{"id":321,"date":"2022-03-14T10:54:57","date_gmt":"2022-03-14T10:54:57","guid":{"rendered":"https:\/\/sap-learn-more.com\/?p=321"},"modified":"2022-03-14T11:55:16","modified_gmt":"2022-03-14T11:55:16","slug":"%ec%9e%90%eb%b0%94%ec%8a%a4%ed%81%ac%eb%a6%bd%ed%8a%b8-undefined-%ec%b2%b4%ed%81%ac-%eb%b0%a9%eb%b2%95-null%ea%b3%bc%ec%9d%98-%ec%b0%a8%ec%9d%b4-for-sapui5","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-undefined-%ec%b2%b4%ed%81%ac-%eb%b0%a9%eb%b2%95-null%ea%b3%bc%ec%9d%98-%ec%b0%a8%ec%9d%b4-for-sapui5\/","title":{"rendered":"\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 undefined \uccb4\ud06c \ubc29\ubc95 &#8211; null\uacfc\uc758 \ucc28\uc774 for SAPUI5"},"content":{"rendered":"<p>\ucc98\uc74c \uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8\ub85c \uc870\uac74\ubb38 \ub4f1\uc744 \uc791\uc131\ud558\ub2e4 \ub9c8\uc8fc\ud558\uac8c \ub418\ub294 \uc624\ub958 \uc911 \ud558\ub098\ub294 \uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 undefined \uccb4\ud06c \ubd80\ubd84\uc785\ub2c8\ub2e4.<\/p>\n<p>\uc885\uc885 \ud2b9\uc815 \uac12\uc744 \uc77d\uac70\ub098 \ube44\uad50\ud558\uc5ec \ucc98\ub9ac\ub97c \ubd84\uae30\ud558\uace0\uc790 \ud560 \ub54c undefined \uc624\ub958\uac00 \ubc1c\uc0dd\ud558\uba70 \ub354 \uc774\uc0c1 \uc9c4\ud589\uc774 \ub418\uc9c0 \uc54a\ub294 \uac83\uc778\ub370\uc694, \uc774\ub7f0 undefined \uc790\ub8cc\ud615\uc758 \uccb4\ud06c\uc5d0 \ub300\ud574\uc11c \uc54c\uc544\ubcf4\ub3c4\ub85d \ud558\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n\n<h2>\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8\uc5d0\uc11c\ub294 undefined\ub3c4 \uc790\ub8cc\ud615<\/h2>\n<p>\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8\ub294 \ud2b9\uc774\ud558\uac8c\ub3c4 \uac12\uc744 \ud55c\ubc88\ub3c4 \ud560\ub2f9\ud55c \uc801\uc774 \uc5c6\uac70\ub098, \uc0dd\uc131\ub418\uc9c0 \uc54a\uc740 \uac1d\uccb4\ub97c \uc811\uadfc\ud560 \ub54c\uc758 return \uac12\uc73c\ub85c \ubcc0\uc218\uc5d0 undefined\ub97c \ud560\ub2f9\ud569\ub2c8\ub2e4. \uc989, \uc544\ubb34 \uac83\ub3c4 \ud560\ub2f9\ub418\uc9c0 \uc54a\uc558\uc74c\uc744 \uc758\ubbf8\ud569\ub2c8\ub2e4.<\/p>\n<p>\uadf8\ub7f0\ub370 \uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8\uc5d0\uc11c\uc758 undefined\ub294 \ub370\uc774\ud130 \ud0c0\uc785\uc778 \ub3d9\uc2dc\uc5d0 \uac12\uc744 \uc758\ubbf8\ud569\ub2c8\ub2e4.(=\uc6d0\uc2dc\uc790\ub8cc\ud615)<\/p>\n<p>\ub530\ub77c\uc11c undefined \uc778\uc9c0 \uc544\ub2cc\uc9c0\ub97c \uccb4\ud06c\ud558\ub824\uba74 \ub2e4\uc74c\uacfc \uac19\uc774 \ub530\uc634\ud45c\uac00 \uc5c6\uc774 \uc218\ud589\ud574\uc57c\ud569\ub2c8\ub2e4.<\/p>\n<div class=\"hcb_wrap\">\n<pre class=\"prism undefined-numbers lang-js\" data-lang=\"JavaScript\"><code>let value;\r\nif ( value === undefined ) {\r\n  console.log( \"\uc544\ubb34\uac83\ub3c4 \ud560\ub2f9\ub418\uc9c0 \uc54a\uc558\uc74c\" )\r\n}\r\n<\/code><\/pre>\n<\/div>\n<p><img decoding=\"async\" src=\"https:\/\/sap-learn-more.com\/wp-content\/uploads\/2022\/03\/undefined\ub294-\ub530\uc634\ud45c\ub97c-\ube7c\uace0-\ube44\uad50\ud574\uc57c-\ud55c\ub2e4.png\" alt=\"undefined\ub294 \ub530\uc634\ud45c\ub97c \ube7c\uace0 \ube44\uad50\ud574\uc57c \ud55c\ub2e4.