{"id":4488,"date":"2016-08-02T10:00:00","date_gmt":"2016-08-02T01:00:00","guid":{"rendered":"http:\/\/inter-arteq.com\/?p=4488"},"modified":"2022-03-14T23:08:50","modified_gmt":"2022-03-14T14:08:50","slug":"detail-of-logical-operation-in-javascript","status":"publish","type":"post","link":"http:\/\/cms.inter-arteq.com\/detail-of-logical-operation-in-javascript\/","title":{"rendered":"[JavaScript] \u8ad6\u7406\u6f14\u7b97\u5b50\u3092\u3082\u3046\u3061\u3087\u3063\u3068\u8abf\u3079\u3066\u307f\u308b"},"content":{"rendered":"\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_69_1 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\"><p class=\"ez-toc-title\">\u76ee\u6b21<\/p>\n<\/div><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"http:\/\/cms.inter-arteq.com\/detail-of-logical-operation-in-javascript\/#%E7%B5%8C%E7%B7%AF\" title=\"\u7d4c\u7def\">\u7d4c\u7def<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"http:\/\/cms.inter-arteq.com\/detail-of-logical-operation-in-javascript\/#%E3%81%AE%E6%84%8F%E5%91%B3\" title=\"||\u306e\u610f\u5473\">||\u306e\u610f\u5473<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"http:\/\/cms.inter-arteq.com\/detail-of-logical-operation-in-javascript\/#_%E3%81%AE%E6%84%8F%E5%91%B3\" title=\"&amp;&amp;\u306e\u610f\u5473\">&amp;&amp;\u306e\u610f\u5473<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"http:\/\/cms.inter-arteq.com\/detail-of-logical-operation-in-javascript\/#%E3%81%BE%E3%81%A8%E3%82%81\" title=\"\u307e\u3068\u3081\">\u307e\u3068\u3081<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E7%B5%8C%E7%B7%AF\"><\/span>\u7d4c\u7def<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u5148\u65e5\u5f8c\u8f29\u306eJS\u306b\u3064\u3044\u3066\u306e\u76f8\u8ac7\u3092\u53d7\u3051\u3066\u3044\u305f\u3068\u304d\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u66f8\u304d\u65b9\u3092\u307f\u3066\u300c\u3053\u3093\u306a\u611f\u3058\u306b\u66f8\u3051\u308b\u3093\u3067\u3059\u306d\u30fc\u300d\u3068\u8a00\u308f\u308c\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">window.hoge = default_hoge || {};<\/pre>\n\n\n\n<p>\u7d50\u69cb\u3001\u666e\u6bb5\u304b\u3089\u4f7f\u3063\u305f\u308a\u306f\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u306a\u305c\u3001\u3053\u308c\u304c\u300cdefault_hoge\u304cundefined\u3084nil\u3060\u3063\u305f\u3089<code>{}<\/code>\u306b\u3059\u308b\u300d\u3068\u3044\u3046\u610f\u5473\u306b\u306a\u308b\u306e\u304b\u3001\u660e\u78ba\u306b\u7b54\u3048\u3089\u308c\u306a\u304b\u3063\u305f\u306e\u3067\u3001\u305d\u306e\u3053\u3068\u306b\u3064\u3044\u3066\u8abf\u3079\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%81%AE%E6%84%8F%E5%91%B3\"><\/span>||\u306e\u610f\u5473<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><code>||<\/code>\u306f\u8133\u5185\u3067\u300cor\u300d\u3063\u3066\u547c\u3093\u3060\u308a\u3057\u307e\u3059\u304c\u3001\u5b9f\u969b\u3001\u610f\u5473\u306for\u3068\u306f\u9650\u3089\u306a\u3044\u3088\u3046\u3067\u3059\u3002\u305d\u3082\u305d\u3082 <strong>Bool\u578b\u3092\u8fd4\u3059\u3068\u306f\u9650\u3089\u306a\u3044<\/strong> \u306e\u3067\u8ad6\u7406\u6f14\u7b97\u3068\u547c\u3076\u3053\u3068\u81ea\u4f53\u304c\u9055\u3046\u306e\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u5b9f\u969b\u306f<code>||<\/code>\u306f\u5de6\u5074\u304c<code>false, 0, undefined, null, '', NaN<\/code>\u3060\u3063\u305f\u3068\u304d\u3001\u53f3\u5074\u306e\u5024\u3092\u8fd4\u3057\u3001\u305d\u308c\u4ee5\u5916\u306f\u5de6\u5074\u306e\u5024\u3092\u8fd4\u3059\u3068\u3044\u3046\u6f14\u7b97\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4e0a\u306e\u4f8b\u306e\u5834\u5408\u3067\u306f<code>default_hoge<\/code>\u304c<code>false, 