{"id":661,"date":"2022-03-30T02:05:40","date_gmt":"2022-03-30T02:05:40","guid":{"rendered":"https:\/\/sap-learn-more.com\/?p=661"},"modified":"2022-03-30T02:05:40","modified_gmt":"2022-03-30T02:05:40","slug":"%ec%9e%90%eb%b0%94%ec%8a%a4%ed%81%ac%eb%a6%bd%ed%8a%b8-use-strict-%ec%82%ac%ec%9a%a9-%ec%9d%b4%ec%9c%a0","status":"publish","type":"post","link":"https:\/\/sap-learn-more.com\/%ec%9e%90%eb%b0%94%ec%8a%a4%ed%81%ac%eb%a6%bd%ed%8a%b8-use-strict-%ec%82%ac%ec%9a%a9-%ec%9d%b4%ec%9c%a0\/","title":{"rendered":"\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 use strict \uc0ac\uc6a9 \uc774\uc720"},"content":{"rendered":"<p>\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 use strict \ub294, js \ud30c\uc77c\uc744 \ubcf4\ub2e4\ubcf4\uba74 \uc8fc\uc11d\uc744 \uc81c\uc678\ud55c \uac00\uc7a5 \ud30c\uc77c\uc758 \uc717\ucabd\uc5d0 &#8216;use strict&#8217; \ub77c\ub294 \ucf54\ub4dc \ud615\ud0dc\ub85c \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/p>\n<p>use strict \ub294 \uc5c4\uaca9 \ubaa8\ub4dc\ub77c\uace0\ub3c4 \ud558\uba70, \ud30c\uc77c \uc804\uccb4\uc5d0 \uc801\uc6a9\ud560 \uc218\ub3c4, \ud639\uc740 \ud568\uc218 \ub2e8\uc704\ub85c\ub3c4 \uc801\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\ub530\ub77c\uc11c, \uc624\ud508\uc18c\uc2a4\ub098 \uc720\uc9c0\ubcf4\uc218 \ud558\ub294 \uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 \ucf54\ub4dc\uc5d0 use strict\uac00 \ubcf4\uc774\uba74 \uc624\ud574\uc758 \uc18c\uc9c0\uac00 \uc0dd\uae38 \uc218 \uc788\ub294 \uc560\ub9e4\ud55c \ucf54\ub4dc\ub294 \uc0ac\uc6a9\ud558\uc9c0 \uc54a\ub294 \uac83\uc774 \uc88b\uc2b5\ub2c8\ub2e4.<\/p>\n\n<p>&nbsp;<\/p>\n<h2>\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 use strict \uc758 \uac1c\ub150<\/h2>\n<div class=\"hcb_wrap\">\n<pre class=\"prism undefined-numbers lang-js\" data-lang=\"JavaScript\"><code>'use strict';\r\n<\/code><\/pre>\n<\/div>\n<p>\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 use strict\ub97c \uc120\uc5b8\ud558\uba74 \ub2e4\uc74c\uacfc \uac19\uc740 \uc7a5\uc810\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\uc880 \ub354 \uc548\uc804\ud55c \ucf54\ub4dc\ub97c \uc791\uc131\ud558\uac8c \ub429\ub2c8\ub2e4.<\/p>\n<p>\uae30\uc874 \uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8\uc758 \uc560\ub9e4\ud55c \ubb38\ubc95\ub4e4\uc740 \uc624\ub958\ub97c \ubc49\uae30 \ub54c\ubb38\uc5d0 \uc880 \ub354 \uc815\ud655\ud55c \ucf54\ub4dc\ub97c \uc791\uc131\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 \uc5d4\uc9c4\uc774 \uc790\ub3d9\uc73c\ub85c \ucd5c\uc801\ud654\ud558\uc5ec \uc218\ud589\ud558\uae30 \ub54c\ubb38\uc5d0 \ub354 \ube68\ub77c\uc9c0\ub294 \ubd80\ubd84\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p>&nbsp;<\/p>\n<h2>\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 use strict \uc608\uc81c<\/h2>\n<div class=\"hcb_wrap\">\n<pre class=\"prism undefined-numbers lang-js\" data-lang=\"JavaScript\"><code>  &lt;body&gt;\r\n    &lt;script&gt;\r\n      \"use strict\";\r\n      age = 100; \/\/ \uc0ac\uc6a9\ud558\uc9c0 \uc54a\uc740 \ubcc0\uc218 \uc624\ub958 \ubc1c\uc0dd\r\n       console.log( age );\r\n    &lt;\/script&gt;\r\n  &lt;\/body&gt;\r\n<\/code><\/pre>\n<\/div>\n<p><img decoding=\"async\" src=\"https:\/\/sap-learn-more.com\/wp-content\/uploads\/2022\/03\/\uc120\uc5b8\ud558\uc9c0-\uc54a\uc740-\ubcc0\uc218\ub294-\uc624\ub958-\ubc1c\uc0dd.png\" alt=\"\uc120\uc5b8\ud558\uc9c0 \uc54a\uc740 \ubcc0\uc218\ub294 \uc624\ub958 \ubc1c\uc0dd\" class=\"aligncenter\" \/><\/p>\n<p>\ub9cc\uc57d \uc544\ub798\uc640 \uac19\uc774 use strict \ub97c \uc81c\uc678\ud55c\ub2e4\uba74,<\/p>\n<div class=\"hcb_wrap\">\n<pre class=\"prism undefined-numbers lang-js\" data-lang=\"JavaScript\"><code>  &lt;body&gt;\r\n    &lt;script&gt;\r\n      \/\/\"use strict\";\r\n      age = 100; \/\/ \uc815\uc0c1\uc801\uc73c\ub85c \ud560\ub2f9\uc774 \ub428\r\n       console.log( age );\r\n    &lt;\/script&gt;\r\n  &lt;\/body&gt;\r\n<\/code><\/pre>\n<\/div>\n<p>use strict\ub97c \uc81c\uc678\ud558\uba74 \uc624\ub958\uc5c6\uc774 \uacb0\uacfc\uac00 \ub098\uc624\ub294 \uac83\uc744 \ud655\uc778\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/sap-learn-more.com\/wp-content\/uploads\/2022\/03\/use-strict\ub97c-\uc81c\uc678\ud558\uba74-\uc624\ub958\uc5c6\uc774-\uacb0\uacfc\uac00-\ub098\uc634.png\" alt=\"use strict\ub97c \uc81c\uc678\ud558\uba74 \uc624\ub958\uc5c6\uc774 \uacb0\uacfc\uac00 \ub098\uc634\" class=\"aligncenter\" \/><\/p>\n<p>\uc544\ub798\uc640 \uac19\uc774 &#8216;use strict&#8217; \uc815\uc758\ud55c \uc0c1\ud0dc\uc5d0\uc11c\ub294 \ubcc0\uc218\ub97c \uc0ad\uc81c\ud558\ub294 \ucf54\ub4dc \ub4f1\uc740 \uc0ac\uc6a9\ud560 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4.<\/p>\n<div class=\"hcb_wrap\">\n<pre class=\"prism undefined-numbers lang-js\" data-lang=\"JavaScript\"><code>&lt;body&gt;\r\n    &lt;script&gt;\r\n      function useStrictTest () {\r\n        'use strict';\r\n      \/\/ \ud56d\uc0c1 \uac00\uc7a5 \uc704\uc5d0 \uc0ac\uc6a9\ud574\uc57c \ud55c\ub2e4.