譛ｬ鬆√�逶ｮ谺｡ 逶ｮ谺｡ 谺｡鬆�: 15-11_Error_Objects 蜑埼��: 15-9_Date_Objects
RegExp 繧ｪ繝悶ず繧ｧ繧ｯ繝医�縲∵ｭ｣隕剰｡ｨ迴ｾ縺ｨ髢｢騾｣縺吶ｋ繝輔Λ繧ｰ縺ｧ讒区�縺輔ｌ繧九�
NOTE 豁｣隕剰｡ｨ迴ｾ縺ｮ譖ｸ蠑上→讖溯�縺ｯ縲� Perl5 繝励Ο繧ｰ繝ｩ繝溘Φ繧ｰ險隱槭�豁｣隕剰｡ｨ迴ｾ繧呈ｨ｡縺励※菴懊ｉ繧後ｋ縲�
RegExp 繧ｳ繝ｳ繧ｹ繝医Λ繧ｯ繧ｿ縺ｯ縲∝�蜉帙ヱ繧ｿ繝ｼ繝ｳ譁�ｭ怜�縺ｫ荳玖ｨ倥�譁�ｳ輔ｒ驕ｩ逕ｨ縺吶ｋ縲よ枚豕輔′譁�ｭ怜�繧� Pattern 縺ｮ 螻暮幕縺ｨ縺励※隗｣驥医〒縺阪↑縺代ｌ縺ｰ縲√お繝ｩ繝ｼ縺檎匱逕溘☆繧九�
豁｣隕剰｡ｨ迴ｾ繝代ち繝ｼ繝ｳ縺ｯ縲∽ｸ九↓霑ｰ縺ｹ繧句�逅�ｒ逕ｨ縺�ｋ蜀�Κ髢｢謨ｰ縺ｫ螟画鋤縺輔ｌ繧九ょｮ溯｣��縲∝酔縺倡ｵ先棡繧貞ｾ励ｉ繧後ｋ縺ｪ繧峨�縲∽ｸ九↓霑ｰ縺ｹ繧九ｂ縺ｮ繧医ｊ繧ゅｈ繧雁柑邇��縺�＞繧｢繝ｫ繧ｴ繝ｪ繧ｺ繝�縺ｮ莉墓ｧ倥′謗ｨ螂ｨ縺輔ｌ繧九�
莉･荳九�隱ｬ譏弱〒縺ｯ縲∵ｬ｡縺ｮ螟画焚繧堤畑縺�ｋ:
縺輔ｉ縺ｫ縲∽ｻ･荳九�隱ｬ譏弱〒縺ｯ縲∵ｬ｡縺ｮ蜀�Κ繝��繧ｿ讒矩�繧堤畑縺�ｋ:
boolean 繧定ｿ斐☆縲� assertion 繝�せ繧ｿ繝ｼ縺ｯ縲∝�蜉帶枚蟄怜�縺ｮ迴ｾ蝨ｨ縺ｮ菴咲ｽｮ縺ｫ蟇ｾ縺吶ｋ迚ｹ谿頑擅莉ｶ (繧ｯ繝ｭ繝ｼ繧ｸ繝｣縺ｮ邨仙粋貂医∩蠑墓焚縺ｧ迚ｹ螳壹＆繧後ｋ) 繧偵ユ繧ｹ繝医＠縲∵擅莉ｶ縺ｫ繝槭ャ繝√☆繧後� true 縲√�繝�メ縺励↑縺代ｌ縺ｰ false 繧定ｿ斐☆縲�逕滓�隕丞援 Pattern :: Disjunction 縺ｯ縲∵ｬ｡縺ｮ繧医≧縺ｫ隧穂ｾ｡縺輔ｌ繧�:
蜿り�ュ蝣ｱ隗｣隱ｬ (Informative comment): Pattern 縺ｯ蜀�Κ髢｢謨ｰ蛟､縺ｫ隧穂ｾ｡ ("繧ｳ繝ｳ繝代う繝ｫ") 縺輔ｌ繧九� RegExp.prototype.exec 縺後％縺ｮ髢｢謨ｰ繧帝←逕ｨ縺ｧ縺阪ｋ縺ｮ縺ｯ縲∵枚蟄怜�縺ｨ縲∵枚蟄怜�蜀�Κ縺ｮ繧ｪ繝輔そ繝�ヨ縺ｧ縲√◎繧後�譁�ｭ怜�蜀�Κ縺ｮ縺昴�蜴ｳ蟇�↑繧ｪ繝輔そ繝�ヨ縺ｧ髢句ｧ九＠縺ｦ繝代ち繝ｼ繝ｳ縺後�繝�メ縺ｧ縺阪ｋ縺九←縺�°繧呈ｱｺ螳壹☆繧九ｂ縺ｮ縺ｧ縺ゅｋ縲� 