub3d9\uc791\uc774 \uc815\uc0c1\uc801\uc774\uc9c0\ub9cc, \uacfc\ub3c4\ud55c \ub9ac\ub80c\ub354\ub9c1\uc740 \uc131\ub2a5 \uc774\uc288\ub97c \ucd08\ub798\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub530\ub77c\uc11c \ub9ac\ub80c\ub354\ub9c1\uc744 \ud6a8\uacfc\uc801\uc73c\ub85c \uad00\ub9ac\ud558\ub294 \uac83\uc774 \uc911\uc694\ud569\ub2c8\ub2e4.<\/p>\n<h3>2.1. \ub9ac\ub80c\ub354\ub9c1\uc774 \ubc1c\uc0dd\ud558\ub294 \uacbd\uc6b0<\/h3>\n<p>\ub9ac\uc561\ud2b8\uc5d0\uc11c \ub9ac\ub80c\ub354\ub9c1\uc774 \ubc1c\uc0dd\ud558\ub294 \uc8fc\uc694 \uacbd\uc6b0\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n<ul>\n<li>\ucef4\ud3ec\ub10c\ud2b8\uc758 state\uac00 \ubcc0\uacbd\ub420 \ub54c<\/li>\n<li>\ucef4\ud3ec\ub10c\ud2b8\uc758 props\uac00 \ubcc0\uacbd\ub420 \ub54c<\/li>\n<li>\ubd80\ubaa8 \ucef4\ud3ec\ub10c\ud2b8\uac00 \ub9ac\ub80c\ub354\ub9c1\ub420 \ub54c \uc790\uc2dd \ucef4\ud3ec\ub10c\ud2b8\ub3c4 \ub9ac\ub80c\ub354\ub9c1\ub428<\/li>\n<\/ul>\n<h3>2.2. \uacfc\ub3c4\ud55c \ub9ac\ub80c\ub354\ub9c1\uc758 \ube44\uc6a9<\/h3>\n<p>\ubd88\ud544\uc694\ud55c \ub9ac\ub80c\ub354\ub9c1\uc740 \ub2e4\uc74c\uacfc \uac19\uc740 \ubb38\uc81c\ub97c \ucd08\ub798\ud569\ub2c8\ub2e4:<\/p>\n<ul>\n<li>\uc131\ub2a5 \uc800\ud558: \ub80c\ub354\ub9c1\uc774 \uc790\uc8fc \uc77c\uc5b4\ub098\uba74 \uc560\ud50c\ub9ac\ucf00\uc774\uc158 \ubc18\uc751 \uc18d\ub3c4\uac00 \ub290\ub824\uc9c8 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<li>\uba54\ubaa8\ub9ac \uc0ac\uc6a9 \uc99d\uac00: \ub9ac\ub80c\ub354\ub9c1\uc73c\ub85c \uc778\ud574 \ubd88\ud544\uc694\ud55c \uba54\ubaa8\ub9ac \uc0ac\uc6a9\uc774 \uc99d\uac00\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<li>\uc720\uc800 \uacbd\ud5d8 \uc800\ud558: \uc560\ud50c\ub9ac\ucf00\uc774\uc158 \uc18d\ub3c4\uac00 \ub290\ub824\uc9c0\uba74 \uc0ac\uc6a9\uc790 \uacbd\ud5d8\uc5d0\ub3c4 \ubd80\uc815\uc801\uc778 \uc601\ud5a5\uc744 \ubbf8\uce69\ub2c8\ub2e4.<\/li>\n<\/ul>\n<h2>3. \ubd88\ud544\uc694\ud55c \ub9ac\ub80c\ub354\ub9c1 \ubc29\uc9c0\ud558\uae30<\/h2>\n<h3>3.1. React.memo \uc0ac\uc6a9\ud558\uae30<\/h3>\n<p>\ub9ac\uc561\ud2b8\ub294 <code>React.memo<\/code>\ub77c\ub294 \uace0\ucc28 \ucef4\ud3ec\ub10c\ud2b8\ub97c \uc81c\uacf5\ud558\uc5ec \ucef4\ud3ec\ub10c\ud2b8\uc758 \ub9ac\ub80c\ub354\ub9c1\uc744 \ubc29\uc9c0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. <code>React.memo<\/code>\ub97c \uc0ac\uc6a9\ud558\uba74 \ub3d9\uc77c\ud55c props\uac00 \uc804\ub2ec\ub420 \uacbd\uc6b0 \ucef4\ud3ec\ub10c\ud2b8\ub97c \ub9ac\ub80c\ub354\ub9c1\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/p>\n<pre><code>import React, { memo } from 'react';\n\nconst MyComponent = memo(({ title }) =&gt; {\n  return &lt;h1&gt;{title}&lt;\/h1&gt;;\n});\n<\/code><\/pre>\n<h3>3.2. useMemo\uc640 useCallback<\/h3>\n<p>\ub9ac\uc561\ud2b8\uc758 \ud6c5 \uc911 <code>useMemo<\/code>\uc640 <code>useCallback<\/code>\uc744 \uc0ac\uc6a9\ud558\uba74 \ub9ac\ub80c\ub354\ub9c1\uc744 \ucd5c\uc801\ud654\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub4e4\uc740 \uac01\uac01 \uba54\ubaa8\uc774\uc81c\uc774\uc158\ub41c \uac12\uc744 \ubc18\ud658\ud558\uace0, \uba54\ubaa8\uc774\uc81c\uc774\uc158\ub41c \ud568\uc218\ub97c \ubc18\ud658\ud558\uc5ec \ubd88\ud544\uc694\ud55c \ub80c\ub354\ub9c1\uc744 \ubc29\uc9c0\ud569\ub2c8\ub2e4.<\/p>\n<pre><code>import React, { useMemo, useCallback } from 'react';\n\nconst MyComponent = ({ items }) =&gt; {\n  const total = useMemo(() =&gt; calculateTotal(items), [items]);\n  const handleClick = useCallback(() =&gt; {\n    console.log('Clicked!');\n  }, []);\n\n  return (\n    &lt;div&gt;\n      &lt;h1&gt;Total: {total}&lt;\/h1&gt;\n      &lt;button onClick={handleClick}&gt;Click me&lt;\/button&gt;\n    &lt;\/div&gt;\n  );\n};\n<\/code><\/pre>\n<h3>3.3. PureComponent\uc640 shouldComponentUpdate<\/h3>\n<p>\ud074\ub798\uc2a4\ud615 \ucef4\ud3ec\ub10c\ud2b8\uc5d0\uc11c\ub294 <code>PureComponent<\/code>\ub97c \uc0c1\uc18d\ubc1b\uc544 \ubd88\ud544\uc694\ud55c \ub9ac\ub80c\ub354\ub9c1\uc744 \ubc29\uc9c0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. <code>PureComponent<\/code>\ub294 \uae30\ubcf8\uc801\uc73c\ub85c props\uc640 state\uc758 \uc595\uc740 \ubcc0\ud654\ub97c \ube44\uad50\ud558\uc5ec \ubcc0\uacbd\uc774 \uc5c6\uc73c\uba74 \ub9ac\ub80c\ub354\ub9c1\uc744 \ubc29\uc9c0\ud569\ub2c8\ub2e4.<\/p>\n<pre><code>import React, { PureComponent } from 'react';\n\nclass MyComponent extends PureComponent {\n  render() {\n    return &lt;h1&gt;{this.props.title}&lt;\/h1&gt;;\n  }\n}\n<\/code><\/pre>\n<h3>3.4. \uc0c1\ud0dc \uad00\ub9ac \ucd5c\uc801\ud654<\/h3>\n<p>\uc0c1\ud0dc \uad00\ub9ac \ub77c\uc774\ube0c\ub7ec\ub9ac(\uc608: Redux, MobX)\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc804\uc5ed \uc0c1\ud0dc\ub97c \uad00\ub9ac\ud558\uba74 \ubd88\ud544\uc694\ud55c \ub9ac\ub80c\ub354\ub9c1\uc744 \uc904\uc77c \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc0c1\ud0dc\ub97c \uc801\uc808\ud788 \ubd84\ub9ac\ud558\uc5ec \ud2b9\uc815 \ucef4\ud3ec\ub10c\ud2b8\ub9cc \ub9ac\ub80c\ub354\ub9c1\ub418\ub3c4\ub85d \ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<h2>4. \ub9ac\ub80c\ub354\ub9c1 \ucd5c\uc801\ud654 \ubc29\ubc95 \uc0ac\ub840<\/h2>\n<p>\ub2e4\uc74c\uc740 \ub9ac\ub80c\ub354\ub9c1 \ucd5c\uc801\ud654\ub97c \uc801\uc6a9\ud55c \uc608\uc81c\uc785\ub2c8\ub2e4.