{"id":5341,"date":"2019-12-17T16:59:31","date_gmt":"2019-12-17T07:59:31","guid":{"rendered":"https:\/\/blog.capilano-fw.com\/?p=5341"},"modified":"2019-12-17T16:59:31","modified_gmt":"2019-12-17T07:59:31","slug":"localstorage%e3%81%ae%e4%bd%bf%e3%81%84%e6%96%b9%e3%83%bb%e5%ae%9f%e4%be%8b%e5%85%a8%ef%bc%99%e4%bb%b6%ef%bc%81","status":"publish","type":"post","link":"https:\/\/blog.capilano-fw.com\/?p=5341","title":{"rendered":"localStorage\u306e\u4f7f\u3044\u65b9\u30fb\u5b9f\u4f8b\u5168\uff19\u4ef6\uff01"},"content":{"rendered":"

\u3055\u3066\u3055\u3066\u3001\u3053\u306e\u9593\u516c\u958b\u3057\u305f\u30e6\u30fc\u30b6\u30d3\u30ea\u30c6\u30a3\uff01\u30da\u30fc\u30b8\u79fb\u52d5\u3057\u3066\u3082Vue\u306e\u72b6\u614b\u3092\u4fdd\u6301\u3059\u308b\u65b9\u6cd5<\/a>\u3067\u5c11\u3057\u89e6\u308c\u307e\u3057\u305f\u304cJavaScript<\/code>\u306b\u306fCookie<\/code>\u306e\u3088\u3046\u306b\u30d6\u30e9\u30a6\u30b6\u5185\u306b\u30c7\u30fc\u30bf\u3092\u4fdd\u7ba1\u3057\u3066\u304a\u304f\u6a5f\u80fd\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u305d\u306e\u305f\u3081\u3001\u4f8b\u3048\u3070\u691c\u7d22\u30ad\u30fc\u30ef\u30fc\u30c9\u306a\u3069\u3092\u4fdd\u5b58\u3057\u3066\u304a\u3051\u3070\u3001\u305d\u306e\u30da\u30fc\u30b8\u306b\u623b\u3063\u3066\u304d\u305f\u3068\u304d\u306b\u691c\u7d22\u6e08\u307f\u306e\u30da\u30fc\u30b8\u3092\u898b\u305b\u305f\u308a\u3001\u591c\u9593\u30e2\u30fc\u30c9\u306e\u8a2d\u5b9a\u306a\u3069\u3092\u3057\u3066\u304a\u3044\u3066\u898b\u305f\u76ee\u3092\u5909\u66f4\u3057\u305f\u308a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3068\u3044\u3046\u308f\u3051\u3067\u3059\u3002<\/p>\n

\u3064\u307e\u308a\u3001localStorage<\/code>\u3084sessionStorage<\/code>\u3068\u547c\u3070\u308c\u308b\u6a5f\u80fd\u3067\u3059\u306d\u3002<\/p>\n

\u305d\u3053\u3067\u4eca\u56de\u306f\u3053\u306e\u6a5f\u80fd\u306e\u4f7f\u3044\u65b9\u3092\u5b9f\u4f8b\u3068\u3057\u3066\u3054\u7d39\u4ecb\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n

\u305c\u3072\u7686\u3055\u3093\u306e\u304a\u5f79\u306b\u7acb\u3066\u308b\u3068\u5b09\u3057\u3044\u3067\u3059\ud83d\ude0a\u2728<\/p>\n

\"\"<\/p>\n

\u958b\u767a\u74b0\u5883\uff1a<\/strong> Google Chrome 78<\/p>\n

\u203b \u306a\u304a\u3001\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u306f\u540c\u3058\u306a\u306e\u3067localStorage<\/code>\u3092\u4f7f\u3063\u3066\u8aac\u660e\u3092\u3057\u307e\u3059\u3002localStorage<\/code>\u3068sessionStorage<\/code>\u306e\u9055\u3044\u306flocalStorage\u3068sessionStorage\u306e\u9055\u3044\u3068\u306f\uff1f\uff1f<\/a>\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n

