{"id":387,"date":"2026-06-26T13:35:02","date_gmt":"2026-06-26T13:35:02","guid":{"rendered":"https:\/\/aabbee.cafe24.com\/?p=387"},"modified":"2026-06-26T14:02:46","modified_gmt":"2026-06-26T14:02:46","slug":"3-%ec%8b%a4%ed%96%89%ec%bb%a8%ed%85%8d%ec%8a%a4%ed%8a%b8%ec%99%80-%ec%8a%a4%ec%bd%94%ed%94%84","status":"publish","type":"post","link":"https:\/\/coalacoding.com\/?p=387","title":{"rendered":"3-\uc2e4\ud589\ucee8\ud14d\uc2a4\ud2b8\uc640-\uc2a4\ucf54\ud504"},"content":{"rendered":"

<\/Accordion><\/p>\n

\n
\n

ECMAScript\ub294 4\uac00\uc9c0\ub85c \uc18c\uc2a4\ucf54\ub4dc\ub97c \uad6c\ubd84\ud55c\ub2e4. 4\uac00\uc9c0 \ud0c0\uc785\uc758 \uc18c\uc2a4\ucf54\ub4dc\ub294 \uc2e4\ud589 \ucee8\ud14d\uc2a4\ud2b8\ub97c \uc0dd\uc131\ud55c\ub2e4.<\/p>\n<\/blockquote>\n

    \n
  1. \uc804\uc5ed\ucf54\ub4dc – \uc804\uc5ed\uc5d0 \uc874\uc7ac\ud558\ub294 \uc18c\uc2a4\ucf54\ub4dc<\/li>\n
  2. \ud568\uc218\ucf54\ub4dc – \ud568\uc218 \ub0b4\uc758 \ucf54\ub4dc<\/li>\n
  3. eval \ucf54\ub4dc – eval \ud568\uc218\uc758 \uc778\uc218\ub85c \uc804\ub2ec\ub41c \uc2e4\ud589 \ucf54\ub4dc<\/li>\n
  4. \ubaa8\ub4c8\ucf54\ub4dc – \ubaa8\ub4c8\ub0b4\uc758 \ucf54\ub4dc
    \n \uc704 4\uac00\uc9c0 \ud0c0\uc785\ubcc4 \uc2e4\ud589\ucee8\ud14d\uc2a4\ud2b8\uc758 \uc0dd\uc131\uacfc\uc815\uacfc \uad00\ub9ac\ubc29\ubc95\uc758 \ucc28\uc774\uac00 \uc788\uc73c\ub098 1\uacfc 2\uc758 \uc0ac\uc6a9\ube48\ub3c4\uac00 \ub192\uc73c\ubbc0\ub85c \uc774\uac83\ub9cc \ub2e4\ub8e8\ub3c4\ub85d \ud55c\ub2e4.<\/li>\n<\/ol>\n
    \n

    1-\uc2e4\ud589\ucee8\ud14d\uc2a4\ud2b8(Excution Context)<\/h2>\n

    1-1-\uc815\uc758<\/h3>\n

    \uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 \ucf54\ub4dc\uac00 \uc2e4\ud589\ub418\ub294 \uacf5\uac04(\ud658\uacbd)<\/p>\n

    1-2-\uc885\ub958<\/h3>\n

    ECMA\uc0ac\uc591\uc740(ECMAscript \ud45c\uc900) \uc18c\uc2a4\ucf54\ub4dc\ub97c 4\uac00\uc9c0\ub85c \uad6c\ubd84\ud55c\ub2e4. \uadf8\ub9ac\uace0 \uc774 4\uc885\ub958\uc758 \uc18c\uc2a4\ucf54\ub4dc\ub294 \uc2e4\ud589\ucf58\ud14d\uc2a4\ud2b8\ub97c \uc0dd\uc131\ud55c\ub2e4.<\/p>\n

      \n
    1. \uc804\uc5ed\ucf54\ub4dc<\/li>\n
    2. \ud568\uc218\ucf54\ub4dc<\/li>\n
    3. eval \ucf54\ub4dc<\/li>\n
    4. \ubaa8\ub4c8\ucf54\ub4dc
      \n\uadf8\ub7ec\ub098 \uc774\ubc88\uc5d0\ub294 \uc804\uc5ed\ucf54\ub4dc\uc640 \ud568\uc218\ucf54\ub4dc\uc758 \uc2e4\ud589 \ucee8\ud14d\uc2a4\ud2b8<\/strong> \ub9cc\uc744 \ub2e4\ub8ec\ub2e4.<\/li>\n<\/ol>\n
      \n