縺昴＠縺ｦ縲√�繝�メ縺吶ｋ縺ｪ繧峨�縲√◎繧後�謐墓拷諡ｬ蠑ｧ縺ｮ蛟､縺ｨ縺ｪ繧九ｂ縺ｮ縺ｧ縺ゅｋ縲� 繧ｻ繧ｯ繧ｷ繝ｧ繝ｳ 15.10.2 縺ｮ繧｢繝ｫ繧ｴ繝ｪ繧ｺ繝�縺ｯ縲√さ繝ｳ繝代う繝ｫ縺吶ｋ繝代ち繝ｼ繝ｳ縺御ｾ句､� SyntaxError 繧呈兜縺偵※繧ゅｈ縺�ｈ縺�↓險ｭ險医＆繧後ｋ; 荳譁ｹ縲√ヱ繧ｿ繝ｼ繝ｳ縺御ｸ譌ｦ繧ｳ繝ｳ繝代う繝ｫ縺輔ｌ繧九→縲∵枚蟄怜�蜀��繝槭ャ繝√ｒ讀懃ｴ｢縺吶ｋ邨先棡縺ｮ髢｢謨ｰ縺ｮ驕ｩ逕ｨ縺ｯ縲∽ｾ句､悶ｒ謚輔￡繧九％縺ｨ縺悟�譚･縺ｪ縺� (out-of-memory 縺ｪ縺ｩ縲√←縺薙〒繧ら匱逕溘＠縺�ｋ莉ｻ諢上�繝帙せ繝亥ｮ夂ｾｩ縺ｮ萓句､悶ｒ髯､縺�)縲�
逕滓�隕丞援 Disjunction :: Alternative 縺ｮ隧穂ｾ｡縺ｯ縲� Alternative 繧定ｩ穂ｾ｡縺励※蜿門ｾ励＠縺� Matcher 繧定ｿ斐☆縲�
逕滓�隕丞援 Disjunction :: Alternative | Disjunction 縺ｯ縲∵ｬ｡縺ｮ繧医≧縺ｫ隧穂ｾ｡縺輔ｌ繧�:
蜿り�ュ蝣ｱ隗｣隱ｬ: 豁｣隕剰｡ｨ迴ｾ貍皮ｮ怜ｭ� | 縺ｯ 2 蛟九�莉｣譖ｿ繧貞玄蛻�ｋ縲ゅヱ繧ｿ繝ｼ繝ｳ縺ｯ縺ｾ縺壼ｷｦ縺ｮ Alternative (蠕後↓豁｣隕剰｡ｨ迴ｾ縺檎ｶ壹￥) 縺ｮ繝槭ャ繝√ｒ隧ｦ陦後☆繧�; 螟ｱ謨励＠縺溘↑繧峨�縲∝承縺ｮ Disjunction (蠕後↓豁｣隕剰｡ｨ迴ｾ縺檎ｶ壹￥) 縺ｮ繝槭ャ繝√ｒ隧ｦ陦後☆繧九ょｷｦ縺ｮ Alternative, 蜿ｳ縺ｮ Disjunction, 邯壹″蜈ｨ縺ｦ縺碁∈謚樒せ繧呈戟縺､縺ｪ繧峨�縲∫ｶ壹″縺ｮ蜈ｨ縺ｦ縺ｮ驕ｸ謚櫁い縺ｯ蟾ｦ縺ｮ Alternative 蜀��谺｡縺ｮ驕ｸ謚櫁い荳翫∈縺ｮ遘ｻ蜍募燕縺ｫ隧ｦ陦後＆繧後ｋ縲ょｷｦ縺ｮ Alternative 蜀��驕ｸ謚櫁い繧剃ｽｿ縺��縺｣縺溘↑繧峨�縲∝承縺ｮ Disjunction 縺悟ｷｦ縺ｮ Alternative 縺ｮ莉｣繧上ｊ縺ｫ隧ｦ陦後＆繧後ｋ縲� | 縺ｫ繧医ｊ繧ｹ繧ｭ繝��縺輔ｌ縺溘ヱ繧ｿ繝ｼ繝ｳ謌仙�蜀�Κ縺ｮ莉ｻ諢上�謐墓拷諡ｬ蠑ｧ縺ｯ縲∵枚蟄怜�縺ｮ莉｣繧上ｊ縺ｫ undefined 蛟､繧堤函謌舌☆繧九ゅ▽縺ｾ繧翫∽ｾ九∴縺ｰ
