{"id":1254,"date":"2023-02-23T20:28:14","date_gmt":"2023-02-23T11:28:14","guid":{"rendered":"http:\/\/attacktube.com\/?p=1254"},"modified":"2023-02-24T06:59:53","modified_gmt":"2023-02-23T21:59:53","slug":"%e3%80%90javascript%e3%80%91%e3%82%af%e3%83%ad%e3%83%bc%e3%82%b8%e3%83%a3closure","status":"publish","type":"post","link":"http:\/\/attacktube.com\/?p=1254","title":{"rendered":"\u3010JavaScript\u3011\u30af\u30ed\u30fc\u30b8\u30e3(closure)"},"content":{"rendered":"\n<p>\u30af\u30ed\u30fc\u30b8\u30e3(closure)\u306b\u3064\u3044\u3066\u89e3\u8aac\u3059\u308b\u3002<\/p>\n\n\n\n<p>\u30af\u30ed\u30fc\u30b8\u30e3\u3092\u7c21\u5358\u306b\u8aac\u660e\u3059\u308b\u3068\u300c\u95a2\u6570\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e1\u3064\u300d\u3067\u3042\u308b\u3002<br>\u305f\u3060\u3057\u3001\u30af\u30ed\u30fc\u30b8\u30e3\u306f\u5358\u7d14\u306a\u95a2\u6570\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u306f\u306a\u304f\u3001\u300c\u74b0\u5883\u4ed8\u304d\u300d\u306e\u95a2\u6570\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u3042\u308b\u3002<\/p>\n\n\n\n<p>JavaScript\u306e\u95a2\u6570\u306f\u3001\u305d\u306e\u95a2\u6570\u304c\u4f5c\u6210\u3055\u308c\u305f\u3068\u304d\u306e\u300c\u74b0\u5883\u300d\u3092\u4fdd\u6301\u3059\u308b\u3088\u3046\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u308b\u3002<br>\u30af\u30ed\u30fc\u30b8\u30e3\u306f\u95a2\u6570\u306e\u4e2d\u306b\u95a2\u6570\u3092\u5b9a\u7fa9\u3059\u308b\u3002\u3053\u306e\u3068\u304d\u3001\u5185\u5074\u306e\u95a2\u6570\u304c\u5916\u5074\u306e\u95a2\u6570\u3067\u5b9a\u7fa9\u3057\u305f\u5909\u6570\u3084\u30d1\u30e9\u30e1\u30fc\u30bf(this\u3068argumets\u3092\u9664\u304f)\u306b\u30a2\u30af\u30bb\u30b9\u53ef\u80fd\u3067\u3042\u308b\u3002<br>\u3053\u306e\u5185\u5074\u306e\u95a2\u6570\u306f\u3001\u5916\u5074\u306e\u95a2\u6570\u3067\u5b9a\u7fa9\u3057\u305f\u5909\u6570\u3084\u30d1\u30e9\u30e1\u30fc\u30bf(this\u3068argumets\u3092\u9664\u304f)\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u74b0\u5883\u4ed8\u304d\u306e\u95a2\u6570\u30aa\u30d6\u30b8\u30a7\u30af\u30c8(\u30af\u30ed\u30fc\u30b8\u30e3)\u3067\u3042\u308b\u3002<br><br>\u3064\u307e\u308a\u3001\u95a2\u6570\u3092\u5b9a\u7fa9\u3057\u3066\u3001\u305d\u306e\u95a2\u6570\u306e\u4e2d\u306b\u95a2\u6570\u3092\u5b9a\u7fa9\u3057\u3066\u3042\u3063\u305f\u3089\u30af\u30ed\u30fc\u30b8\u30e3\u3067\u3042\u308b\u3002<\/p>\n\n\n\n<p>\u6b21\u306b\u30af\u30ed\u30fc\u30b8\u30e3\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u793a\u3059\u3002<br>closureTest\u95a2\u6570\u306e\u4e2d\u306bret\u95a2\u6570\u3092\u5b9a\u7fa9\u3057\u3066\u3042\u308b\u3002<br>\u5916\u5074\u306e\u95a2\u6570\u306fclosureTest\u95a2\u6570\u3067\u3042\u308a\u3001\u5185\u5074\u306e\u95a2\u6570\u306fret\u95a2\u6570\u3067\u3042\u308b\u3002<\/p>\n\n\n\n<p>closureTest\u3092\u547c\u3073\u51fa\u3057\u3066counter\u95a2\u6570\u3092\u751f\u6210\u3059\u308b\u3002<br>counter\u95a2\u6570\u3092\u5b9f\u884c\u3059\u308b\u305f\u3073\u306b10\u3065\u3064\u5024\u304c\u5897\u3048\u3066\u3044\u304f\u3002<\/p>\n\n\n\n<p>\u65b0\u3057\u304fclosureTest\u3092\u547c\u3073\u51fa\u3059\u3068\u3001\u305d\u3053\u3067\u751f\u6210\u3055\u308c\u305f\u95a2\u6570\u306f\u5168\u304f\u5225\u306e\u74b0\u5883\u3092\u4fdd\u6301\u3059\u308b\u3053\u3068\u306b\u306a\u308b\u3002<br>counter\u95a2\u6570\u306e\u74b0\u5883\u3068counter2\u95a2\u6570\u306f\u7570\u306a\u308b\u74b0\u5883\u3067\u3042\u308b\u3002<\/p>\n\n\n\n<!