{"id":22228,"date":"2017-08-02T05:50:51","date_gmt":"2017-08-01T20:50:51","guid":{"rendered":"http:\/\/www.sejuku.net\/blog\/?p=22228"},"modified":"2024-05-06T11:42:02","modified_gmt":"2024-05-06T02:42:02","slug":"%e3%80%90javascript%e5%85%a5%e9%96%80%e3%80%91%e9%85%8d%e5%88%97%e3%81%ae%e8%a6%81%e7%b4%a0%e3%82%92%e3%80%8c%e6%a4%9c%e7%b4%a2%e3%80%8d%e3%81%99%e3%82%8b4%e3%81%a4%e3%81%ae%e6%96%b9%e6%b3%95%ef%bc%81","status":"publish","type":"post","link":"https:\/\/www.sejuku.net\/blog\/22228","title":{"rendered":"\u3010JavaScript\u5165\u9580\u3011\u914d\u5217\u306e\u8981\u7d20\u3092\u691c\u7d22\u3059\u308b4\u3064\u306e\u65b9\u6cd5\uff01"},"content":{"rendered":"

\u3053\u3093\u306b\u3061\u306f\u3001\u30e9\u30a4\u30bf\u30fc\u306e\u30de\u30b5\u30c8\u3067\u3059\uff01<\/p>\n

\u4eca\u56de\u306f\u3001\u914d\u5217\u306e\u8981\u7d20\u3092\u691c\u7d22\u3059\u308b\u6642\u306b\u4fbf\u5229\u306a\u30e1\u30bd\u30c3\u30c9<\/b>\u3092\u3054\u7d39\u4ecb\u81f4\u3057\u307e\u3059\uff01JavaScript\u306b\u304a\u3051\u308b\u914d\u5217\u64cd\u4f5c\u3067\u306f\u3001\u7279\u5b9a\u306e\u8981\u7d20\u3060\u3051\u3092\u63a2\u3057\u51fa\u3057\u3066\u62bd\u51fa\u3059\u308b\u30b1\u30fc\u30b9\u304c\u5c11\u306a\u304f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n

\u666e\u901a\u306b\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u7d44\u3093\u3067\u3057\u307e\u3046\u3068\u3001\u7121\u99c4\u306b\u30b3\u30fc\u30c9\u91cf\u304c\u591a\u304f\u306a\u3063\u305f\u308a\u9593\u9055\u3044\u3082\u8d77\u304d\u3084\u3059\u3044\u306e\u3067\u3001\u898b\u77e5\u3089\u306c\u30d0\u30b0\u3092\u4f5c\u3063\u3066\u3057\u307e\u3044\u304c\u3061<\/b>\u3067\u3059\u3002<\/p>\n

\u305d\u3053\u3067\u3001\u3053\u306e\u8a18\u4e8b\u3067\u306f\u914d\u5217\u3092\u691c\u7d22\u3059\u308b\u57fa\u672c\u30e1\u30bd\u30c3\u30c9\u3068\u3044\u3046\u57fa\u672c\u7684\u306a\u5185\u5bb9\u304b\u3089\u3001\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3092\u4f7f\u3063\u3066\u307f\u308b\u306a\u3069\u5fdc\u7528\u7684\u306a\u5185\u5bb9\u306b\u3064\u3044\u3066\u3082\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n

\u52b9\u7387\u3088\u304f\u914d\u5217\u306e\u8981\u7d20\u3092\u691c\u7d22\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u30e1\u30bd\u30c3\u30c9\u3092\u53b3\u9078\u3057\u3001\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3068\u4e00\u7dd2\u306b\u6d3b\u7528\u65b9\u6cd5\u3092\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u306e\u3067\u3001\u305c\u3072\u53c2\u8003\u306b\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n

\u914d\u5217\u3092\u691c\u7d22\u3059\u308b\u57fa\u672c\u30e1\u30bd\u30c3\u30c9<\/h2>\n

\u307e\u305a\u306f\u3001\u914d\u5217\u306e\u8981\u7d20\u3092\u691c\u7d22\u3059\u308b\u3046\u3048\u3067\u3001\u6700\u3082\u57fa\u672c\u3068\u306a\u308b\u30e1\u30bd\u30c3\u30c9\u304b\u3089\u5b66\u7fd2\u3092\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\uff01\u5229\u7528\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u306findexOf\u3068lastIndexOf\u3067\u3059\u3002<\/p>\n