/a|ab/.exec("abc")
縺ｯ邨先棡 "a" 繧定ｿ斐＠縲� "ab" 縺ｯ霑斐＆縺ｪ縺�ゅｂ縺｣縺ｨ險縺医�
/((a)|(ab))((c)|(bc))/.exec("abc")
縺ｯ莉･荳九�驟榊�
["abc", "a", "a", undefined, "bc", undefined, "bc"]
繧定ｿ斐＠縲�
["abc", "ab", undefined, "ab", "c", "c", undefined]
縺ｯ霑斐＆縺ｪ縺��
逕滓�隕丞援 Alternative :: [empty] 縺ｮ隧穂ｾ｡縺ｯ縲｀atcher 繧定ｿ斐☆縲ゅ％縺ｮ Matcher 縺ｯ 2 蛟九�蠑墓焚 State x 縺ｨ Continuation c 繧偵→繧翫� c(x) 縺ｮ邨先棡繧定ｿ斐☆縲�
逕滓�隕丞援 Alternative :: Alternative Term 縺ｯ縲∵ｬ｡縺ｮ繧医≧縺ｫ隧穂ｾ｡縺輔ｌ繧�:
蜿り�ュ蝣ｱ隗｣隱ｬ: 騾｣邯壹☆繧� Term 縺ｯ縲∝�蜉帶枚蟄怜�縺ｮ騾｣邯壹☆繧矩Κ蛻��蜷梧凾繝槭ャ繝√ｒ隧ｦ縺ｿ繧九� 蟾ｦ縺ｮ Alternative, 蜿ｳ縺ｮ Term, 邯壹″縺ｮ豁｣隕剰｡ｨ迴ｾ縺ｮ蜈ｨ縺ｦ縺碁∈謚槭�繧､繝ｳ繝医ｒ謖√▽縺ｪ繧峨�縲� 邨先棡縺ｮ蜈ｨ驕ｸ謚櫁い縺悟承縺ｮ Term 縺ｮ谺｡縺ｮ驕ｸ謚櫁い縺ｫ遘ｻ蜍輔☆繧句燕縺ｫ讀懈渊縺輔ｌ縲� 蜿ｳ縺ｮ Term 縺ｮ蜈ｨ縺ｦ縺ｮ驕ｸ謚櫁い縺悟ｷｦ縺ｮ Alternative 縺ｮ谺｡縺ｮ驕ｸ謚櫁い縺ｫ遘ｻ蜍輔☆繧句燕縺ｫ讀懈渊縺輔ｌ繧九�
逕滓�隕丞援 Term :: Assertion 縺ｮ隧穂ｾ｡縺ｯ 2 蛟九�蠑墓焚 State x 縺ｨ a Continuation c 繧貞叙繧句�驛ｨ Matcher 繧ｯ繝ｭ繝ｼ繧ｸ繝｣ 繧定ｿ斐☆縲ゅ％縺ｮ繧ｯ繝ｭ繝ｼ繧ｸ繝｣縺ｯ谺｡繧貞ｮ溯｡後☆繧�:
boolean 蛟､繧� r 縺ｨ縺吶ｋ縲�逕滓�隕丞援 Term :: Atom 縺ｮ隧穂ｾ｡縺ｯ縲� Atom 繧定ｩ穂ｾ｡縺励※ Matcher 繧貞叙蠕励＠縲√◎縺ｮ Matcher 繧定ｿ斐☆縲�
逕滓�隕丞援 Term :: Atom Quantifier 縺ｯ縲∵ｬ｡縺ｮ繧医≧縺ｫ隧穂ｾ｡縺輔ｌ繧�:
boolean 蛟､ greedy 繧貞叙蠕励☆繧九�蜀�Κ陬懷勧髢｢謨ｰ RepeatMatcher 縺ｯ 8 蛟九�繝代Λ繝｡繧ｿ: Matcher m, 謨ｴ謨ｰ min, 謨ｴ謨ｰ (or ∞) max, boolean 蛟､ greedy, State x, Continuation c, 謨ｴ謨ｰ parenIndex, 謨ｴ謨ｰ parenCount, 繧貞叙繧九ゅ◎縺励※谺｡縺ｮ繧医≧縺ｫ謖ｯ闊槭≧:
蜿り�ュ蝣ｱ隗｣隱ｬ: Quantifier 縺ｮ邯壹￥ Atom 縺ｯ縲� Quantifier 縺ｧ謖�ｮ壹＆繧後◆蝗樊焚縺�縺醍ｹｰ繧願ｿ斐＆繧後ｋ縲る㍼謖�ｮ壼ｭ舌�雋ｪ谺ｲ縺ｧ縺ｪ縺上☆繧九％縺ｨ繧ゅ〒縺阪ｋ縲ゅ◎縺ｮ蝣ｴ蜷医∵峩縺ｪ繧句ｾ檎ｶ壹�繝槭ャ繝√ｒ陦後≧縺�∴縺ｧ Atom 繝代ち繝ｼ繝ｳ縺ｮ郢ｰ霑斐＠蝗樊焚縺ｯ蜿ｯ閭ｽ縺ｪ髯舌ｊ蟆代↑縺�ゅ∪縺溯ｲｪ谺ｲ縺ｫ縺吶ｋ縺薙→繧ゅ〒縺阪ｋ縲ゅ◎縺ｮ蝣ｴ蜷医� Atom 繝代ち繝ｼ繝ｳ縺ｯ蠕檎ｶ壹�繝槭ャ繝√↓蜿ｯ閭ｽ縺ｪ髯舌ｊ螟壹￥縺ｮ蝗樊焚郢ｰ繧願ｿ斐＆繧後ｋ縲ゅ�繝�メ繧定｡後≧蜈･蜉帶枚蟄怜�繧医ｊ繧ゅ�縺励ｍ Atom 繝代ち繝ｼ繝ｳ縺檎ｹｰ繧願ｿ斐＆繧後√＠縺溘′縺｣縺ｦ Atom 縺ｮ逡ｰ縺ｪ繧句渚蠕ｩ縺ｯ縲∫焚縺ｪ繧句�蜉幃Κ蛻�枚蟄怜�縺ｨ繝槭ャ繝√〒縺阪ｋ縲�
Atom 縺ｨ邯壹″縺ｮ豁｣隕剰｡ｨ迴ｾ縺後☆縺ｹ縺ｦ驕ｸ謚樒せ繧呈戟縺､蝣ｴ蜷医� Atom 縺ｯ縺ｾ縺壼庄閭ｽ縺ｪ髯舌ｊ螟壹￥(譛遏ｭ繝槭ャ繝√〒縺ｯ蟆代↑縺�) 縺ｮ繝槭ャ繝√ｒ陦後≧縲らｶ壹″縺ｮ蜈ｨ驕ｸ謚櫁い縺ｯ縲∵怙蠕後� Atom 蜿榊ｾｩ荳ｭ縺ｧ縺ｮ谺｡縺ｮ驕ｸ謚櫁い荳翫↓遘ｻ蜍輔☆繧句燕縺ｫ縲∬ｩｦ陦後＆繧後ｋ縲よ怙蠕� (n 逡ｪ逶ｮ) 縺ｮ Atom 蜿榊ｾｩ縺ｮ蜈ｨ驕ｸ謚櫁い縺ｯ縲∵怙蠕後°繧我ｸ縺､蜑� (n-1 逡ｪ逶ｮ) 縺ｮ Atom 蜿榊ｾｩ荳ｭ縺ｧ縺ｮ谺｡縺ｮ驕ｸ謚櫁い荳翫↓遘ｻ蜍輔☆繧句燕縺ｫ縲∬ｩｦ陦後＆繧後ｋ; 縺昴�譎らせ縺ｧ縲√ｈ繧雁､壹￥縺ｮ縲√∪縺溘�繧医ｊ蟆代↑縺� Atom 縺ｮ蜿榊ｾｩ縺御ｻ雁ｺｦ縺ｯ蜿ｯ閭ｽ縺ｧ縺ゅｋ縺薙→縺悟愛譏弱☆繧九°繧ゅ＠繧後↑縺�; (n-1) 逡ｪ逶ｮ縺ｮ Atom 縺ｮ蜿榊ｾｩ縺ｮ荳ｭ縺ｮ谺｡