{"id":366,"date":"2026-06-26T13:34:53","date_gmt":"2026-06-26T13:34:53","guid":{"rendered":"https:\/\/aabbee.cafe24.com\/?p=366"},"modified":"2026-06-26T13:34:53","modified_gmt":"2026-06-26T13:34:53","slug":"map","status":"publish","type":"post","link":"https:\/\/coalacoding.com\/?p=366","title":{"rendered":"map"},"content":{"rendered":"<h2>1. map \ud568\uc218<\/h2>\n<p>JavaScript\uc5d0\uc11c &#39;map&#39; \ud568\uc218\ub294 \ubc30\uc5f4\uc758 \uac01 \uc694\uc18c\ub97c \uc21c\ud68c\ud558\uba74\uc11c, \uac01 \uc694\uc18c\uc5d0 \ub300\ud574 \ucf5c\ubc31 \ud568\uc218\ub97c \ud638\ucd9c\ud558\uace0 \uadf8 \ubc18\ud658\uac12\ub4e4\uc744 \ubaa8\uc544\uc11c \uc0c8\ub85c\uc6b4 \ubc30\uc5f4\uc744 \ub9cc\ub4dc\ub294 \ud568\uc218\uc785\ub2c8\ub2e4. &#39;map&#39; \ud568\uc218\ub97c \uc774\uc6a9\ud558\uba74 \ucf54\ub4dc\uc758 \uc911\ubcf5\uc744 \uc904\uc774\uace0 \uac00\ub3c5\uc131\uc744 \ub192\uc77c \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<h4>\uc0ac\uc6a9\ubc95<\/h4>\n<pre><code class=\"language-text\">const numbers = [1, 2, 3, 4, 5];\nconst doubledNumbers = numbers.map(number =&gt; number * 2);\nconsole.log(doubledNumbers); \/\/ [2, 4, 6, 8, 10]\n<\/code><\/pre>\n<h4>\ucc38\uace0\uc790\ub8cc<\/h4>\n<ul>\n<li><a href=\"https:\/\/developer.mozilla.org\/ko\/docs\/Web\/JavaScript\/Reference\/Global_Objects\/Array\/map\">MDN Web Docs: Array.prototype.map()<\/a><\/li>\n<\/ul>\n<hr>\n<p>  map \uba54\uc18c\ub4dc: \ubc30\uc5f4\uc774 \uac16\uace0\uc788\ub294 \ud569\uc218. \ucf5c\ubc31\ud568\uc218\uc5d0\uc11c \ub9ac\ud134\ub41c \uac12\uc744 \uae30\ubc18\uc73c\ub85c \uc0c8 \ubc30\uc5f4 \uc0dd\uc131\ud568<\/p>\n<pre><code class=\"language-javascript\">    \n  \n      \/*\uae30\uc874\uc758 \ubc30\uc5f4\uc694\uc18c\ub97c \uae30\ubc18\uc73c\ub85c \uc0c8\ub85c\uc6b4 \ubc30\uc5f4\uc694\uc18c\ub97c \ub9cc\ub4e4\uc5b4 \ub9ac\ud134*\/\n      let cats=[&#39;\ub545\ucf69&#39;,&#39;\uc5bc\ub8e9&#39;,&#39;\ud68c\uc0c9&#39;];\n      cats=cats.map(function(value,index){\n        return value+&quot;\ubc25\uba39\uc790!!&quot;\n      })\n\t\tconsole.log(cats)\n\n<\/code><\/pre>\n<pre><code class=\"language-javascript\">\/**\n * \ubaa8\ub4e0\uc218\ub97c \uc81c\uacf1\ud558\ub77c\n *\/\n\/\/ \ubc30\uc5f4\uc120\uc5b8\nlet numbers = [273, 52, 103, 32, 57];\n\n\/\/ \ubc30\uc5f4\uc758 \ubaa8\ub4e0 \uac12\uc744 \uc81c\uacf1\ud558\uc5ec numbers\uc5d0 \ud560\ub2f9\nnumbers = numbers.map(function (value, index, array) {\n\treturn value * value;\n});\n\n\/\/ numbers\uc758 \uc694\uc18c\ub97c console.log \uc5d0 \uc21c\ud68c\ud55c\ub2e4\nnumbers.forEach(console.log);\n<\/code><\/pre>\n<p><Accordion title=\"\uacb0\uacfc\"><br \/>\n![](https:\/\/aabbee.cafe24.com\/wp-content\/uploads\/2026\/06\/01-27.png)<br \/>\n<\/Accordion><\/p>\n","protected":false},"excerpt":{"rendered":"<p>1. map \ud568\uc218 JavaScript\uc5d0\uc11c &#39;map&#39; \ud568\uc218\ub294 \ubc30\uc5f4\uc758 \uac01 \uc694\uc18c\ub97c \uc21c\ud68c\ud558\uba74\uc11c, \uac01 \uc694\uc18c\uc5d0 \ub300\ud574 \ucf5c\ubc31 \ud568\uc218\ub97c \ud638\ucd9c\ud558\uace0 \uadf8 \ubc18\ud658\uac12\ub4e4\uc744 \ubaa8\uc544\uc11c \uc0c8\ub85c\uc6b4 \ubc30\uc5f4\uc744 \ub9cc\ub4dc\ub294 \ud568\uc218\uc785\ub2c8\ub2e4. &#39;map&#39; \ud568\uc218\ub97c \uc774\uc6a9\ud558\uba74 \ucf54\ub4dc\uc758 \uc911\ubcf5\uc744 \uc904\uc774\uace0 \uac00\ub3c5\uc131\uc744 \ub192\uc77c \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc0ac\uc6a9\ubc95 const numbers = [1, 2, 3, 4, 5]; const doubledNumbers = numbers.map(number =&gt; number * 2); console.log(doubledNumbers); \/\/ [2, 4, 6, &#8230; <a title=\"map\" class=\"read-more\" href=\"https:\/\/coalacoding.com\/?p=366\" aria-label=\"map\uc5d0 \ub300\ud574 \ub354 \uc790\uc138\ud788 \uc54c\uc544\ubcf4\uc138\uc694\">\ub354 \uc77d\uae30<\/a><\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15],"tags":[],"class_list":["post-366","post","type-post","status-publish","format-standard","hentry","category-javascript-basics"],"_links":{"self":[{"href":"https:\/\/coalacoding.com\/index.php?rest_route=\/wp\/v2\/posts\/366","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/coalacoding.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/coalacoding.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/coalacoding.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=366"}],"version-history":[{"count":1,"href":"https:\/\/coalacoding.com\/index.php?rest_route=\/wp\/v2\/posts\/366\/revisions"}],"predecessor-version":[{"id":368,"href":"https:\/\/coalacoding.com\/index.php?rest_route=\/wp\/v2\/posts\/366\/revisions\/368"}],"wp:attachment":[{"href":"https:\/\/coalacoding.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=366"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/coalacoding.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=366"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/coalacoding.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=366"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}