\u3053\u308c\u306f\u3001\u6587\u5b57\u5217\u3092\u691c\u7d22\u3059\u308b\u6642\u306b\u3082\u5229\u7528\u3067\u304d\u308b\u3082\u306e\u3067\u3001\u4f7f\u3044\u65b9\u3082\u307b\u3068\u3093\u3069\u540c\u3058\u306a\u306e\u3067\u4e00\u77f3\u4e8c\u9ce5\u306e\u30e1\u30bd\u30c3\u30c9\u3068\u3082\u8a00\u3048\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n \n

\n
\n
\n \n <\/div>\n
\n
\u3010JavaScript\u5165\u9580\u3011\u6587\u5b57\u5217\u306e\u691c\u7d22\u307e\u3068\u3081(indexOf\/search\/match\/test)<\/div>\n
\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/a>\n \n

indexOf \u3092\u4f7f\u3063\u305f\u691c\u7d22\u65b9\u6cd5\uff01<\/h3>\n

\u307e\u305a\u3001\u6700\u521d\u306bindexOf\u306e\u4f7f\u3044\u65b9\u3092\u5b66\u7fd2\u3057\u307e\u3057\u3087\u3046\uff01\u4e00\u822c\u7684\u306a\u69cb\u6587\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n

\r\n\r\nvar items = \u914d\u5217\u30c7\u30fc\u30bf;\r\n\r\nitems.indexOf( \u691c\u7d22\u5bfe\u8c61\u306e\u8981\u7d20, \u691c\u7d22\u958b\u59cb\u4f4d\u7f6e );\r\n\r\n<\/pre>\n
\u914d\u5217\u30c7\u30fc\u30bf\u306e\u4e2d\u3092\u691c\u7d22\u3059\u308b\u969b\u306b\u3001\u691c\u7d22\u5bfe\u8c61\u3068\u306a\u308b\u8981\u7d20\u306e\u5024\u3092\u300cindexOf\u300d\u306b\u6307\u5b9a\u3059\u308c\u3070\u3001\u305d\u306e\u691c\u7d22\u7d50\u679c\u3092\u8fd4\u308a\u5024\u3068\u3057\u3066\u53d6\u5f97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
\u8fd4\u308a\u5024\u306f\u3001\u8981\u7d20\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u756a\u53f7\u3068\u306a\u308a\u3001\u691c\u7d22\u3059\u308b\u969b\u306b\u958b\u59cb\u4f4d\u7f6e\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002\uff08\u958b\u59cb\u4f4d\u7f6e\u3092\u7701\u7565\u3057\u305f\u5834\u5408\u306f0\u3068\u540c\u3058\u6271\u3044\uff09<\/p>\n
\u305d\u308c\u3067\u306f\u3001\u5b9f\u969b\u306e\u4f7f\u7528\u4f8b\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\uff01\u6b21\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u898b\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
\r\n\r\nvar items = ['\u30ea\u30f3\u30b4', '\u30e1\u30ed\u30f3', '\u30a4\u30c1\u30b4', '\u30d0\u30ca\u30ca'];\r\n\r\n\/\/\u914d\u5217\u5185\u306b\u300c\u30a4\u30c1\u30b4\u300d\u304c\u5b58\u5728\u3059\u308b\u304b\u3092\u691c\u7d22\u3059\u308b\r\nvar result = items.indexOf( '\u30a4\u30c1\u30b4' );\r\n\r\nconsole.log( result );\r\n\r\n<\/pre>\n
\u51fa\u529b\u7d50\u679c\u306f\u2026<\/p>\n
\r\n2\r\n<\/pre>\n
\u3068\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u306f\u3001\u300c\u30a4\u30c1\u30b4\u300d\u3068\u3044\u3046\u8981\u7d20\u304c\u3001\u914d\u5217items\u306e\u4e2d\u306b\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u691c\u7d22\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u300citems\u300d\u306e\u4e2d\u306b\u306f\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u756a\u53f7\u306e2\u756a\u76ee\u306b\u300c\u30a4\u30c1\u30b4\u300d\u3068\u3044\u3046\u5024\u304c\u5b58\u5728\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u7d50\u679c\u3068\u3057\u3066\u8fd4\u308a\u5024\u300c2\u300d\u3092\u53d6\u5f97\u3057\u3066\u3044\u308b\u308f\u3051\u3067\u3059\u3002
