{"id":7720,"date":"2019-09-19T10:00:25","date_gmt":"2019-09-19T01:00:25","guid":{"rendered":"https:\/\/www.gigas-jp.com\/appnews\/?p=7720"},"modified":"2019-09-17T15:01:44","modified_gmt":"2019-09-17T06:01:44","slug":"javascript-localstorage%e3%81%ab%e9%85%8d%e5%88%97%e3%82%92%e4%bf%9d%e5%ad%98%e3%81%99%e3%82%8b","status":"publish","type":"post","link":"https:\/\/www.gigas-jp.com\/appnews\/archives\/7720","title":{"rendered":"Javascript localStorage\u306b\u914d\u5217\u3092\u4fdd\u5b58\u3059\u308b"},"content":{"rendered":"\n<p>\u753b\u9762\u5185\u306e\u5404UI\u306e\u8a2d\u5b9a\u72b6\u6cc1\u3092\u30da\u30fc\u30b8\u30ea\u30ed\u30fc\u30c9\u5f8c\u3082\u5fa9\u5143\u3055\u305b\u308b\u5fc5\u8981\u304c\u3042\u308a\u3001<br> \u3044\u3063\u305f\u3093localStorage\u306b\u8a2d\u5b9a\u72b6\u6cc1\u306e\u4fdd\u5b58\u3092\u304a\u3053\u306a\u3044\u3001\u5fa9\u5143\u6642\u306b<br> localStorage\u304b\u3089\u53d6\u308a\u51fa\u3057\u305f\u8a2d\u5b9a\u60c5\u5831\u3092\u53cd\u6620\u3055\u305b\u308b\u3001<br> \u3068\u3044\u3046\u624b\u9806\u3067\u691c\u8a0e\u3057\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<!--more-->\n\n\n\n<p>\u4ee5\u4e0b\u306e\u70b9\u3092\u6ce8\u610f\u3057\u306a\u3044\u3068\u3046\u307e\u304f\u3044\u304b\u306a\u304b\u3063\u305f\u306e\u3067\u3001<br>\n\u6ce8\u610f\u70b9\u3068\u89e3\u6c7a\u7b56\u3092\u5171\u6709\u3057\u305f\u304f\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5f53\u521d\u3001\u4e0b\u8a18\u306e\u65b9\u6cd5\u3067\u691c\u8a0e\u3057\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/\u8a2d\u5b9a\u72b6\u6cc1\u3092\u914d\u5217\u306b\u4fdd\u5b58\u3057\u307e\u3059\u3002\nvar grstatus = [0,1];\n\n\/\/localStorage\u306b\u4fdd\u5b58\u3057\u307e\u3059\u3002\nlocalStorage.setItem('grstatus', grstatus);\n\n\/\/\u30da\u30fc\u30b8\u30ea\u30ed\u30fc\u30c9\u6642\u306e\u51e6\u7406\n\/\/localStorage\u304b\u3089\u53d6\u308a\u51fa\u3057\nvar grstatus2 = localStorage.getItem('grstatus');\n\n\/\/grstatus2\u306e\u914d\u5217\u60c5\u5831\u3092\u5143\u306b\u30da\u30fc\u30b8\u8a2d\u5b9a\u72b6\u6cc1\u3092\u5fa9\u5143<\/code><\/pre>\n\n\n\n<p>\u4ee5\u4e0a\u306e\u8a2d\u5b9a\u65b9\u6cd5\u3067\u306f\u3046\u307e\u304f\u3044\u304d\u307e\u305b\u3093\u3067\u3057\u305f\u3002<br><br> localStorage\u3078\u306e\u4fdd\u5b58\u3068localStorage\u304b\u3089\u306e\u53d6\u308a\u51fa\u3057\u306f<br> \u7121\u4e8b\u3001\u304a\u3053\u306a\u3048\u3066\u3044\u308b\u306e\u3067\u3059\u304c<br> \u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3067\u3001console.log\u3067\u51fa\u529b\u3057\u3066\u539f\u56e0\u3092\u78ba\u8a8d\u3057\u305f\u3068\u3053\u308d\u3001<br> \u300clocalStorage\u306b\u4fdd\u5b58\u3059\u308b\u524d\u306e\u914d\u5217\u306e\u9577\u3055\u300d\u3068<br> \u300clocalStorage\u304b\u3089\u53d6\u308a\u51fa\u3057\u305f\u969b\u306e\u914d\u5217\u306e\u9577\u3055\u300d\u304c\u7570\u306a\u3063\u3066\u3044\u308b\u3053\u3068\u304c<br> \u308f\u304b\u308a\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/\u8a2d\u5b9a\u72b6\u6cc1\u3092\u914d\u5217\u306b\u4fdd\u5b58\u3057\u307e\u3059\u3002\nvar grstatus = [0,1];\n\n\/\/\u914d\u5217\u306e\u9577\u3055\u3092\u78ba\u8a8d(before)\nconsole.log(\"before: \"+grstatus.length);\n\n\/\/localStorage\u306b\u4fdd\u5b58\u3057\u307e\u3059\u3002\nlocalStorage.setItem('grstatus', grstatus);\n\n\/\/\u30da\u30fc\u30b8\u30ea\u30ed\u30fc\u30c9\u6642\u306e\u51e6\u7406\n\/\/localStorage\u304b\u3089\u53d6\u308a\u51fa\u3057\nvar grstatus2 = localStorage.getItem('grstatus');\n\n\/\/\u914d\u5217\u306e\u9577\u3055\u3092\u78ba\u8a8d(after)\nconsole.log(\"after: \"+grstatus2.length);\n\n\/\/grstatus2\u306e\u914d\u5217\u60c5\u5831\u3092\u5143\u306b\u30da\u30fc\u30b8\u8a2d\u5b9a\u72b6\u6cc1\u3092\u5fa9\u5143<\/code><\/pre>\n\n\n\n<p>\u4e0a\u8a18\u306e\u5b9f\u884c\u7d50\u679c\uff1a<\/p>\n\n\n\n<p><strong>before: 2<br>after: 3<\/strong><\/p>\n\n\n\n<p>localStorage\u304b\u3089\u53d6\u308a\u51fa\u3057\u305f\u3042\u3068\u306f\u914d\u5217\u306e\u9577\u3055\u304c\u3072\u3068\u3064\u5897\u3048\u3066\u3044\u307e\u3057\u305f\u3002<br>\n\u30ab\u30f3\u30de(,)\u533a\u5207\u308a\u306e\u914d\u5217\u3068\u3057\u3066\u8a8d\u8b58\u3055\u308c\u3066\u3044\u306a\u3044\u3088\u3046\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u3044\u3063\u305f\u3093JSON\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306b\u5909\u63db\u3057\u3066\u4fdd\u5b58\u3092\u304a\u3053\u306a\u3044\u3001<br>\n\u53d6\u308a\u51fa\u3057\u6642\u306b\u3082JSON\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u304b\u3089\u914d\u5217\u306b\u5909\u63db\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u304c\u4fee\u6b63\u7248\u306e\u30b3\u30fc\u30c9\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/\u8a2d\u5b9a\u72b6\u6cc1\u3092\u914d\u5217\u306b\u4fdd\u5b58\u3057\u307e\u3059\u3002\nvar grstatus = [0,1];\n\n\/\/\u914d\u5217\u306e\u9577\u3055\u3092\u78ba\u8a8d(before)\nconsole.log(\"before: \"+grstatus.length);\n\n\/\/JSON.stringify\u3057\u305f\u4e0a\u3067\u3001localStorage\u306b\u4fdd\u5b58\u3057\u307e\u3059\u3002\nlocalStorage.setItem('grstatus', JSON.stringify(grstatus));\n\n\/\/\u30da\u30fc\u30b8\u30ea\u30ed\u30fc\u30c9\u6642\u306e\u51e6\u7406\n\/\/localStorage\u304b\u3089\u53d6\u308a\u51fa\u3057\nvar grstatus2 = localStorage.getItem('grstatus');\n\n\/\/\u53d6\u308a\u51fa\u3057\u305f\u5f8c\u306bJSON.parse\u3092\u304b\u3051\u307e\u3059\u3002\ngrstatus2 = JSON.parse(grstatus2);\n\n\/\/grstatus2\u306e\u914d\u5217\u60c5\u5831\u3092\u5143\u306b\u30da\u30fc\u30b8\u8a2d\u5b9a\u72b6\u6cc1\u3092\u5fa9\u5143\n\n\/\/\u914d\u5217\u306e\u9577\u3055\u3092\u78ba\u8a8d(after)\nconsole.log(\"after: \"+grstatus2.length);<\/code><\/pre>\n\n\n\n<p>\u4e0a\u8a18\u306e\u5b9f\u884c\u7d50\u679c<\/p>\n\n\n\n<p><strong>before: 2<br>after: 2<\/strong><\/p>\n\n\n\n<p>\u3053\u308c\u3067\u6b63\u3057\u304f\u52d5\u4f5c\u3057\u307e\u3057\u305f\u3002<br><br>\u6728\u66dc\u65e5\u62c5\u5f53:nishida<\/p>\n<div class='wp_social_bookmarking_light'>\n            <div class=\"wsbl_google_plus_one\"><g:plusone size=\"medium\" annotation=\"none\" href=\"https:\/\/www.gigas-jp.com\/appnews\/archives\/7720\" ><\/g:plusone><\/div>\n            <div class=\"wsbl_hatena_button\"><a href=\"\/\/b.hatena.ne.jp\/entry\/https:\/\/www.gigas-jp.com\/appnews\/archives\/7720\" class=\"hatena-bookmark-button\" data-hatena-bookmark-title=\"Javascript