\r\n\r\n\u00a0\r\n      var name = \"\ucca0\uc218\";\r\n      delete name; \/\/ \uc624\ub958 \ubc1c\uc0dd\r\n      console.log(name);\r\n      }\r\n\u00a0\r\n      useStrictTest();\r\n    &lt;\/script&gt;\r\n  &lt;\/body&gt;\r\n<\/code><\/pre>\n<\/div>\n<p><img decoding=\"async\" src=\"https:\/\/sap-learn-more.com\/wp-content\/uploads\/2022\/03\/use-strict-\uc815\uc758\ud55c-\uc0c1\ud0dc\uc5d0\uc11c\ub294-\ubcc0\uc218\ub97c-\uc0ad\uc81c\ud558\ub294-\ucf54\ub4dc-\ub4f1\uc740-\uc0ac\uc6a9\ud560-\uc218-\uc5c6\uc74c.png\" alt=\"use strict \uc815\uc758\ud55c \uc0c1\ud0dc\uc5d0\uc11c\ub294 \ubcc0\uc218\ub97c \uc0ad\uc81c\ud558\ub294 \ucf54\ub4dc \ub4f1\uc740 \uc0ac\uc6a9\ud560 \uc218 \uc5c6\uc74c\" class=\"aligncenter\" \/><\/p>\n<p>\ud574\ub2f9 \ucf54\ub4dc\ub97c \uc2e4\ud589\ud558\uba74 \ub2e4\uc74c\uacfc \uac19\uc774 Uncaught SyntaxError: Delete of an unqualified identifier in strict mode \uc5d0\ub7ec\uac00 \ubc1c\uc0dd\ud569\ub2c8\ub2e4.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/sap-learn-more.com\/wp-content\/uploads\/2022\/03\/Uncaught-SyntaxError-Delete-of-an-unqualified-identifier-in-strict-mode-\uc5d0\ub7ec\ubc1c\uc0dd.png\" alt=\"Uncaught SyntaxError Delete of an unqualified identifier in strict mode \uc5d0\ub7ec\ubc1c\uc0dd\" class=\"aligncenter\" \/><\/p>\n<p>\uc608\uc2dc\ub97c \uc704\ud574 function \uc2a4\ucf54\ud504\uc5d0\uc11c use strict\ub97c \uc0ac\uc6a9\ud558\uc600\uc73c\ub098, \ud568\uc218 \ubc16\uc5d0\uc11c\ub294 strict \ubaa8\ub4dc\uac00 \uc544\ub2cc\ub370 \ud2b9\uc815 \ud568\uc218\ub0b4\uc5d0\uc11c\ub9cc strict \ubaa8\ub4dc? \uc774\ub7ec\ud55c \uc0c1\ud669\uc740 \ucf54\ub4dc \uc791\uc131\uc5d0 \ubaa8\ud638\ud568\uc744 \uc904 \uc218 \uc788\uae30 \ub54c\ubb38\uc5d0 \uac00\uae09\uc801 \uc774\ub7f0 \uc2dd\uc758 \uc77c\ubd80 function \uc5d0\uc11c\ub9cc\uc758 \uc0ac\uc6a9\uc740 \uc9c0\uc591\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n<p>\ubb3c\ub860 \ucd5c\uadfc\uc5d0\ub294 ESLint \ub4f1\uc774 \uc560\ub9e4\ud55c \uc624\ub958\ub294 \ub2e4 \uc7a1\uc544\uc8fc\uae30 \ub54c\ubb38\uc5d0 use strict\uc758 \uc5ed\ud560\uc740 \ub2e4\uc18c \uc904\uae34 \ud588\uc73c\ub098 \ub9cc\uc57d \uc880 \ub354 \ud0c0\uc774\ud2b8\ud55c \uccb4\ud06c\uac00 \ud544\uc694\ud55c \uacbd\uc6b0\uc5d0\ub294 \uc2a4\ud06c\ub9bd\ud2b8 \ud30c\uc77c \ucd5c\uc0c1\uc704\uc5d0\uc11c use strict \uc0ac\uc6a9\uc740 \uc694\uae34\ud560 \uac83\uc73c\ub85c \ubcf4\uc785\ub2c8\ub2e4.<\/p>\n<p>\uc774\uc0c1\uc73c\ub85c \uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 use strict \uc0ac\uc6a9 \uc774\uc720\uc5d0 \ub300\ud574\uc11c \uc54c\uc544\ubcf4\uc558\uc2b5\ub2c8\ub2e4. \uc880 \ub354 \uc26c\uc6b4 \uc608\uc81c\ub85c \ud655\uc778\ud558\uace0 \ud560 \ub54c\uc5d0\ub294 <a href=\"https:\/\/www.w3schools.com\/js\/js_strict.asp\" target=\"_blank\" rel=\"noopener\">w3school\uc758 \uc608\uc81c<\/a>\ub85c \ud655\uc778\ud574 \ubcf4\uc2dc\uae30 \ubc14\ub78d\ub2c8\ub2e4.