\n\uff08\u5b58\u5728\u3057\u306a\u304b\u3063\u305f\u5834\u5408\u306f\u300c-1\u300d\u304c\u8fd4\u308a\u307e\u3059\uff09<\/p>\n
\u3061\u306a\u307f\u306b\u3001\u691c\u7d22\u3057\u3088\u3046\u3068\u3057\u3066\u3044\u308b\u8981\u7d20\u304c\u914d\u5217\u5185\u306b\u8907\u6570\u5b58\u5728\u3057\u3066\u3044\u305f\u3089\u3001\u3069\u3046\u306a\u308b\u3067\u3057\u3087\u3046\u304b\uff1f\u6b21\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\uff01<\/p>\n
\r\n\r\nvar items = ['\u30a4\u30c1\u30b4', '\u30e1\u30ed\u30f3', '\u30a4\u30c1\u30b4', '\u30d0\u30ca\u30ca'];\r\n\r\nvar result = items.indexOf( '\u30a4\u30c1\u30b4' );\r\n\r\nconsole.log( result );\r\n\r\n<\/pre>\n
\u51fa\u529b\u7d50\u679c\u306f\u2026<\/p>\n
\r\n\uff10\r\n<\/pre>\n
\u3068\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u306f\u3001\u300c\u30a4\u30c1\u30b4\u300d\u3068\u3044\u3046\u8981\u7d20\u3092\u691c\u7d22\u3057\u3088\u3046\u3068\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u914d\u5217\u300citems\u300d\u306e\u4e2d\u306b\u306f2\u3064\u5b58\u5728\u3057\u3066\u3044\u308b\u306e\u304c\u5206\u304b\u308a\u307e\u3059\u3002<\/p>\n
\u3057\u304b\u3057\u306a\u304c\u3089\u3001\u300cindexOf\u300d\u30e1\u30bd\u30c3\u30c9\u306f0\u756a\u76ee\u304b\u3089\u9806\u756a\u306b\u691c\u7d22\u3057\u3001\u6700\u521d\u306b\u5408\u81f4\u3057\u305f\u8981\u7d20\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u756a\u53f7\u3057\u304b\u8fd4\u3055\u306a\u3044\u306e\u3067\u3001\u51fa\u529b\u7d50\u679c\u306f\u300c0\u300d\u306b\u306a\u3063\u3066\u3044\u308b\u308f\u3051\u3067\u3059\u3002<\/p>\n
2\u3064\u76ee\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u756a\u53f7\u3082\u53d6\u5f97\u3057\u305f\u3044\u5834\u5408\u306f\u3001\u300cindexOf\u300d\u306e\u958b\u59cb\u4f4d\u7f6e\u3092\u6307\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\uff01<\/p>\n
\r\n\r\nvar items = ['\u30a4\u30c1\u30b4', '\u30e1\u30ed\u30f3', '\u30a4\u30c1\u30b4', '\u30d0\u30ca\u30ca'];\r\n\r\nvar result1 = items.indexOf( '\u30a4\u30c1\u30b4' );\r\n\r\n\/\/\u6700\u521d\u306b\u5408\u81f4\u3057\u305f\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u756a\u53f7\u306e\u6b21\u304b\u3089\u958b\u59cb\u4f4d\u7f6e\u306b\u3059\u308b\r\nvar result2 = items.indexOf( '\u30a4\u30c1\u30b4', result1 + 1 );\r\n\r\nconsole.log( result1, result2 );\r\n\r\n<\/pre>\n
\u51fa\u529b\u7d50\u679c\u306f\u2026<\/p>\n
\r\n0 2\r\n<\/pre>\n