\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9<\/h1>\n

\u30c7\u30fc\u30bf\u3092\u4fdd\u5b58\u3059\u308b<\/h2>\n

\u30c7\u30fc\u30bf\u306e\u4fdd\u5b58\u306fsetItem()<\/code>\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n

localStorage.setItem('test_key', '\u30c6\u30b9\u30c8\u6587\u5b57\u5217');<\/strong><\/pre>\n
\u203b \u305f\u3060\u3057\u3001\u4fdd\u5b58\u3055\u308c\u305f\u5024\u306f\u6587\u5b57\u5217\u306b\u306a\u308a\u307e\u3059<\/strong>\u306e\u3067\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u6570\u5024\u3092\u4fdd\u5b58\u3057\u3066\u3082\u53d6\u308a\u51fa\u3059\u3068\u304d\u306b\u306f\u6587\u5b57\u5217\u306b\u306a\u3063\u3066\u3057\u307e\u3046\u306e\u3067\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n
localStorage.setItem('number', 1);<\/strong> \/\/ \u6587\u5b57\u5217\u3068\u3057\u3066\u4fdd\u5b58\u3055\u308c\u308b<\/pre>\n
\u203b \u306a\u304a\u3001\u914d\u5217\u3084\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u3057\u3066\u4fdd\u5b58\u3059\u308b\u5834\u5408\u306f\u914d\u5217\u3084\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4fdd\u5b58\u3001\u53d6\u5f97\u3059\u308b<\/a>\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n
\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b<\/h2>\n
\u30c7\u30fc\u30bf\u306e\u53d6\u5f97\u306f\u3001getItem()<\/code>\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n
const value = localStorage.getItem('test_key'); \/\/ \u6587\u5b57\u5217<\/strong><\/pre>\n
\u203b \u30c7\u30fc\u30bf\u3092\u4fdd\u5b58\u3059\u308b<\/a>\u3067\u3082\u8aac\u660e\u3057\u305f\u3068\u304a\u308a\u3001\u53d6\u5f97\u3067\u304d\u308b\u5024\u306f\u6587\u5b57\u5217\u306b\u306a\u308a\u307e\u3059\u3002
\n\u203b \u307e\u305f\u3001\u914d\u5217\u3084\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u3057\u3066\u53d6\u5f97\u3059\u308b\u5834\u5408\u306f<\/span>\u914d\u5217\u3084\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4fdd\u5b58\u3001\u53d6\u5f97\u3059\u308b<\/a>\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/span><\/p>\n
\u7279\u5b9a\u306e\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3059\u308b<\/h2>\n
\u3042\u308b\u7279\u5b9a\u306e\u30ad\u30fc\u3092\u4f7f\u3063\u3066\u3001\u305d\u306e\u5024\u3092\u524a\u9664\u3059\u308b\u306b\u306fremoveItem()<\/code>\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n
localStorage.removeItem('test_key');<\/strong> \/\/ test_key\u306e\u5185\u5bb9\u3092\u524a\u9664<\/pre>\n
\u5168\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3059\u308b<\/h2>\n
localStorage<\/code>\u306e\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3059\u308b\u306b\u306fclear()<\/code>\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n
localStorage.clear();<\/strong><\/pre>\n
\u203b \u305f\u3060\u3057\u3001\u524a\u9664\u3055\u308c\u308b\u306e\u306f\u300c\u30c9\u30e1\u30a4\u30f3\u5185\u306e\u300d\u5168\u30c7\u30fc\u30bf\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3084\u30dd\u30fc\u30c8\u304c\u9055\u3046\u30c7\u30fc\u30bf\u304c\u524a\u9664\u3055\u308c\u308b\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u8a73\u3057\u304f\u306f\u3001localStorage\u304c\u6709\u52b9\u306a\u7bc4\u56f2\u306f\uff1f\uff1f<\/a>\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n
\u5fdc\u7528\u7684\u306a\u4f7f\u3044\u65b9<\/h1>\n
\u914d\u5217\u3084\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4fdd\u5b58\u3001\u53d6\u5f97\u3059\u308b<\/h2>\n
localStorage<\/code>\u304c\u4fdd\u5b58\u3067\u304d\u308b\u306e\u306f\u6587\u5b57\u5217\u3060\u3051\u3067\u3059\u306e\u3067\u3001\u3082\u3057\u914d\u5217\u3084\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4fdd\u5b58\u3057\u305f\u3044\u5834\u5408\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306bJSON<\/code>\u306b\u5909\u63db\u3057\u3066\u304b\u3089\u4fdd\u5b58\u3057\u3001\u3055\u3089\u306b\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b\u5834\u5408\u306b\u306fJSON<\/code>\u3092\u5143\u306b\u623b\u3059\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