<a href=\"https:\/\/www.w3schools.com\/js\/js_strict.asp\"><\/a><\/p>\n<p>\ucc38\uace0\ub85c, sapui5\uc5d0\uc11c\ub294 \uac01 js \ud30c\uc77c\uc758 define \ub0b4\uc5d0 return \ud558\ub294 \ud568\uc218 \ub0b4\uc5d0\uc11c use strict \ubaa8\ub4dc\uac00 \uc0ac\uc6a9\ub41c \uac83\uc744 <a href=\"https:\/\/sap-learn-more.com\/sapui5-require-js%EC%9D%98-%EC%9D%B4%ED%95%B4-define-require\/\" target=\"_blank\" rel=\"noopener\">\uc774 \ubb38\uc11c<\/a>\ub97c \ud1b5\ud574 \ud655\uc778 \ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<a href=\"https:\/\/sap-learn-more.com\/sapui5-require-js%EC%9D%98-%EC%9D%B4%ED%95%B4-define-require\/\"><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 use strict \ub294, js \ud30c\uc77c\uc744 \ubcf4\ub2e4\ubcf4\uba74 \uc8fc\uc11d\uc744 \uc81c\uc678\ud55c \uac00\uc7a5 \ud30c\uc77c\uc758 \uc717\ucabd\uc5d0 &#8216;use strict&#8217; \ub77c\ub294 \ucf54\ub4dc \ud615\ud0dc\ub85c \uc0ac\uc6a9\ud569\ub2c8\ub2e4. use strict \ub294 \uc5c4\uaca9 \ubaa8\ub4dc\ub77c\uace0\ub3c4 \ud558\uba70, \ud30c\uc77c \uc804\uccb4\uc5d0 \uc801\uc6a9\ud560 \uc218\ub3c4, \ud639\uc740 \ud568\uc218 \ub2e8\uc704\ub85c\ub3c4 \uc801\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub530\ub77c\uc11c, \uc624\ud508\uc18c\uc2a4\ub098 \uc720\uc9c0\ubcf4\uc218 \ud558\ub294 \uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 \ucf54\ub4dc\uc5d0 use strict\uac00 \ubcf4\uc774\uba74 \uc624\ud574\uc758 \uc18c\uc9c0\uac00 \uc0dd\uae38 \uc218 \uc788\ub294 \uc560\ub9e4\ud55c \ucf54\ub4dc\ub294 \uc0ac\uc6a9\ud558\uc9c0 \uc54a\ub294 \uac83\uc774 \uc88b\uc2b5\ub2c8\ub2e4. &nbsp; &#8230; <a title=\"\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 use strict \uc0ac\uc6a9 \uc774\uc720\" class=\"read-more\" href=\"https:\/\/sap-learn-more.com\/%ec%9e%90%eb%b0%94%ec%8a%a4%ed%81%ac%eb%a6%bd%ed%8a%b8-use-strict-%ec%82%ac%ec%9a%a9-%ec%9d%b4%ec%9c%a0\/\" aria-label=\"Read more about \uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 use strict \uc0ac\uc6a9 \uc774\uc720\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35],"tags":[39,59,99,54],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 use strict \uc0ac\uc6a9 \uc774\uc720 - SAP Space<\/title>\n<meta name=\"description\" content=\"\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 use strict \ub294, js \ud30c\uc77c\uc744 \ubcf4\ub2e4\ubcf4\uba74 \uc8fc\uc11d\uc744 \uc81c\uc678\ud55c \uac00\uc7a5 \ud30c\uc77c\uc758 \uc717\ucabd\uc5d0 &#039;use strict&#039; \ub77c\ub294 \ucf54\ub4dc \ud615\ud0dc\ub85c \uc0ac\uc6a9\ud558\uba70, \uc624\ud574\uc758 \uc18c\uc9c0\uac00 \uc0dd\uae38 \uc218 \uc788\ub294 \uc560\ub9e4\ud55c \ucf54\ub4dc\uc758 \uc0ac\uc6a9\uc744 \uccb4\ud06c, \uc880 \ub354 \uc548\uc804\ud558\uace0 \uc815\ud655\ud55c \ucf54\ub4dc \uc791\uc131\uc774 \uac00\ub2a5\ud569\ub2c8\ub2e4.