\u3068\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u306f\u3001\u6700\u521d\u306b\u5408\u81f4\u3057\u305f\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u756a\u53f7\u306b\u300c+1\u300d\u3059\u308b\u3053\u3068\u3067\u3001\u305d\u306e\u6b21\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u756a\u53f7\u304b\u3089\u691c\u7d22\u3092\u958b\u59cb\u3059\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u3055\u3089\u306b\u3082\u3063\u3068\u591a\u304f\u306e\u914d\u5217\u3092\u6271\u3046\u5834\u5408\u306b\u306f\u3001while\u6587\u306a\u3069\u306e\u7e70\u308a\u8fd4\u3057\u51e6\u7406\u3092\u4f7f\u3063\u3066\u3001\u3059\u3079\u3066\u306e\u91cd\u8907\u8981\u7d20\u3092\u53d6\u5f97\u3059\u308b\u306e\u304c\u826f\u3044\u3067\u3057\u3087\u3046\u3002while\u6587\u306e\u7e70\u308a\u8fd4\u3057\u51e6\u7406\u306b\u3064\u3044\u3066\u306f\u3001\u6b21\u306e\u8a18\u4e8b\u3067\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u305c\u3072\u53c2\u8003\u306b\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n            \n                
\n                
\n                    
\n                    \n                    <\/div>\n                    
\n                    
\u3010JavaScript\u5165\u9580\u3011while\u6587\u3067\u30eb\u30fc\u30d7\u51e6\u7406\u3068\u5236\u5fa1(break\/continue)<\/div>\n                    
\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            \n
lastIndexOf \u3092\u4f7f\u3063\u305f\u691c\u7d22\u65b9\u6cd5\uff01<\/h3>\n
\u4eca\u5ea6\u306f\u3001\u300clastIndexOf\u300d\u306b\u3064\u3044\u3066\u5b66\u7fd2\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\uff01\u3053\u308c\u306f\u3001\u5148\u307b\u3069\u5b66\u7fd2\u3057\u305f\u300cindexOf\u300d\u3068\u307b\u3068\u3093\u3069\u540c\u3058\u306a\u306e\u3067\u3001\u3059\u3050\u306b\u7406\u89e3\u51fa\u6765\u308b\u306f\u305a\u3067\u3059\u3002\u4e00\u822c\u7684\u306a\u69cb\u6587\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\uff01<\/p>\n
\r\n\r\nvar items = \u914d\u5217\u30c7\u30fc\u30bf;\r\n\r\nitems.lastIndexOf( \u691c\u7d22\u5bfe\u8c61\u306e\u8981\u7d20, \u691c\u7d22\u958b\u59cb\u4f4d\u7f6e );\r\n\r\n<\/pre>\n
\u300cindexOf\u300d\u3068\u540c\u3058\u3088\u3046\u306b\u3001\u914d\u5217\u5185\u306e\u691c\u7d22\u3057\u305f\u3044\u8981\u7d20\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u756a\u53f7\u304c\u300c\u8fd4\u308a\u5024\u300d\u3068\u3057\u3066\u53d6\u5f97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
\u305f\u3060\u3057\u3001\u300clastIndexOf\u300d\u306f\u914d\u5217\u306e\u672b\u5c3e\u304b\u3089\u9806\u756a\u306b\u691c\u7d22\u3057\u3066\u3044\u304f\u70b9\u304c\u3001\u300cindexOf\u300d\u3068\u9055\u3046\u30dd\u30a4\u30f3\u30c8\u306b\u306a\u308a\u307e\u3059\uff01\u6b21\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u3001\u305d\u306e\u9055\u3044\u3092\u5177\u4f53\u7684\u306b\u898b\u3066\u307f\u307e\u3057\u3087\u3046\uff01<\/p>\n
\r\n\r\nvar items = ['\u30a4\u30c1\u30b4', '\u30e1\u30ed\u30f3', '\u30a4\u30c1\u30b4', '\u30d0\u30ca\u30ca'];\r\nvar result = items.lastIndexOf( '\u30a4\u30c1\u30b4' );\r\n\r\nconsole.log( result );\r\n\r\n<\/pre>\n
\u51fa\u529b\u7d50\u679c\u306f\u2026<\/p>\n
\r\n2\r\n<\/pre>\n