      2-\uc2a4\ucf54\ud504<\/a><\/h2>\n

      2-1-\uc815\uc758<\/h3>\n

      \uc2dd\ubcc4\uc790\ub97c \ucc38\uc870\ud560\uc218 \uc788\ub294 \ubc94\uc704<\/p>\n

      2-1-\uc885\ub958<\/h3>\n
        \n
      1. \uc804\uc5ed \uc2a4\ucf54\ud504<\/li>\n
      2. \uc9c0\uc5ed \uc2a4\ucf54\ud504<\/li>\n<\/ol>\n
        \n

        3-\ud638\uc774\uc2a4\ud305<\/h2>\n

        3-1-\uc815\uc758<\/h3>\n

        \ucf54\ub4dc\ub97c \uc120\uc5b8\uacfc \ud560\ub2f9\uc73c\ub85c \ubd84\ub9ac\ud558\uace0 \uc120\uc5b8\ubd80\ubd84\uc744 \ucd5c\uc0c1\uc704\ub85c \ub04c\uc5b4\uc62c\ub9ac\ub294\uac83<\/p>\n

        3-2-\uc21c\uc11c\ub3c4<\/h3>\n

        \uc544\ub798 \uadf8\ub9bc\uc5d0 \ud45c\uc2dc\ub41c \ub2e8\uacc4\uc5d0\uc11c \ubc1c\uc0dd\ud55c\ub2e4.<\/p>\n

