{"id":3142,"date":"2019-05-20T19:10:44","date_gmt":"2019-05-20T10:10:44","guid":{"rendered":"https:\/\/taitan916.info\/blog\/?p=3142"},"modified":"2024-02-20T17:19:24","modified_gmt":"2024-02-20T08:19:24","slug":"post-3142","status":"publish","type":"post","link":"https:\/\/taitan916.info\/blog\/archives\/3142","title":{"rendered":"JavaScript\u306e\u5909\u6570\u5ba3\u8a00\u3067\u3042\u308bvar \/ let \/ const\u306e\u4f7f\u3044\u5206\u3051\u306b\u3064\u3044\u3066"},"content":{"rendered":"<p>JavaScript\u95a2\u9023\u306e\u8abf\u3079\u7269\u3092\u3057\u3066\u3044\u305f\u969b\u3001\u5909\u6570\u306e\u5ba3\u8a00\u6642\u306bvar\u3067\u306f\u306a\u304flet\u3068\u8a18\u8ff0\u3055\u308c\u3066\u3044\u308b\u30bd\u30fc\u30b9\u3092\u898b\u304b\u3051\u305f\u3002\u521d\u3081\u3066\u898b\u305f\u306e\u3067\u4f55\u306a\u306e\u304b\u8abf\u3079\u3066\u307f\u308b\u3068var\u3068let\u4ee5\u5916\u306b\u3082const\u3068\u3044\u3046\u3082\u306e\u3082\u3042\u3063\u305f\u3002\u4ee5\u4e0b\u306b\u305d\u308c\u305e\u308c\u306e\u9055\u3044\u3084\u4f7f\u3044\u65b9\u3092\u30e1\u30e2\u3002<\/p>\n<p>&nbsp;<\/p>\n<h2>\u9055\u3044<\/h2>\n<table>\n<tbody>\n<tr>\n<td><\/td>\n<td>\u518d\u5ba3\u8a00<\/td>\n<td>\u518d\u4ee3\u5165<\/td>\n<td>\u521d\u671f\u5024\u306e\u7701\u7565<\/td>\n<td>\u30b9\u30b3\u30fc\u30d7\u5916\u306e\u547c\u3073\u51fa\u3057<\/td>\n<\/tr>\n<tr>\n<td>var<\/td>\n<td>\u25cb<\/td>\n<td>\u25cb<\/td>\n<td>\u25cb<\/td>\n<td>\u25cb<\/td>\n<\/tr>\n<tr>\n<td>let<\/td>\n<td>\u00d7<\/td>\n<td>\u25cb<\/td>\n<td>\u25cb<\/td>\n<td>\u00d7<\/td>\n<\/tr>\n<tr>\n<td>const<\/td>\n<td>\u00d7<\/td>\n<td>\u00d7<\/td>\n<td>\u00d7<\/td>\n<td>\u00d7<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p>\u518d\u5ba3\u8a00\u3001\u518d\u4ee3\u5165\u3001\u521d\u671f\u5024\u306e\u7701\u7565\u3001\u30b9\u30b3\u30fc\u30d7\u5916\u306e\u547c\u3073\u51fa\u3057\u306b\u3064\u3044\u3066\u306e\u8a73\u7d30\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3002<\/p>\n<h3>\u518d\u5ba3\u8a00<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">var hoge = 1;\r\nvar hoge = 2;<\/pre>\n<h3>\u518d\u4ee3\u5165<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">var hoge = 1;\r\nhoge = 2;<\/pre>\n<h3>\u521d\u671f\u5024\u306e\u7701\u7565<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">var hoge;<\/pre>\n<h3>\u30b9\u30b3\u30fc\u30d7\u5916\u306e\u547c\u3073\u51fa\u3057<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">if( num &lt; 1  ){\r\n    var hoge = 1;\r\n}\r\nconsole.log(hoge); \/\/\u3053\u3053\u3067\u547c\u3073\u51fa\u305b\u308b\u304b\u3069\u3046\u304b<\/pre>\n<p>&nbsp;<\/p>\n<h2>\u4f7f\u3044\u65b9<\/h2>\n<p>\u57fa\u672c\u7684\u306b\u306f\u518d\u4ee3\u5165\u306e\u53ef\u80fd\u6027\u304c\u3042\u308c\u3070let\u3092\u3001\u306a\u3051\u308c\u3070const\u3092\u4f7f\u3046\u306e\u304c\u826f\u3044\u307f\u305f\u3044\u3002<\/p>\n<p>&nbsp;<\/p>\n<h2>\u53c2\u8003\u30b5\u30a4\u30c8<\/h2>\n<p><a href=\"https:\/\/techacademy.jp\/magazine\/14872\" target=\"_blank\" rel=\"noopener\">https:\/\/techacademy.jp\/magazine\/14872<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>JavaScript\u95a2\u9023\u306e\u8abf\u3079\u7269\u3092\u3057\u3066\u3044\u305f\u969b\u3001\u5909\u6570\u306e\u5ba3\u8a00\u6642\u306bvar\u3067\u306f\u306a\u304flet ... <\/p>\n","protected":false},"author":1,"featured_media":1067,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-3142","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-javascript"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/posts\/3142","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/comments?post=3142"}],"version-history":[{"count":2,"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/posts\/3142\/revisions"}],"predecessor-version":[{"id":4737,"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/posts\/3142\/revisions\/4737"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/media\/1067"}],"wp:attachment":[{"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/media?parent=3142"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/categories?post=3142"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/taitan916.info\/blog\/wp-json\/wp\/v2\/tags?post=3142"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}