\u3068\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u306f\u3001\u300c\u30a4\u30c1\u30b4\u300d\u3068\u3044\u3046\u8981\u7d20\u3092\u691c\u7d22\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u914d\u5217\u5185\u306b\u306f2\u3064\u5b58\u5728\u3057\u3066\u3044\u308b\u306e\u304c\u5206\u304b\u308a\u307e\u3059\u3002\u300cindexOf\u300d\u3092\u4f7f\u3063\u3066\u3044\u308c\u3070\u8fd4\u308a\u5024\u306f\u300c0\u300d\u306b\u306a\u308a\u307e\u3059\u304c\u3001\u4eca\u56de\u306e\u300clastIndexOf\u300d\u306f\u672b\u5c3e\u304b\u3089\u9806\u756a\u306b\u691c\u7d22\u3092\u59cb\u3081\u308b\u305f\u3081\u3001\u6700\u521d\u306b\u5408\u81f4\u3059\u308b2\u756a\u76ee\u306e\u300c\u30a4\u30c1\u30b4\u300d\u3092\u691c\u51fa\u3057\u3066\u3044\u308b\u308f\u3051\u3067\u3059\u3002<\/p>\n
\u307e\u305f\u3001\u300clastIndexOf\u300d\u3082\u691c\u7d22\u306e\u958b\u59cb\u4f4d\u7f6e\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3001\u4f7f\u3044\u65b9\u3082\u300cindexOf\u300d\u3068\u540c\u3058\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3092\u4f7f\u3063\u3066\u307f\u308b\uff01<\/h2>\n
\u3053\u3053\u304b\u3089\u306f\u3001\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3092\u4f7f\u3063\u305f\u30e1\u30bd\u30c3\u30c9\u306b\u3064\u3044\u3066\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\uff01\u30e1\u30bd\u30c3\u30c9\u5185\u3067\u95a2\u6570\u304c\u6271\u3048\u308b\u305f\u3081\u3001\u3088\u308a\u4fbf\u5229\u306a\u691c\u7d22\u51e6\u7406\u3092\u884c\u3048\u308b\u306e\u304c\u7279\u5fb4\u3067\u3001\u72ec\u81ea\u306b\u30eb\u30fc\u30d7\u51e6\u7406\u3092\u69cb\u7bc9\u3057\u306a\u304f\u3066\u3082\u5168\u8981\u7d20\u306b\u305d\u308c\u305e\u308c\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u306e\u3067\u4fbf\u5229\u3067\u3059\u3002<\/p>\n
some \u3092\u4f7f\u3063\u305f\u691c\u7d22\u65b9\u6cd5\uff01<\/h3>\n
\u307e\u305a\u306f\u3001\u300csome\u300d\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u305f\u65b9\u6cd5\u304b\u3089\u5b66\u7fd2\u3057\u3066\u307f\u307e\u3057\u3087\u3046\uff01\u300csome\u300d\u3092\u4f7f\u3046\u3068\u3001\u914d\u5217\u5185\u306b\u76ee\u7684\u306e\u8981\u7d20\u304c\u5b58\u5728\u3059\u308b\u306e\u304b\u3069\u3046\u304b\u3092\u3001\u300ctrue \/ false\u300d\u3067\u53d6\u5f97\u3067\u304d\u308b\u306e\u304c\u7279\u5fb4\u3067\u3059\u3002\u4e00\u822c\u7684\u306a\u69cb\u6587\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\uff01<\/p>\n
\r\n\r\nvar items = \u914d\u5217\u30c7\u30fc\u30bf;\r\n\r\nitems.some( \u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570 );\r\n\r\n<\/pre>\n
\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u5185\u3067\u3001\u3069\u3093\u306a\u691c\u7d22\u3092\u3057\u305f\u3044\u304b\u306e\u51e6\u7406\u3092\u8a18\u8ff0\u3067\u304d\u308b\u306e\u3067\u3001\u8907\u96d1\u306a\u6761\u4ef6\u5f0f\u306b\u3088\u308b\u691c\u7d22\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u6761\u4ef6\u306b\u5408\u81f4\u3059\u308b\u8981\u7d20\u304c1\u3064\u3067\u3082\u3042\u308c\u3070\u300ctrue\u300d\u3092\u8fd4\u3059\u306e\u304c\u300csome\u300d\u306e\u5927\u304d\u306a\u7279\u5fb4\u3067\u3057\u3087\u3046\u3002\u6b21\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u3001\u4f7f\u7528\u4f8b\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\uff01<\/p>\n