0, undefined, null, '', NaN<\/code>\u3060\u3063\u305f\u5834\u5408\u3001<code>||<\/code>\u306e\u53f3\u5074\u306b\u3042\u308b<code>{}<\/code>\u3092<code>window.hoge<\/code>\u3092\u4ee3\u5165\u3059\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\u307e\u305f\u3001default_hoge\u306b\u305d\u308c\u4ee5\u5916\u306e\u5024\u304c\u5165\u3063\u3066\u3044\u305f\u5834\u5408\u3001\u305d\u306e\u307e\u307ewindow.hoge\u306b\u4ee3\u5165\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p><code>false || true<\/code>\u3068\u3044\u3046\u8a18\u8ff0\u306e\u5834\u5408\u3001<code>true<\/code>\u306b\u306a\u308b\u305f\u3081\u3001\u3042\u305f\u304b\u3082<code>or<\/code>\u3067\u3042\u308b\u304b\u306e\u3088\u3046\u306b\u632f\u308b\u821e\u3046\u3068\u3044\u3046\u3053\u3068\u306e\u3088\u3046\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"_%E3%81%AE%E6%84%8F%E5%91%B3\"><\/span>&amp;&amp;\u306e\u610f\u5473<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><code>&amp;&amp;<\/code>\u3082\u4f3c\u305f\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u5de6\u5074\u304c<code>false, 0, undefined, null, '', NaN<\/code> <strong>\u4ee5\u5916<\/strong> \u3060\u3063\u305f\u3068\u304d\u3001\u53f3\u5074\u306e\u5024\u3092\u8fd4\u3057\u3001\u305d\u308c\u4ee5\u5916\u306f\u5de6\u5074\u306e\u5024\u3092\u8fd4\u3059\u3068\u3044\u3046\u6f14\u7b97\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u7d50\u679c\u3001<code>false &amp;&amp; true<\/code>\u306f\u5de6\u5074\u304c\u8fd4\u308afalse, <code>true &amp;&amp; true<\/code>\u306f\u53f3\u5074\u306e\u5024\u304c\u8fd4\u308a\u3001false\u3068\u3044\u3046and\u6f14\u7b97\u306e\u3088\u3046\u306b\u632f\u308b\u821e\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%81%BE%E3%81%A8%E3%82%81\"><\/span>\u307e\u3068\u3081<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u4f55\u6c17\u306a\u304f\u6163\u7528\u53e5\u7684\u306b\u4f7f\u3063\u3066\u3044\u308b\u30b3\u30fc\u30c9\u3082\u8abf\u3079\u3066\u307f\u308b\u3068\u3001\u30a2\u30cf\u4f53\u9a13\u304c\u3067\u304d\u3066\u5b09\u3057\u3044\u3067\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7d4c\u7def \u5148\u65e5\u5f8c\u8f29\u306eJS\u306b\u3064\u3044\u3066\u306e\u76f8\u8ac7\u3092\u53d7\u3051\u3066\u3044\u305f\u3068\u304d\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u66f8\u304d\u65b9\u3092\u307f\u3066\u300c\u3053\u3093\u306a\u611f\u3058\u306b\u66f8\u3051\u308b\u3093\u3067\u3059\u306d\u30fc\u300d\u3068\u8a00\u308f\u308c\u307e\u3057\u305f\u3002 window.hoge = default_hoge || {}; \u7d50\u69cb\u3001\u666e\u6bb5\u304b\u3089\u4f7f\u3063\u305f\u308a\u306f\u3057 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":208500,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[5],"tags":[43],"class_list":["post-4488","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-program","tag-javascript"],"aioseo_notices":[],"jetpack_featured_media_url":"http:\/\/cms.inter-arteq.com\/wp-content\/uploads\/2022\/03\/detail-of-logical-operation-in-javascript.png","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"http:\/\/cms.inter-arteq.com\/wp-json\/wp\/v2\/posts\/4488"}],"collection":[{"href":"http:\/\/cms.inter-arteq.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/cms.inter-arteq.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/cms.inter-arteq.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/cms.inter-arteq.com\/wp-json\/wp\/v2\/comments?post=4488"}],"version-history":[{"count":2,"href":"http:\/\/cms.inter-arteq.com\/wp-json\/wp\/v2\/posts\/4488\/revisions"}],"predecessor-version":[{"id":208482,"href":"http:\/\/cms.inter-arteq.com\/wp-json\/wp\/v2\/posts\/4488\/revisions\/208482"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/cms.inter-arteq.com\/wp-json\/wp\/v2\/media\/208500"}],"wp:attachment":[{"href":"http:\/\/cms.inter-arteq.com\/wp-json\/wp\/v2\/media?parent=4488"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/cms.inter-arteq.com\/wp-json\/wp\/v2\/categories?post=4488"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/cms.inter-arteq.com\/wp-json\/wp\/v2\/tags?post=4488"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}