{"id":789,"date":"2023-01-13T15:51:15","date_gmt":"2023-01-13T06:51:15","guid":{"rendered":"https:\/\/blog.dozzing.kr\/?p=789"},"modified":"2025-10-24T11:33:23","modified_gmt":"2025-10-24T02:33:23","slug":"javascript-%ec%9e%90%eb%b0%94%ec%8a%a4%ed%81%ac%eb%a6%bd%ed%8a%b8-%ec%9e%85%eb%ac%b8-1","status":"publish","type":"post","link":"https:\/\/blog.dozzing.kr\/?p=789","title":{"rendered":"[JavaScript] \uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 \uc785\ubb38 1"},"content":{"rendered":"<h2>\ud83d\udcab \uc54c\ub9bc\ucc3d \ub744\uc6b0\uae30, \uc9c0\uc6b0\uae30<\/h2>\n<p class=\"codepen\" data-height=\"300\" data-default-tab=\"html,result\" data-slug-hash=\"MYgVNrW\" data-pen-title=\"\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 \uc785\ubb38\" data-user=\"dozzs\" style=\"height: 300px; box-sizing: border-box; display: flex; align-items: center; justify-content: center; border: 2px solid; margin: 1em 0; padding: 1em;\">\n<span>See the Pen <a href=\"https:\/\/codepen.io\/dozzs\/pen\/MYgVNrW\"><br \/>\n\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 \uc785\ubb38<\/a> by dozzs (<a href=\"https:\/\/codepen.io\/dozzs\">@dozzs<\/a>)<br \/>\non <a href=\"[https:\/\/codepen.io](https:\/\/codepen.io\/)\">CodePen<\/a>.<\/span>\n<\/p>\n<p><script async src=\"https:\/\/public.codepenassets.com\/embed\/index.js\"><\/script><\/p>\n<p><code>document.getElementById().style<\/code>\uc744 \uc774\uc6a9\ud558\uc5ec <code>\ud2b9\uc815 id<\/code>\ub97c \uac00\uc9c4 <code>HTML \ud0dc\uadf8(\uc694\uc18c)<\/code>\uc758 \uc2a4\ud0c0\uc77c\uc744 \ubcc0\uacbd\ud560 \uc218 \uc788\ub2e4.<\/p>\n<p><code>document.getElementById('alert').style.display == 'none'<\/code> : X\ubc84\ud2bc\uc744 \ub20c\ub800\uc744 \ub54c \uc0ac\ub77c\uc9d0 \ucc98\ub9ac<\/p>\n<p><code>document.getElementById(find()).style.display = 'flex'<\/code> : \ub744\uc6b0\uae30 \ubc84\ud2bc\uc744 \ub20c\ub800\uc744 \ub54c \ubcf4\uc774\uac8c \ucc98\ub9ac<\/p>\n<pre><code class=\"language-jsx line-numbers\">function find() {\n        if(document.getElementById('alert').style.display == 'none')\n            return 'alert';\n        else if(document.getElementById('alert1').style.display == 'none')\n            return 'alert1';\n        else if(document.getElementById('alert2').style.display == 'none')\n            return 'alert2';\n        else\n            return '';\n    }\n    if(find() != '')document.getElementById(find()).style.display = 'flex';\n<\/code><\/pre>\n<p>if\ubb38\uc744 \uc774\uc6a9\ud558\uc5ec \uc21c\uc11c\ub300\ub85c \ucf1c\uc9c0\ub3c4\ub85d \ub744\uc6b0\uae30 \ubc84\ud2bc \uc0dd\uc131<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\ud83d\udcab \uc54c\ub9bc\ucc3d \ub744\uc6b0\uae30, \uc9c0\uc6b0\uae30 See the Pen \uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 \uc785\ubb38 by dozzs (@dozzs) on CodePen. document.getElementById().style\uc744 \uc774\uc6a9\ud558\uc5ec \ud2b9\uc815 id\ub97c \uac00\uc9c4 HTML \ud0dc\uadf8(\uc694\uc18c)\uc758 \uc2a4\ud0c0\uc77c\uc744 \ubcc0\uacbd\ud560 \uc218 \uc788\ub2e4. document.getElementById(&#8216;alert&#8217;).style.display == &#8216;none&#8217; 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