\r\n\r\nvar items = ['\u30e1\u30ed\u30f3', '\u30a4\u30c1\u30b4', '\u30ea\u30f3\u30b4', '\u30d6\u30c9\u30a6'];\r\n\r\nvar result = items.some( function( value ) {\r\n\r\n    \/\/\u914d\u5217\u5185\u306b\u300c\u30a4\u30c1\u30b4\u300d\u304c\u5b58\u5728\u3059\u308b\u304b\u3069\u3046\u304b\u3092\u691c\u7d22\r\n    return value === '\u30a4\u30c1\u30b4';\r\n\r\n});\r\n\r\nconsole.log( result );\r\n\r\n<\/pre>\n
\u51fa\u529b\u7d50\u679c\u306f\u2026<\/p>\n
\r\ntrue\r\n<\/pre>\n
\u3068\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u306f\u3001\u914d\u5217\u5185\u306b\u300c\u30a4\u30c1\u30b4\u300d\u304c\u5b58\u5728\u3059\u308b\u304b\u3069\u3046\u304b\u3092\u691c\u7d22\u3057\u3001\u5408\u81f4\u3059\u308b\u8981\u7d20\u304c1\u3064\u3067\u3082\u3042\u308c\u3070\u300ctrue\u300d\u3092\u8fd4\u3057\u3066\u3044\u308b\u306e\u304c\u5206\u304b\u308a\u307e\u3059\u3002\u95a2\u6570\u5185\u306b\u6761\u4ef6\u5f0f\u3092\u8a18\u8ff0\u3067\u304d\u308b\u306e\u3067\u3001\u4f8b\u3048\u3070\u6570\u5024\u30c7\u30fc\u30bf\u3092\u683c\u7d0d\u3057\u305f\u914d\u5217\u3067\u691c\u7d22\u3059\u308b\u3068\u4fbf\u5229\u3067\u3057\u3087\u3046\u3002<\/p>\n
\r\n\r\nvar items = [109,23,542,190,320,99,245];\r\n\r\nvar result = items.some( function( value ) {\r\n\r\n    \/\/200\u4ee5\u4e0a\u306e\u6570\u5024\u304c\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u691c\u7d22\u3059\u308b\r\n    return value > 200;\r\n\r\n});\r\n\r\nconsole.log( result );\r\n\r\n<\/pre>\n
\u51fa\u529b\u7d50\u679c\u306f\u2026<\/p>\n
\r\ntrue\r\n<\/pre>\n
\u3068\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u306f\u3001\u95a2\u6570\u5185\u306e\u6761\u4ef6\u5f0f\u306b\u300cvalue > 200\u300d\u3068\u8a18\u8ff0\u3059\u308b\u3053\u3068\u3067\u3001200\u4ee5\u4e0a\u306e\u6570\u5024\u304c\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u3056\u3063\u304f\u308a\u3068\u691c\u7d22\u3067\u304d\u308b\u306e\u304c\u5206\u304b\u308a\u307e\u3059\u3002<\/p>\n
\u3082\u3061\u308d\u3093\u3001\u300cvalue > 330 && value < 400\u300d\u3068\u8a18\u8ff0\u3059\u308c\u3070\u3001330\u4ee5\u4e0a400\u672a\u6e80\u306e\u6570\u5024\u304c\u3042\u308b\u304b\u3069\u3046\u304b\uff1f\u2026\u3068\u3044\u3046\u7d30\u304b\u3044\u6761\u4ef6\u3067\u691c\u7d22\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u306a\u308f\u3051\u3067\u3059\u3002<\/p>\n
every \u3092\u4f7f\u3063\u305f\u691c\u7d22\u65b9\u6cd5\uff01<\/h3>\n
\u4eca\u5ea6\u306f\u3001\u300cevery\u300d\u30e1\u30bd\u30c3\u30c9\u3092\u5b66\u7fd2\u3057\u307e\u3057\u3087\u3046\u3002\u3053\u308c\u306f\u300csome\u300d\u3068\u4f7f\u3044\u65b9\u304c\u307b\u3068\u3093\u3069\u540c\u3058\u3067\u3059\u304c\u3001\u300cevery\u300d\u306f\u914d\u5217\u5185\u306e\u8981\u7d20\u3059\u3079\u3066\u306b\u6761\u4ef6\u304c\u5408\u81f4\u3057\u306a\u3044\u3068\u300ctrue\u300d\u3092\u8fd4\u3057\u3066\u304f\u308c\u306a\u3044\u3068\u3044\u3046\u5927\u304d\u306a\u7279\u5fb4\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