localStorage\u306b\u914d\u5217\u3092\u4fdd\u5b58\u3059\u308b\" data-hatena-bookmark-layout=\"standard\" title=\"\u3053\u306e\u30a8\u30f3\u30c8\u30ea\u30fc\u3092\u306f\u3066\u306a\u30d6\u30c3\u30af\u30de\u30fc\u30af\u306b\u8ffd\u52a0\"> <img src=\"\/\/b.hatena.ne.jp\/images\/entry-button\/button-only@2x.png\" alt=\"\u3053\u306e\u30a8\u30f3\u30c8\u30ea\u30fc\u3092\u306f\u3066\u306a\u30d6\u30c3\u30af\u30de\u30fc\u30af\u306b\u8ffd\u52a0\" width=\"20\" height=\"20\" style=\"border: none;\" \/><\/a><script type=\"text\/javascript\" src=\"\/\/b.hatena.ne.jp\/js\/bookmark_button.js\" charset=\"utf-8\" async=\"async\"><\/script><\/div>\n            <div class=\"wsbl_twitter\"><a href=\"https:\/\/twitter.com\/share\" class=\"twitter-share-button\" data-url=\"https:\/\/www.gigas-jp.com\/appnews\/archives\/7720\" data-text=\"Javascript localStorage\u306b\u914d\u5217\u3092\u4fdd\u5b58\u3059\u308b\" data-via=\"GIGASJAPAN_APPS\" data-lang=\"ja\">Tweet<\/a><\/div>\n            <div class=\"wsbl_facebook_like\"><div id=\"fb-root\"><\/div><fb:like href=\"https:\/\/www.gigas-jp.com\/appnews\/archives\/7720\" layout=\"button_count\" action=\"like\" width=\"100\" share=\"false\" show_faces=\"false\" ><\/fb:like><\/div>\n            <div class=\"wsbl_facebook_send\"><div id=\"fb-root\"><\/div><fb:send href=\"https:\/\/www.gigas-jp.com\/appnews\/archives\/7720\" colorscheme=\"light\" ><\/fb:send><\/div>\n    <\/div>\n<br class='wp_social_bookmarking_light_clear' \/>\n","protected":false},"excerpt":{"rendered":"<p>\u753b\u9762\u5185\u306e\u5404UI\u306e\u8a2d\u5b9a\u72b6\u6cc1\u3092\u30da\u30fc\u30b8\u30ea\u30ed\u30fc\u30c9\u5f8c\u3082\u5fa9\u5143\u3055\u305b\u308b\u5fc5\u8981\u304c\u3042\u308a\u3001 \u3044\u3063\u305f\u3093localStorage\u306b\u8a2d\u5b9a\u72b6\u6cc1\u306e\u4fdd\u5b58\u3092\u304a\u3053\u306a\u3044\u3001\u5fa9\u5143\u6642\u306b localStorage\u304b\u3089\u53d6\u308a\u51fa\u3057\u305f\u8a2d\u5b9a\u60c5\u5831\u3092\u53cd\u6620\u3055\u305b\u308b\u3001 \u3068\u3044\u3046\u624b\u9806\u3067\u691c\u8a0e\u3057\u3066 [&hellip;]<\/p>\n","protected":false},"author":16,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[35],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/www.gigas-jp.com\/appnews\/wp-json\/wp\/v2\/posts\/7720"}],"collection":[{"href":"https:\/\/www.gigas-jp.com\/appnews\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gigas-jp.com\/appnews\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gigas-jp.com\/appnews\/wp-json\/wp\/v2\/users\/16"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gigas-jp.com\/appnews\/wp-json\/wp\/v2\/comments?post=7720"}],"version-history":[{"count":7,"href":"https:\/\/www.gigas-jp.com\/appnews\/wp-json\/wp\/v2\/posts\/7720\/revisions"}],"predecessor-version":[{"id":7727,"href":"https:\/\/www.gigas-jp.com\/appnews\/wp-json\/wp\/v2\/posts\/7720\/revisions\/7727"}],"wp:attachment":[{"href":"https:\/\/www.gigas-jp.com\/appnews\/wp-json\/wp\/v2\/media?parent=7720"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gigas-jp.com\/appnews\/wp-json\/wp\/v2\/categories?post=7720"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gigas-jp.com\/appnews\/wp-json\/wp\/v2\/tags?post=7720"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}