        \"\"<\/p>\n

        3-3-\uc2e4\uc2b5<\/h3>\n

        3-3-1-\uc120\uc5b8\uc801 \ud568\uc218<\/h4>\n
        abc()\n\/\/\ud568\uc218'\uc120\uc5b8\ubb38'\nfunction abc(){ console.log('bb')}\n<\/code><\/pre>\n
        \uc704\uc758 \ud568\uc218\ub294 \uc120\uc5b8\ubb38<\/strong> <\/strong>\uc73c\ub85c \uc0dd\uc131 \ub418\uc5c8\uc73c\ubbc0\ub85c  <\/strong>\ud638\uc774\uc2a4\ud305\uc774 \ubc1c\uc0dd\ud558\uc5ec \ucd5c\uc0c1\uc704\ub85c \ub04c\uc5b4\uc62c\ub824\uc9c4\ub2e4
        \n\ud568\uc218\uc758 \uc815\uc758\uc804 \ud638\ucd9c\uc774 \ub418\uc5c8\uc74c\uc5d0\ub3c4 \uac12\uc774 \ucd9c\ub825\ub41c\ub2e4.<\/p>\n
        3-3-2-\ud45c\ud604\uc2dd \ud568\uc218<\/h4>\n
        :2: const, let<\/h4>\n
        df();\nconst fn = function df() { console.log('bb') }\n<\/code><\/pre>\n
        \uc704\uc758 \ud568\uc218\ub294 \uc624\ub958\uac00 \ubc18\ud658\ub41c\ub2e4.
        \ndf \ud568\uc218\ub294 fn \ubcc0\uc218\uc5d0 \ud560\ub2f9 \ub418\uc5c8\uae30 \ub54c\ubb38\uc5d0 \ub354\uc774\uc0c1 df \ub85c \ud638\ucd9c\ud560\uc218 \uc5c6\ub2e4.<\/p>\n
        \"\"<\/p>\n
        \uadf8\ub807\ub2e4\uba74 fn\uc744 \ud638\ucd9c\ud558\ub294 \uac83\uc740 \uac00\ub2a5\ud560\uae4c?<\/p>\n
        **fn();**\n\/\/df();\nconst fn = function df() { console.log('bb') }\n<\/code><\/pre>\n
        \uc774\ubc88\uc5d0\ub3c4 \uc624\ub958\uac00 \ub098\ub294\ub370 \ucf58\uc194 \uc624\ub958 \uba54\uc2dc\uc9c0\uac00 \ub2e4\ub974\ub2e4.
        \n\uc774 \ubd80\ubd84\uc740 \uc2e4\ud589\ucee8\ud14d\uc2a4\ud2b8\ub97c \ud559\uc2b5\ud558\uba74 \uc774\ud574\ud560\uc218 \uc788\ub2e4.
        \n\ubcc0\uc218\uc758 \ud0a4\uc6cc\ub4dc\ub97c const<\/code>, let<\/code> \uc73c\ub85c \uc120\uc5b8\ud558\uba74 \ubaa8\ub450 \uc704\uc640 \uac19\uc740 \uc624\ub958\uba54\uc2dc\uc9c0\uac00 \ud655\uc778\ub41c\ub2e4.<\/p>\n
        :2: var<\/h4>\n
        var \ud0a4\uc6cc\ub4dc\uc5d0 \ud568\uc218\ub97c \ud560\ub2f9\ud558\uba74 \uc5b4\ub5bb\uac8c \ub420\uae4c?<\/p>\n
        fn();\nvar fn = function df() { console.log('bb') }\n<\/code><\/pre>\n
        \uc624\ub958\uba54\uc2dc\uc9c0\uc758 \ub0b4\uc6a9\uc774 \ub2e4\ub974\uac8c \ud655\uc778\ub41c\ub2e4.
        \nfn \uc774\ub77c\ub294 \uc2dd\ubcc4\uc790\ub294 \uc5b4\ub514\uc5d0\ub3c4 \uc120\uc5b8\ub418\uc9c0 \uc54a\uc558\uc74c\uc5d0\ub3c4 \uc65c \ud568\uc218\uac00 \uc544\ub2c8\ub77c\uace0 \ud558\ub294\uac78\uae4c?
        \nvar<\/code> \ud0a4\uc6cc\ub4dc\ub85c \uc120\uc5b8\ub41c \ubcc0\uc218\ub294 \uc544\ub798\uc640 \uac19\uc740 \uc21c\uc11c\ub85c \ud3c9\uac00\ub41c\ub2e4.<\/p>\n
        \"\"<\/p>\n
        19: fn \uc5d0\ub294 undefined \uac00 \ud560\ub2f9\ub418\uc5b4 \ucd08\uae30\ud654\ub41c\ub2e4.
        \n20: fn\uc774 \uc874\uc7ac\ud558\uae34 \ud558\ub098 undefined \uac00 \ud560\ub2f9\ub418\uc5b4 \uc788\uc73c\ubbc0\ub85c \ud568\uc218\uac00 \uc544\ub2c8\ub2e4.
        \n21: fn \uc2dd\ubcc4\uc790\uc5d0 df \ud568\uc218\ub97c \uc7ac\ud560\ub2f9 \ud55c\ub2e4.<\/p>\n
        \n
        4-\uc2e4\ud589\ucee8\ud14d\uc2a4\ud2b8 \uc774\ud574<\/h2>\n
        \uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 \uc5d4\uc9c4\uc774 \uc18c\uc2a4\ucf54\ub4dc\ub97c \ud3c9\uac00\ud558\uace0 \uc2e4\ud589\ud558\ub294 \ub3c5\ub9bd\uc801\uc778 \uacf5\uac04\uc774\ub2e4.
        \n\uc2e4\ud589 \ucee8\ud14d\uc2a4\ud2b8\ub294 \uc815\ud655\ud788 Environment Record<\/strong>, Outer <\/strong>Environment Reference, This Binding\uc73c\ub85c \uad6c\uc131\ub41c\ub2e4. \uadf8\ub7ec\ub098 \uc774\ubc88\uc5d0\ub294 \uc26c\uc6b4 \uc774\ud574\ub97c \uc704\ud574 \ub808\ucf54\ub4dc\uc640 \uc544\uc6b0\ud130\ub9cc \ub2e4\ub8f0\uac83\uc774\ub2e4.<\/p>\n
        4-1-\uad6c\uc131\uc694\uc18c<\/h3>\n\n\n\n\n\n\n\n
        \uc774\ub984<\/th>\n\uc124\uba85<\/th>\n<\/tr>\n<\/thead>\n
        \ub808\ucf54\ub4dc(Environment Record<\/strong><\/strong> )<\/strong><\/td>\n\ubcc0\uc218, \ud568\uc218 \uc120\uc5b8 \ub4f1\uc744 \uc800\uc7a5\ud558\ub294 \uacf5\uac04<\/td>\n<\/tr>\n
        \uc544\uc6b0\ud130 \ud658\uacbd \ucc38\uc870(<\/strong>Outer <\/strong>Environment Reference)<\/strong><\/td>\n\uc678\ubd80 \uc2e4\ud589 \ucee8\ud14d\uc2a4\ud2b8(\uc0c1\uc704 \uc2a4\ucf54\ud504)\ub97c \uac00\ub9ac\ud0a4\ub294 \ucc38\uc870\uac12<\/td>\n<\/tr>\n
        this \ubc14\uc778\ub529<\/strong><\/td>\n\ud574\ub2f9 \ucee8\ud14d\uc2a4\ud2b8\uc5d0\uc11c\uc758 this \uac12<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n