縺ｮ驕ｸ謚櫁い荳翫↓遘ｻ蜍輔☆繧句燕縺ｫ縲�(蜿ｯ閭ｽ縺ｪ髯舌ｊ蟆代↑縺上√∪縺溘�蜿ｯ閭ｽ縺ｪ髯舌ｊ螟壹￥縺ｮ縺�★繧後°縺ｧ蜀埼幕縺�)縲∽ｽｿ縺�ｰｽ縺上＆繧後ｋ縲�
/a[a-z]{2,4}/.exec("abcdefghi")
縺� "abcde" 繧定ｿ斐☆縺薙→縺ｫ霈�∋縺ｦ縲�
/a[a-z]{2,4}?/.exec("abcdefghi")
縺ｯ "abc" 繧定ｿ斐☆縲�
縺ｾ縺溘�
/(aa|aabaac|ba|b|c)*/.exec("aabaac")
荳翫�鬆��驕ｸ謚樒せ縺ｫ繧医ｋ豁｣隕剰｡ｨ迴ｾ縺ｯ
["aaba", "ba"]
縺ｨ縺�≧驟榊�繧定ｿ斐＠縲�
["aabaac", "aabaac"] ["aabaac", "c"]
縺ｨ縺ｯ縺ｪ繧峨↑縺��
荳願ｨ倥�驕ｸ謚樒せ縺ｮ鬆�ｺ上�縲�2 謨ｰ縺ｮ譛螟ｧ蜈ｬ邏�焚(蜊倬��｡ｨ險倥〒陦ｨ縺�)繧堤ｮ怜�縺吶ｋ豁｣隕剰｡ｨ迴ｾ縺ｮ險倩ｿｰ縺ｫ繧ゆｽｿ逕ｨ縺ｧ縺阪ｋ縲よｬ｡縺ｮ萓九�縲�10 縺ｨ 15 縺ｮ譛螟ｧ蜈ｬ邏�焚繧堤ｮ怜�縺吶ｋ:
"aaaaaaaaaa,aaaaaaaaaaaaaaa".replace(/^(a+)\1*,\1+$/,"$1")
縺薙ｌ縺ｯ蜊倬��｡ｨ險倥�譛螟ｧ蜈ｬ邏�焚 "aaaaa" 繧定ｿ斐☆縲�
繧ｹ繝�ャ繝� 4 縺ｮ RepeatMatcher 縺ｯ縲� Atom 縺檎ｹｰ繧願ｿ斐＆繧後ｋ縺溘�縺ｫ Atom 縺ｮ captures 繧偵け繝ｪ繧｢縺吶ｋ縲� 縺薙ｌ縺ｯ谺｡縺ｮ豁｣隕剰｡ｨ迴ｾ縺ｮ謖ｯ繧玖�縺�↓隕九ｋ縺薙→縺後〒縺阪ｋ:
/(z)((a+)?(b+)?(c))*/.exec("zaacbbbcac")
縺薙ｌ縺ｯ谺｡縺ｮ驟榊�繧定ｿ斐＠:
["zaacbbbcac", "z", "ac", "a", undefined, "c"]
谺｡縺ｮ繧医≧縺ｪ繧ゅ�縺ｧ縺ｯ縺ｪ縺��
["zaacbbbcac", "z", "ac", "a", "bbb", "c"]