--more-->\n\n\n\n<pre><code>\nlet closureTest = function() {\n    let ctr = 0;\n    let ret = function() {\n        ctr += 10;\n        console.log(ctr);\n    }\n    return ret;\n};\n\nlet counter = closureTest();\n\ncounter(); \/\/10\ncounter(); \/\/20\ncounter(); \/\/30\n\nlet counter2 = closureTest();\n\ncounter2(); \/\/10\n\ncounter(); \/\/40\n\n<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u8a18\u4e8b\u306e\u7d9a\u304d<br><a href=\"http:\/\/attacktube.com\/?p=1265\">\u3010JavaScript\u3011\u30af\u30ed\u30fc\u30b8\u30e3(closure)\u3068onclick\u30e1\u30bd\u30c3\u30c9 (attacktube.com)<\/a><br><br>\u53c2\u8003<br> <a rel=\"nofollow sponsored noopener\" style=\"word-wrap:break-word;\" href=\"https:\/\/hb.afl.rakuten.co.jp\/ichiba\/298338d3.714ded4a.298338d4.abf99259\/?pc=https%3A%2F%2Fitem.rakuten.co.jp%2Fbook%2F5940391%2F&amp;link_type=text&amp;ut=eyJwYWdlIjoiaXRlbSIsInR5cGUiOiJ0ZXh0Iiwic2l6ZSI6IjI0MHgyNDAiLCJuYW0iOjEsIm5hbXAiOiJyaWdodCIsImNvbSI6MSwiY29tcCI6ImRvd24iLCJwcmljZSI6MSwiYm9yIjoxLCJjb2wiOjEsImJidG4iOjEsInByb2QiOjAsImFtcCI6ZmFsc2V9\" target=\"_blank\">JavaScript\uff1athe\u3000good\u3000parts \u300c\u826f\u3044\u30d1\u30fc\u30c4\u300d\u306b\u3088\u308b\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9 [ \u30c0\u30b0\u30e9\u30b9\u30fb\u30af\u30ed\u30d5\u30a9\u30fc\u30c9 ]<\/a> ExternalLink P43\uff5e46<br>\u65e5\u7d4c\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2 2014\u5e7410\u6708\u53f7(\u65e5\u7d4cBP\u793e) P132\uff5e137<\/p>\n\n\n\n<br>\n<script async=\"\" src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-3461056110605997\" crossorigin=\"anonymous\"><\/script>\n<ins class=\"adsbygoogle\" style=\"display:block; text-align:center;\" data-ad-layout=\"in-article\" data-ad-format=\"fluid\" data-ad-client=\"ca-pub-3461056110605997\" data-ad-slot=\"3137443461\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script>\n<br>\n\n\n\n<script type=\"text\/javascript\">\njQuery(function($){\n$(\".jp-video\").hide();\n});\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>\u30af\u30ed\u30fc\u30b8\u30e3(closure)\u306b\u3064\u3044\u3066\u89e3\u8aac\u3059\u308b\u3002 \u30af\u30ed\u30fc\u30b8\u30e3\u3092\u7c21\u5358\u306b\u8aac\u660e\u3059\u308b\u3068\u300c\u95a2\u6570\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e1\u3064\u300d\u3067\u3042\u308b\u3002\u305f\u3060\u3057\u3001\u30af\u30ed\u30fc\u30b8\u30e3\u306f\u5358\u7d14\u306a\u95a2\u6570\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u306f\u306a\u304f\u3001\u300c\u74b0\u5883\u4ed8\u304d\u300d\u306e\u95a2\u6570\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u3042\u308b\u3002 JavaScrip [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[3],"tags":[],"class_list":["post-1254","post","type-post","status-publish","format-standard","hentry","category-javascript"],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"http:\/\/attacktube.com\/index.php?rest_route=\/wp\/v2\/posts\/1254","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/attacktube.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/attacktube.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/attacktube.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/attacktube.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1254"}],"version-history":[{"count":8,"href":"http:\/\/attacktube.com\/index.php?rest_route=\/wp\/v2\/posts\/1254\/revisions"}],"predecessor-version":[{"id":1288,"href":"http:\/\/attacktube.com\/index.php?rest_route=\/wp\/v2\/posts\/1254\/revisions\/1288"}],"wp:attachment":[{"href":"http:\/\/attacktube.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1254"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/attacktube.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1254"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/attacktube.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1254"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}