\u307e\u305a\u306f\u3001\u4e00\u822c\u7684\u306a\u69cb\u6587\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\uff01<\/p>\n
\r\n\r\nvar items = \u914d\u5217\u30c7\u30fc\u30bf;\r\n\r\nitems.every( \u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570 );\r\n\r\n<\/pre>\n
\u5185\u5bb9\u306f\u300csome\u300d\u3068\u307e\u3063\u305f\u304f\u540c\u3058\u3067\u3001\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u5185\u306b\u691c\u7d22\u3057\u305f\u3044\u8981\u7d20\u306e\u6761\u4ef6\u3092\u8a18\u8ff0\u3059\u308b\u3053\u3068\u3067\u3001\u300ctrue \/ false\u300d\u3092\u8fd4\u308a\u5024\u3068\u3057\u3066\u53d6\u5f97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u6b21\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u3001\u5177\u4f53\u7684\u306a\u4f7f\u7528\u4f8b\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\uff01<\/p>\n
\r\n\r\nvar items = [9,5,8,4,5,7];\r\n\r\nvar result = items.every( function( value ) {\r\n\r\n\/\/\u914d\u5217\u5185\u306b3\u3088\u308a\u3082\u5927\u304d\u3044\u6570\u5b57\u304c\u3042\u308b\u304b\u3092\u691c\u7d22\u3059\u308b\r\n    return value > 3;\r\n\r\n});\r\n\r\nconsole.log( result );\r\n\r\n<\/pre>\n
\u51fa\u529b\u7d50\u679c\u306f\u2026<\/p>\n
\r\ntrue\r\n<\/pre>\n
\u3068\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u306f\u3001\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u5185\u306b\u300c3\u3088\u308a\u3082\u5927\u304d\u3044\u6570\u5b57\u300d\u304c\u3042\u308b\u304b\u3092\u6761\u4ef6\u5f0f\u3068\u3057\u3066\u8a18\u8ff0\u3057\u3066\u3044\u307e\u3059\u3002\u914d\u5217\u300citems\u300d\u5185\u306b\u306f\u3001\u3059\u3079\u30663\u3088\u308a\u3082\u5927\u304d\u3044\u6570\u5b57\u306e\u8981\u7d20\u3057\u304b\u306a\u3044\u306e\u3067\u3001\u7d50\u679c\u3068\u3057\u3066\u300ctrue\u300d\u3092\u8fd4\u308a\u5024\u3068\u3057\u3066\u53d7\u3051\u53d6\u3063\u3066\u3044\u308b\u308f\u3051\u3067\u3059\u3002<\/p>\n
\u3061\u306a\u307f\u306b\u3001\u4eca\u56de\u306f\u300c\u691c\u7d22\u300d\u306e\u307f\u3092\u30c6\u30fc\u30de\u306b\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u5927\u62b5\u306e\u5834\u5408\u306f\u691c\u7d22\u3057\u305f\u5f8c\u306b\u4f55\u3089\u304b\u306e\u51e6\u7406\u3092\u5b9f\u884c\u3059\u308b\u306f\u305a\u3067\u3059\u3002<\/p>\n
\u305d\u3053\u3067\u3001\u3042\u308b\u6761\u4ef6\u3067\u691c\u7d22\u3092\u3057\u305f\u7d50\u679c\u3001\u4f55\u3089\u304b\u306e\u51e6\u7406\u3092\u540c\u6642\u306b\u884c\u3048\u308b\u4fbf\u5229\u306a\u30e1\u30bd\u30c3\u30c9\u3068\u3057\u3066\u3001\u300cfilter\u300d\u3068\u300cmap\u300d\u306e\u6d3b\u7528\u65b9\u6cd5\u3092\u6b21\u306e\u8a18\u4e8b\u3067\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u305c\u3072\u53c2\u8003\u306b\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n            \n                
\n                
\n                    
\n                    \n                    <\/div>\n                    
\n                    
\u3010JavaScript\u5165\u9580\u3011filter\u3067\u914d\u5217\u306e\u30c7\u30fc\u30bf\u3092\u62bd\u51fa\u3059\u308b\u65b9\u6cd5<\/div>\n                    