\" class=\"aligncenter\" \/><\/p>\n<p>\ub9cc\uc57d \ub530\uc634\ud45c\ub97c \uc0ac\uc6a9\ud558\uace0\uc790 \ud558\uba74 typeof\ub85c \uc790\ub8cc\ud615\uae4c\uc9c0 \ud655\uc778\uc744 \ud574\uc11c \ub2e4\uc74c\uacfc \uac19\uc774 \ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n<div class=\"hcb_wrap\">\n<pre class=\"prism undefined-numbers lang-js\" data-lang=\"JavaScript\"><code>let value;\r\nif ( typeof( value ) === \"undefined\" ) {\r\n  console.log( \"\uc544\ubb34\uac83\ub3c4 \ud560\ub2f9\ub418\uc9c0 \uc54a\uc558\uc74c\" )\r\n}\r\n<\/code><\/pre>\n<\/div>\n<h2>\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 undefined \uc640 null \uc758 \ucc28\uc774\uc810\uc740<\/h2>\n<p>undefined\uac00 \uc640 null\uc758 \ucc28\uc774\ub294, null\uc758 \uacbd\uc6b0 \ubcc0\uc218\ub97c \uc120\uc5b8\ud558\uace0 null\uc774\ub77c\ub294 \uac12\uc744 \uba85\uc2dc\uc801\uc73c\ub85c \ub123\uc5b4\uc8fc\uc5c8\uc74c\uc744 \uc774\uc57c\uae30 \ud558\uace0, undefined\uc758 \uacbd\uc6b0\ub294 \ubcc0\uc218\ub97c \uc120\uc5b8\ud588\uc9c0\ub9cc \uc544\ubb34\uac83\ub3c4 \ub123\uc9c0 \uc54a\uc740 \uc0c1\ud0dc\uc785\ub2c8\ub2e4.<\/p>\n<div class=\"hcb_wrap\">\n<pre class=\"prism undefined-numbers lang-js\" data-lang=\"JavaScript\"><code>let value; \/\/ undefined\r\nconsole.log( value );\r\nvalue = null; \/\/ null\r\nconsole.log( value );\r\n<\/code><\/pre>\n<\/div>\n<p><img decoding=\"async\" src=\"https:\/\/sap-learn-more.com\/wp-content\/uploads\/2022\/03\/null\uc758-\uacbd\uc6b0-null\uc744-\uba85\uc2dc\uc801\uc73c\ub85c-\ub123\uc5b4\uc900-\uc0c1\ud0dc.png\" alt=\"null\uc758 \uacbd\uc6b0 null\uc744 \uba85\uc2dc\uc801\uc73c\ub85c \ub123\uc5b4\uc900 \uc0c1\ud0dc\" class=\"aligncenter\" \/><\/p>\n<p>\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 undefined\uc5d0 \ub300\ud574 \uc880 \ub354 \uc0c1\uc138\ud558\uac8c \uc54c\uace0\uc790 \ud55c\ub2e4\uba74 \ubaa8\uc9c8\ub77c (<a href=\"https:\/\/developer.mozilla.org\/ko\/docs\/Web\/JavaScript\/Reference\/Global_Objects\/undefined\" target=\"_blank\" rel=\"noopener\">\uc774\uae00)<\/a>\uc744 \ud655\uc778\ud574 \ubcf4\uc2dc\uae30 \ubc14\ub78d\ub2c8\ub2e4.<\/p>\n<p>&nbsp;<\/p>\n<h2>\ud568\uaed8 \ubcf4\uba74 \uc88b\uc740 \uae00<\/h2>\n<p><a href=\"https:\/\/sap-learn-more.com\/%ec%9e%90%eb%b0%94%ec%8a%a4%ed%81%ac%eb%a6%bd%ed%8a%b8-%eb%b0%98%eb%b3%b5%eb%ac%b8-for-of-for-in-for-%ea%b8%b0%ec%b4%88-for-sapui5\/\" target=\"_blank\" rel=\"noopener\">\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 \ubc18\ubcf5\ubb38 for of \/ for in \/ for \uae30\ucd08 for SAPUI5<\/a><\/p>\n<p><a href=\"https:\/\/sap-learn-more.com\/%ec%9e%90%eb%b0%94%ec%8a%a4%ed%81%ac%eb%a6%bd%ed%8a%b8-%eb%b0%b0%ec%97%b4-%eb%a9%94%ec%86%8c%eb%93%9c-%ea%b8%b0%ec%b4%88-for-sapui5-%ec%b4%88%eb%b3%b4%ec%9e%90\/\" target=\"_blank\" rel=\"noopener\">\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 \ubc30\uc5f4 \uba54\uc18c\ub4dc \uae30\ucd08 for SAPUI5 \ucd08\ubcf4\uc790<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\ucc98\uc74c \uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8\ub85c \uc870\uac74\ubb38 \ub4f1\uc744 \uc791\uc131\ud558\ub2e4 \ub9c8\uc8fc\ud558\uac8c \ub418\ub294 \uc624\ub958 \uc911 \ud558\ub098\ub294 \uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 undefined \uccb4\ud06c \ubd80\ubd84\uc785\ub2c8\ub2e4. \uc885\uc885 \ud2b9\uc815 \uac12\uc744 \uc77d\uac70\ub098 \ube44\uad50\ud558\uc5ec \ucc98\ub9ac\ub97c \ubd84\uae30\ud558\uace0\uc790 \ud560 \ub54c undefined \uc624\ub958\uac00 \ubc1c\uc0dd\ud558\uba70 \ub354 \uc774\uc0c1 \uc9c4\ud589\uc774 \ub418\uc9c0 \uc54a\ub294 \uac83\uc778\ub370\uc694, \uc774\ub7f0 undefined \uc790\ub8cc\ud615\uc758 \uccb4\ud06c\uc5d0 \ub300\ud574\uc11c \uc54c\uc544\ubcf4\ub3c4\ub85d \ud558\uaca0\uc2b5\ub2c8\ub2e4. \uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8\uc5d0\uc11c\ub294 undefined\ub3c4 \uc790\ub8cc\ud615 \uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8\ub294 \ud2b9\uc774\ud558\uac8c\ub3c4 \uac12\uc744 \ud55c\ubc88\ub3c4 \ud560\ub2f9\ud55c \uc801\uc774 \uc5c6\uac70\ub098, \uc0dd\uc131\ub418\uc9c0 \uc54a\uc740 \uac1d\uccb4\ub97c \uc811\uadfc\ud560 \ub54c\uc758 return &#8230; <a title=\"\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 undefined \uccb4\ud06c \ubc29\ubc95 &#8211; null\uacfc\uc758 \ucc28\uc774 for SAPUI5\" 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-undefined-%ec%b2%b4%ed%81%ac-%eb%b0%a9%eb%b2%95-null%ea%b3%bc%ec%9d%98-%ec%b0%a8%ec%9d%b4-for-sapui5\/\" aria-label=\"Read more about \uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 undefined \uccb4\ud06c \ubc29\ubc95 &#8211; null\uacfc\uc758 \ucc28\uc774 for SAPUI5\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":325,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35],"tags":[52,51],"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 undefined \uccb4\ud06c \ubc29\ubc95 - null\uacfc\uc758 \ucc28\uc774 for SAPUI5 - SAP Space<\/title>\n<meta name=\"description\" content=\"\uc885\uc885 \ud2b9\uc815 \uac12\uc744 \uc77d\uac70\ub098 \ube44\uad50\ud558\uc5ec \ucc98\ub9ac\ud558\uace0\uc790 \ud560 \ub54c undefined \uc624\ub958\uac00 \ubc1c\uc0dd\ud558\uba70 \uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 undefined \uccb4\ud06c \uac00 \ud544\uc694\ud569\ub2c8\ub2e4. \uac12\uc744 \ud55c\ubc88\ub3c4 \ud560\ub2f9\ud55c \uc801\uc774 \uc5c6\uac70\ub098, \uc0dd\uc131\ub418\uc9c0 \uc54a\uc740 \uac1d\uccb4\uc811\uadfc\uc2dc return \uac12\uc73c\ub85c 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\ud55c\ubc88\ub3c4 \ud560\ub2f9\ud55c \uc801\uc774 \uc5c6\uac70\ub098, \uc0dd\uc131\ub418\uc9c0 \uc54a\uc740 \uac1d\uccb4\uc811\uadfc\uc2dc return \uac12\uc73c\ub85c \ubcc0\uc218\uc5d0 undefined\ub97c \ud560\ub2f9\ud569\ub2c8\ub2e4\" \/>\n<meta property=\"og:url\" content=\"https:\/\/sap-learn-more.com\/\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8-undefined-\uccb4\ud06c-\ubc29\ubc95-null\uacfc\uc758-\ucc28\uc774-for-sapui5\/\" \/>\n<meta property=\"og:site_name\" content=\"SAP Space\" \/>\n<meta property=\"article:published_time\" content=\"2022-03-14T10:54:57+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-03-14T11:55:16+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/sap-learn-more.com\/wp-content\/uploads\/2022\/03\/null\uc758-\uacbd\uc6b0-null\uc744-\uba85\uc2dc\uc801\uc73c\ub85c-\ub123\uc5b4\uc900-\uc0c1\ud0dc.png\" \/>\n\t<meta property=\"og:image:width\" content=\"720\" \/>\n\t<meta property=\"og:image:height\" content=\"151\" \/>\n\t<meta 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