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/sap-learn-more.com\/\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8-use-strict-\uc0ac\uc6a9-\uc774\uc720\/\" \/>\n<meta property=\"og:locale\" content=\"ko_KR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 use strict \uc0ac\uc6a9 \uc774\uc720 - SAP Space\" \/>\n<meta property=\"og:description\" content=\"\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 use strict \ub294, js \ud30c\uc77c\uc744 \ubcf4\ub2e4\ubcf4\uba74 \uc8fc\uc11d\uc744 \uc81c\uc678\ud55c \uac00\uc7a5 \ud30c\uc77c\uc758 \uc717\ucabd\uc5d0 &#039;use strict&#039; \ub77c\ub294 \ucf54\ub4dc \ud615\ud0dc\ub85c \uc0ac\uc6a9\ud558\uba70, \uc624\ud574\uc758 \uc18c\uc9c0\uac00 \uc0dd\uae38 \uc218 \uc788\ub294 \uc560\ub9e4\ud55c \ucf54\ub4dc\uc758 \uc0ac\uc6a9\uc744 \uccb4\ud06c, \uc880 \ub354 \uc548\uc804\ud558\uace0 \uc815\ud655\ud55c \ucf54\ub4dc \uc791\uc131\uc774 \uac00\ub2a5\ud569\ub2c8\ub2e4.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/sap-learn-more.com\/\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8-use-strict-\uc0ac\uc6a9-\uc774\uc720\/\" \/>\n<meta property=\"og:site_name\" content=\"SAP Space\" \/>\n<meta property=\"article:published_time\" content=\"2022-03-30T02:05:40+00:00\" \/>\n<meta name=\"author\" content=\"user\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"user\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1\ubd84\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/sap-learn-more.com\/%ec%9e%90%eb%b0%94%ec%8a%a4%ed%81%ac%eb%a6%bd%ed%8a%b8-use-strict-%ec%82%ac%ec%9a%a9-%ec%9d%b4%ec%9c%a0\/\",\"url\":\"https:\/\/sap-learn-more.com\/%ec%9e%90%eb%b0%94%ec%8a%a4%ed%81%ac%eb%a6%bd%ed%8a%b8-use-strict-%ec%82%ac%ec%9a%a9-%ec%9d%b4%ec%9c%a0\/\",\"name\":\"\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 use strict \uc0ac\uc6a9 \uc774\uc720 - SAP Space\",\"isPartOf\":{\"@id\":\"https:\/\/sap-learn-more.com\/#website\"},\"datePublished\":\"2022-03-30T02:05:40+00:00\",\"dateModified\":\"2022-03-30T02:05:40+00:00\",\"author\":{\"@id\":\"https:\/\/sap-learn-more.com\/#\/schema\/person\/6a9cf36f82ea5867c3f46f766f7d2bfa\"},\"description\":\"\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 use strict \ub294, js \ud30c\uc77c\uc744 \ubcf4\ub2e4\ubcf4\uba74 \uc8fc\uc11d\uc744 \uc81c\uc678\ud55c \uac00\uc7a5 \ud30c\uc77c\uc758 \uc717\ucabd\uc5d0 'use strict' \ub77c\ub294 \ucf54\ub4dc \ud615\ud0dc\ub85c \uc0ac\uc6a9\ud558\uba70, \uc624\ud574\uc758 \uc18c\uc9c0\uac00 \uc0dd\uae38 \uc218 \uc788\ub294 \uc560\ub9e4\ud55c \ucf54\ub4dc\uc758 \uc0ac\uc6a9\uc744 \uccb4\ud06c, \uc880 \ub354 \uc548\uc804\ud558\uace0 \uc815\ud655\ud55c \ucf54\ub4dc \uc791\uc131\uc774 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