<\/p>\n<pre><code>import React, { useState, memo } from 'react';\n\nconst Item = memo(({ item }) =&gt; {\n  console.log('Item rendered');\n  return &lt;div&gt;{item.name}&lt;\/div&gt;;\n});\n\nconst ItemList = ({ items }) =&gt; {\n  return items.map(item =&gt; &lt;Item key={item.id} item={item} \/&gt;);\n};\n\nconst MyComponent = () =&gt; {\n  const [items, setItems] = useState([{ id: 1, name: 'Item 1' }, { id: 2, name: 'Item 2' }]);\n  const [counter, setCounter] = useState(0);\n\n  return (\n    &lt;div&gt;\n      &lt;h1&gt;Counter: {counter}&lt;\/h1&gt;\n      &lt;button onClick={() =&gt; setCounter(counter + 1)}&gt;Increment Counter&lt;\/button&gt;\n      &lt;ItemList items={items} \/&gt;\n    &lt;\/div&gt;\n  );\n};\n<\/code><\/pre>\n<h2>5. \uacb0\ub860<\/h2>\n<p>\ub9ac\uc561\ud2b8 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0\uc11c \uc131\ub2a5\uc744 \ucd5c\uc801\ud654\ud558\uae30 \uc704\ud574\uc11c\ub294 \ubd88\ud544\uc694\ud55c \ucef4\ud3ec\ub10c\ud2b8 \ub9ac\ub80c\ub354\ub9c1\uc744 \ubc29\uc9c0\ud558\ub294 \uac83\uc774 \ud544\uc218\uc801\uc785\ub2c8\ub2e4. <code>React.memo<\/code>, <code>useMemo<\/code>, <code>useCallback<\/code>, <code>PureComponent<\/code>\uc640 \uac19\uc740 \ub2e4\uc591\ud55c \uae30\ubc95\uc744 \ud65c\uc6a9\ud558\uba74 \ubcf4\ub2e4 \uc131\ub2a5\uc774 \ub6f0\uc5b4\ub09c \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc744 \ub9cc\ub4e4 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc5ec\ub7ec\ubd84\uc758 \ub9ac\uc561\ud2b8 \ud504\ub85c\uc81d\ud2b8\uc5d0 \ucd5c\uc801\ud654\ub97c \uc801\uc6a9\ud558\uc5ec \ub354 \ub098\uc740 \uc0ac\uc6a9\uc790 \uacbd\ud5d8\uc744 \uc81c\uacf5\ud574\ubcf4\uc138\uc694!<\/p>\n<p><\/body><\/p>\n","protected":false},"excerpt":{"rendered":"<p>1. \ub4e4\uc5b4\uac00\uba70 \ub9ac\uc561\ud2b8\ub294 \uc0ac\uc6a9\uc790 \uc778\ud130\ud398\uc774\uc2a4\ub97c \uad6c\ucd95\ud558\uae30 \uc704\ud55c \ub9e4\uc6b0 \uac15\ub825\ud558\uace0 \uc720\uc5f0\ud55c \ub77c\uc774\ube0c\ub7ec\ub9ac\uc785\ub2c8\ub2e4. \uadf8\ub7ec\ub098, \uac01\uc885 \ucef4\ud3ec\ub10c\ud2b8\uac00 \ub80c\ub354\ub9c1\ub418\ub294 \ubc29\uc2dd \ub54c\ubb38\uc5d0 \uc131\ub2a5 \ubb38\uc81c\uac00 \ubc1c\uc0dd\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ud2b9\ud788, \ubd88\ud544\uc694\ud55c \ucef4\ud3ec\ub10c\ud2b8 \ub9ac\ub80c\ub354\ub9c1\uc740 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc758 \uc131\ub2a5\uc744 \uc800\ud558\uc2dc\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ubc88 \uac15\uc88c\uc5d0\uc11c\ub294 \ub9ac\uc561\ud2b8\uc5d0\uc11c \ubd88\ud544\uc694\ud55c \ucef4\ud3ec\ub10c\ud2b8 \ub9ac\ub80c\ub354\ub9c1\uc744 \ubc29\uc9c0\ud558\uae30 \uc704\ud55c \ub2e4\uc591\ud55c \uae30\ubc95\uc744 \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4. 