\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            \n            \n                
\n                
\n                    
\n                    \n                    <\/div>\n                    
\n                    
\u3010JavaScript\u5165\u9580\u3011\u914d\u5217\u51e6\u7406\u3092\u3059\u308bmap()\u306e\u4f7f\u3044\u65b9\u3068Map\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u89e3\u8aac\uff01<\/div>\n                    
\u66f4\u65b0\u65e5\uff1a2024\u5e745\u67086\u65e5<\/div>\n                    <\/div>\n                <\/div>\n                <\/div>\n            <\/a>\n            \n
\u307e\u3068\u3081<\/h2>\n
\u4eca\u56de\u306f\u3001\u914d\u5217\u306e\u8981\u7d20\u3092\u52b9\u7387\u3088\u304f\u300c\u691c\u7d22\u300d\u3067\u304d\u308b\u30e1\u30bd\u30c3\u30c9\u306b\u3064\u3044\u3066\u5b66\u7fd2\u3057\u307e\u3057\u305f\uff01\u3082\u3046\u4e00\u5ea6\u3001\u30dd\u30a4\u30f3\u30c8\u3092\u304a\u3055\u3089\u3044\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\uff01<\/p>\n
\n
    \n
  • indexOf<\/b><\/li>\n
    \u691c\u7d22\u5bfe\u8c61\u306e\u8981\u7d20\u3092\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u756a\u53f7\u3067\u53d6\u5f97\u3067\u304d\u308b\uff01<\/p>\n
  • lastIndexOf<\/b><\/li>\n
    \u5bfe\u8c61\u914d\u5217\u306e\u672b\u5c3e\u304b\u3089\u691c\u7d22\u3057\u3066\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u756a\u53f7\u3092\u53d6\u5f97\u3059\u308b\uff01<\/p>\n
  • some<\/b><\/li>\n
    \u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3067\u6307\u5b9a\u3057\u305f\u6761\u4ef6\u306b1\u3064\u3067\u3082\u5408\u81f4\u3059\u308b\u8981\u7d20\u304c\u3042\u308b\u304b\u3092\u691c\u7d22\u3059\u308b\uff01<\/p>\n
  • every<\/b><\/li>\n
    \u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3067\u6307\u5b9a\u3057\u305f\u6761\u4ef6\u306b\u3059\u3079\u3066\u5408\u81f4\u3059\u308b\u8981\u7d20\u304c\u3042\u308b\u304b\u3092\u691c\u7d22\u3059\u308b\uff01\n<\/ul>\n<\/div>\n
    \u3053\u308c\u3089\u306e\u5185\u5bb9\u3092\u8e0f\u307e\u3048\u3066\u3001\u305c\u3072\u81ea\u5206\u3067\u3082\u5b9f\u969b\u306b\u30b3\u30fc\u30c9\u3092\u66f8\u3044\u3066\u3069\u306e\u3088\u3046\u306a\u51fa\u529b\u7d50\u679c\u304c\u8868\u793a\u3055\u308c\u308b\u304b\u3092\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u3053\u3093\u306b\u3061\u306f\u3001\u30e9\u30a4\u30bf\u30fc\u306e\u30de\u30b5\u30c8\u3067\u3059\uff01 \u4eca\u56de\u306f\u3001\u914d\u5217\u306e\u8981\u7d20\u3092\u691c\u7d22\u3059\u308b\u6642\u306b\u4fbf\u5229\u306a\u30e1\u30bd\u30c3\u30c9\u3092\u3054\u7d39\u4ecb\u81f4\u3057\u307e\u3059\uff01JavaScript\u306b\u304a\u3051\u308b\u914d\u5217\u64cd\u4f5c\u3067\u306f\u3001\u7279\u5b9a\u306e\u8981\u7d20\u3060\u3051\u3092\u63a2\u3057\u51fa\u3057\u3066\u62bd\u51fa\u3059\u308b\u30b1\u30fc\u30b9\u304c\u5c11\u306a\u304f\u3042\u308a\u307e\u305b\u3093\u3002 \u666e\u901a\u306b\u30d7\u30ed\u30b0\u30e9\u30e0 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