{"id":1073,"date":"2023-01-29T20:58:09","date_gmt":"2023-01-29T11:58:09","guid":{"rendered":"http:\/\/attacktube.com\/?p=1073"},"modified":"2023-01-29T21:13:50","modified_gmt":"2023-01-29T12:13:50","slug":"%e3%80%90javascript%e3%80%91string-matchregexp%e3%81%a8regexp-execstring%e3%81%a7%e6%ad%a3%e8%a6%8f%e8%a1%a8%e7%8f%be%e3%81%abg%e3%83%95%e3%83%a9%e3%82%b0%e3%81%8c%e3%82%bb%e3%83%83%e3%83%88","status":"publish","type":"post","link":"https:\/\/attacktube.com\/?p=1073","title":{"rendered":"\u3010JavaScript\u3011string.match(regexp)\u3068regexp.exec(string)\u3067\u6b63\u898f\u8868\u73fe\u306bg\u30d5\u30e9\u30b0\u304c\u30bb\u30c3\u30c8\u3055\u308c\u3066\u3044\u305f\u5834\u5408"},"content":{"rendered":"\n

regexp.exec(string)\u306b\u304a\u3044\u3066\u3001g\u30d5\u30e9\u30b0\u304c\u30bb\u30c3\u30c8\u3055\u308c\u3066\u3044\u305f\u5834\u5408\u3001\u691c\u7d22\u304c\u6587\u5b57\u5217\u306e\u5148\u982d\u304b\u3089\u884c\u308f\u308c\u308b\u306e\u3067\u306f\u306a\u304fregexp.lastIndex\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u5834\u6240\u304b\u3089\u884c\u308f\u308c\u308b\u3088\u3046\u306b\u306a\u308b(\u3053\u306e\u5024\u306f\u6700\u521d\u306f0\u306b\u30bb\u30c3\u30c8\u3055\u308c\u3066\u3044\u308b)\u3002\u3082\u3057\u30de\u30c3\u30c1\u304c\u6210\u529f\u3057\u305f\u5834\u5408\u3001regexp.lastIndex\u306f\u30de\u30c3\u30c1\u3057\u305f\u5834\u6240\u306e\u6b21\u306e\u6587\u5b57\u306e\u5834\u6240\u306b\u30bb\u30c3\u30c8\u3055\u308c\u308b\u3002\u3082\u3057\u30de\u30c3\u30c1\u304c\u5931\u6557\u3057\u305f\u5834\u5408\u306f0\u306b\u30ea\u30bb\u30c3\u30c8\u3055\u308c\u308b\u3002
\u3053\u308c\u3092\u5229\u7528\u3059\u308c\u3070\u3001\u30eb\u30fc\u30d7\u306e\u4e2d\u3067exec\u3092\u540c\u3058\u6587\u5b57\u5217\u306b\u5bfe\u3057\u3066\u4f55\u5ea6\u3082\u547c\u3073\u51fa\u3059\u3053\u3068\u3067\u3001\u6587\u5b57\u5217\u4e2d\u306b\u8907\u6570\u5b58\u5728\u3059\u308b\u30d1\u30bf\u30fc\u30f3\u3092\u3059\u3079\u3066\u63a2\u3057\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u3002

string.match(regexp)\u306b\u304a\u3044\u3066\u3001g\u30d5\u30e9\u30b0\u304c\u30bb\u30c3\u30c8\u3055\u308c\u3066\u3044\u305f\u5834\u5408\u3001\u3053\u306e\u30e1\u30bd\u30c3\u30c9\u306f\u3059\u3079\u3066\u306e\u30de\u30c3\u30c1\u7d50\u679c\u3092\u914d\u5217\u3067\u8fd4\u3059\u304c\u3001\u30ad\u30e3\u30d7\u30c1\u30e3\u30b0\u30eb\u30fc\u30d7\u306b\u3088\u308b\u30ad\u30e3\u30d7\u30c1\u30e3\u7d50\u679c\u306f\u53d6\u5f97\u3067\u304d\u306a\u304f\u306a\u308b\u3002<\/p>\n\n\n\n\n\n\n\n

\n\nvar text = '<html><body bgcolor=linen><p>This is <b>bold<\\\/b>!<\\\/p><\\\/body><\\\/html>';\nvar regexp = \/[^<>]+|<(\\\/?)([A-Za-z]+)([^<>]*)>\/g;\nvar a, i;\n\nconsole.log(\"regexp.lastIndex = \" + regexp.lastIndex);\n\nwhile ((a = regexp.exec(text))) {\n    console.log(\"regexp.lastIndex = \" + regexp.lastIndex);\n    \n    for (i = 0; i < a.length; i += 1) {\n        console.log(('[' + i + '] ' + a[i]));\n    }\n    console.log(\" \");\n}\n\nconsole.log(\"-----\");\n\na = text.match(regexp);\n\nfor (i = 0; i < a.length; i += 1) {\n\tconsole.log(('[' + i + '] ' + a[i]));\n}\n\n\/*\nregexp.lastIndex = 0\nregexp.lastIndex = 6\n[0] <html>\n[1]\n[2] html\n[3]\n\nregexp.lastIndex = 26\n[0] <body bgcolor=linen>\n[1]\n[2] body\n[3]  bgcolor=linen\n\nregexp.lastIndex = 29\n[0] <p>\n[1]\n[2] p\n[3]\n\nregexp.lastIndex = 37\n[0] This is\n[1] undefined\n[2] undefined\n[3] undefined\n\nregexp.lastIndex = 40\n[0] <b>\n[1]\n[2] b\n[3]\n\nregexp.lastIndex = 44\n[0] bold\n[1] undefined\n[2] undefined\n[3] undefined\n\nregexp.lastIndex = 48\n[0] <\/b>\n[1] \/\n[2] b\n[3]\n\nregexp.lastIndex = 49\n[0] !\n[1] undefined\n[2] undefined\n[3] undefined\n\nregexp.lastIndex = 53\n[0] <\/p>\n[1] \/\n[2] p\n[3]\n\nregexp.lastIndex = 60\n[0] <\/body>\n[1] \/\n[2] body\n[3]\n\nregexp.lastIndex = 67\n[0] <\/html>\n[1] \/\n[2] html\n[3]\n\n-----\n[0] <html>\n[1] <body bgcolor=linen>\n[2] <p>\n[3] This is\n[4] <b>\n[5] bold\n[6] <\/b>\n[7] !\n[8] <\/p>\n[9] <\/body>\n[10] <\/html>\n\n*\/\n\n<\/code><\/pre>\n\n\n\n
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