2. \ub9ac\ub80c\ub354\ub9c1\uc758 \uc774\ud574 \ub9ac\uc561\ud2b8\uc5d0\uc11c\ub294 \uc0c1\ud0dc(state)\ub098 \uc18d\uc131(props)\uc774 \ubcc0\uacbd\ub418\uba74 \ud574\ub2f9 \ucef4\ud3ec\ub10c\ud2b8\uac00 \ub9ac\ub80c\ub354\ub9c1 \ub429\ub2c8\ub2e4. \ube44\ub85d \uc774\ub77c\ub294 &hellip; <a href=\"https:\/\/atmokpo.com\/w\/25936\/\" class=\"more-link\">\ub354 \ubcf4\uae30<span class=\"screen-reader-text\"> &#8220;\ub9ac\uc561\ud2b8 \uac15\uc88c: \ubd88\ud544\uc694\ud55c \ucef4\ud3ec\ub10c\ud2b8 \ub9ac\ub80c\ub354 \ubc29\uc9c0\ud558\uae30&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[20],"tags":[],"class_list":["post-25936","post","type-post","status-publish","format-standard","hentry","category-20"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\ub9ac\uc561\ud2b8 \uac15\uc88c: \ubd88\ud544\uc694\ud55c \ucef4\ud3ec\ub10c\ud2b8 \ub9ac\ub80c\ub354 \ubc29\uc9c0\ud558\uae30 - \ub77c\uc774\ube0c\uc2a4\ub9c8\ud2b8<\/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:\/\/atmokpo.com\/w\/25936\/\" \/>\n<meta property=\"og:locale\" content=\"ko_KR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\ub9ac\uc561\ud2b8 \uac15\uc88c: \ubd88\ud544\uc694\ud55c \ucef4\ud3ec\ub10c\ud2b8 \ub9ac\ub80c\ub354 \ubc29\uc9c0\ud558\uae30 - \ub77c\uc774\ube0c\uc2a4\ub9c8\ud2b8\" \/>\n<meta property=\"og:description\" content=\"1. \ub4e4\uc5b4\uac00\uba70 \ub9ac\uc561\ud2b8\ub294 \uc0ac\uc6a9\uc790 \uc778\ud130\ud398\uc774\uc2a4\ub97c \uad6c\ucd95\ud558\uae30 \uc704\ud55c \ub9e4\uc6b0 \uac15\ub825\ud558\uace0 \uc720\uc5f0\ud55c \ub77c\uc774\ube0c\ub7ec\ub9ac\uc785\ub2c8\ub2e4. \uadf8\ub7ec\ub098, \uac01\uc885 \ucef4\ud3ec\ub10c\ud2b8\uac00 \ub80c\ub354\ub9c1\ub418\ub294 \ubc29\uc2dd \ub54c\ubb38\uc5d0 \uc131\ub2a5 \ubb38\uc81c\uac00 \ubc1c\uc0dd\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ud2b9\ud788, \ubd88\ud544\uc694\ud55c \ucef4\ud3ec\ub10c\ud2b8 \ub9ac\ub80c\ub354\ub9c1\uc740 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc758 \uc131\ub2a5\uc744 \uc800\ud558\uc2dc\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ubc88 \uac15\uc88c\uc5d0\uc11c\ub294 \ub9ac\uc561\ud2b8\uc5d0\uc11c \ubd88\ud544\uc694\ud55c \ucef4\ud3ec\ub10c\ud2b8 \ub9ac\ub80c\ub354\ub9c1\uc744 \ubc29\uc9c0\ud558\uae30 \uc704\ud55c \ub2e4\uc591\ud55c \uae30\ubc95\uc744 \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4. 2. \ub9ac\ub80c\ub354\ub9c1\uc758 \uc774\ud574 \ub9ac\uc561\ud2b8\uc5d0\uc11c\ub294 \uc0c1\ud0dc(state)\ub098 \uc18d\uc131(props)\uc774 \ubcc0\uacbd\ub418\uba74 \ud574\ub2f9 \ucef4\ud3ec\ub10c\ud2b8\uac00 \ub9ac\ub80c\ub354\ub9c1 \ub429\ub2c8\ub2e4. \ube44\ub85d \uc774\ub77c\ub294 &hellip; \ub354 \ubcf4\uae30 &quot;\ub9ac\uc561\ud2b8 \uac15\uc88c: \ubd88\ud544\uc694\ud55c \ucef4\ud3ec\ub10c\ud2b8 \ub9ac\ub80c\ub354 \ubc29\uc9c0\ud558\uae30&quot;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/atmokpo.com\/w\/25936\/\" \/>\n<meta property=\"og:site_name\" content=\"\ub77c\uc774\ube0c\uc2a4\ub9c8\ud2b8\" \/>\n<meta property=\"article:published_time\" content=\"2024-10-27T06:48:35+00:00\" \/>\n<meta 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