const data = {<\/strong>\r\n    key1: 'value1',<\/strong>\r\n    key2: 'value2',<\/strong>\r\n    key3: 'value3',<\/strong>\r\n};<\/strong>\r\nlocalStorage.setItem('test_key', JSON.stringify(data)); \/\/ JSON\u306b\u5909\u63db<\/strong>\r\nconst values = JSON.parse(localStorage.getItem('test_key')); \/\/ \u5143\u306b\u623b\u3059<\/strong><\/pre>\n
\u5168\u30c7\u30fc\u30bf\u3092\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u3057\u3066\u53d6\u5f97\u3059\u308b<\/h2>\n
localStorage<\/code>\u306b\u4fdd\u5b58\u3055\u308c\u308b\u30c7\u30fc\u30bf\u5168\u3066\u3092\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u5f62\u5f0f\u3067\u53d6\u5f97\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n
let object = {};<\/strong>\r\n\r\nfor(let i = 0 ; i < localStorage.length ; i++) {<\/strong>\r\n\r\n    let key = localStorage.key(i);<\/strong>\r\n    object[key] = localStorage.getItem(key);<\/strong>\r\n\r\n}<\/strong><\/pre>\n
\u306a\u304a\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306bfor in<\/code> \u5f62\u5f0f\u3067\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b\u3068length<\/code>\u306a\u3069\u3082\u5024\u306b\u5165\u3063\u3066\u304f\u308b\u306e\u3067\u4f7f\u3046\u3079\u304d\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n
\/\/ \u3010\u6ce8\u610f\u3011\u3053\u308c\u306f\u9593\u9055\u3063\u305f\u4f8b\u3067\u3059<\/strong>\r\nlet object = {};\r\n\r\nfor(let key in localStorage) {\r\n\r\n    object[key] = localStorage.getItem(key);\r\n\r\n}<\/pre>\n
\u5168\u30c7\u30fc\u30bf\u3092\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u3068\u3057\u3066\u53d6\u5f97\u3059\u308b<\/h2>\n
\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u914d\u5217\u3067\u307e\u3068\u3081\u3089\u308c\u305f\u3001\u3044\u308f\u3086\u308b\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u3067\u53d6\u5f97\u3059\u308b\u306b\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n
const collection = Object.keys(localStorage).map(key => {<\/strong>\r\n\r\n    return {<\/strong>\r\n        key: key,<\/strong>\r\n        value: localStorage.getItem(key)<\/strong>\r\n    }<\/strong>\r\n\r\n});<\/strong><\/pre>\n
\u53d6\u5f97\u3067\u304d\u308b\u5185\u5bb9\u306f\u3053\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\"\"<\/p>\n
\u306a\u304a\u3001\u30ad\u30fc\u3067\u4e26\u3079\u66ff\u3048\u305f\u3044\u5834\u5408\u306fsort()<\/code>\u3092\u8ffd\u52a0\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
const collection = Object.keys(localStorage).sort().<\/strong>map(key => {\r\n\r\n    return {\r\n        key: key,\r\n        value: localStorage.getItem(key)\r\n    }\r\n\r\n});<\/pre>\n
\u7d50\u679c\u306f\u3053\u3046\u306a\u308a\u307e\u3059\u3002<\/p>\n
\"\"<\/p>\n
localStorage\u304c\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u308b\u304b\u30c1\u30a7\u30c3\u30af\u3059\u308b<\/h2>\n
localStorage<\/code>\u306f\u3001IE<\/code>\u3092\u542b\u3080\u591a\u304f\u306e\u30d6\u30e9\u30a6\u30b6\u3067\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u30012019.12.16\u65e5\u73fe\u5728\u3001opera mini<\/code>\u306a\u3069\u3067\u306f\u30b5\u30dd\u30fc\u30c8\u5916\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u3082\u3057localStorage<\/code>\u306e\u30b5\u30dd\u30fc\u30c8\u3092\u30c1\u30a7\u30c3\u30af\u3057\u305f\u3044\u5834\u5408\u306f\u6b21\u306e\u3088\u3046\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
if(typeof localStorage === 'undefined') {<\/strong>\r\n\r\n    console.log('\u3053\u306e\u30d6\u30e9\u30a6\u30b6\u306f\u3001localStorage \u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u305b\u3093\u3002');<\/strong>\r\n\r\n}<\/strong><\/pre>\n
\u203b \u306a\u304a\u3001\u8a73\u3057\u3044\u30b5\u30dd\u30fc\u30c8\u72b6\u6cc1\u306f\u4ee5\u4e0b\u306e\u30da\u30fc\u30b8\u3067\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n