譛繧ょ､門�縺ｮ * 縺ｮ蜷�渚蠕ｩ縺後√％縺ｮ蝣ｴ蜷� 2 逡ｪ逶ｮ, 3 逡ｪ逶ｮ, 4 逡ｪ逶ｮ縺ｧ縺ゅｋ謐墓拷譁�ｭ怜�繧貞性繧縲∵焚驥丞喧縺輔ｌ縺� Atom 縺ｫ蜷ｫ縺ｾ繧後※縺�◆蜈ｨ縺ｦ縺ｮ謐墓拷縺輔ｌ縺滓枚蟄怜�繧偵け繝ｪ繧｢縺吶ｋ縺溘ａ縺ｧ縺ゅｋ縲�
繧ｹ繝�ャ繝� 1 縺ｮ RepeatMatcher 縺ｮ繧ｯ繝ｭ繝ｼ繧ｸ繝｣ d 縺ｯ縲∽ｸ譌ｦ譛蟆丞渚蠕ｩ謨ｰ縺梧ｺ縺溘＆繧後◆繧峨◎繧御ｻ･荳顔ｩｺ譁�ｭ怜�縺ｫ繝槭ャ繝√☆繧� Atom 縺ｮ螻暮幕繧呈峩縺ｫ蜿榊ｾｩ縺吶ｋ縺溘ａ縺ｫ閠�∴縺ｪ縺�％縺ｨ繧貞ｮ｣險縺吶ｋ縲ゅ％繧後�豁｣隕剰｡ｨ迴ｾ繧ｨ繝ｳ繧ｸ繝ｳ縺後ヱ繧ｿ繝ｼ繝ｳ縺ｮ辟｡髯舌Ν繝ｼ繝励↓髯･繧九％縺ｨ繧帝亟縺�〒縺翫ｊ縲∵ｬ｡縺ｮ繧医≧縺ｪ豁｣隕剰｡ｨ迴ｾ縺ｯ:
/(a*)*/.exec("b")
縺ｾ縺溯凶蟷ｲ隍�尅縺ｫ縺ｯ谺｡縺ｮ繧医≧縺ｪ繧ゅ�縺ｯ:
/(a*)b\1+/.exec("baaaac")
縺薙ｌ繧峨�谺｡縺ｮ驟榊�繧定ｿ斐☆:
["b", ""]
逕滓�隕丞援 Assertion :: ^ 縺ｮ隧穂ｾ｡縺ｯ縲∝�驛ｨ AssertionTester 繧ｯ繝ｭ繝ｼ繧ｸ繝｣繧定ｿ斐☆縲ゅ％繧後�蠑墓焚縺ｫ State x 繧貞叙繧翫∵ｬ｡繧貞ｮ溯｡後☆繧�:
逕滓�隕丞援 Assertion :: $ 縺ｮ隧穂ｾ｡縺ｯ縲∝�驛ｨ AssertionTester 繧ｯ繝ｭ繝ｼ繧ｸ繝｣繧定ｿ斐☆縲ゅ％繧後�蠑墓焚縺ｫ State x 繧貞叙繧翫∵ｬ｡繧貞ｮ溯｡後☆繧�:
逕滓�隕丞援 Assertion :: \ b 縺ｮ隧穂ｾ｡縺ｯ縲∝�驛ｨ AssertionTester 繧ｯ繝ｭ繝ｼ繧ｸ繝｣繧定ｿ斐☆縲ゅ％繧後�蠑墓焚縺ｫ State x 繧貞叙繧翫∵ｬ｡繧貞ｮ溯｡後☆繧�:
boolean 蛟､繧� a 縺ｨ縺吶ｋ縲�boolean 蛟､繧� b 縺ｨ縺吶ｋ縲�逕滓�隕丞援 Assertion :: \ B 縺ｮ隧穂ｾ｡縺ｯ縲∝�驛ｨ AssertionTester 繧ｯ繝ｭ繝ｼ繧ｸ繝｣繧定ｿ斐☆縲ゅ％繧後�蠑墓焚縺ｫ State x 繧貞叙繧翫∵ｬ｡繧貞ｮ溯｡後☆繧�:
boolean 蛟､繧� a 縺ｨ縺吶ｋ縲�boolean 蛟､繧� b 縺ｨ縺吶ｋ縲�蜀�Κ陬懷勧髢｢謨ｰ IsWordChar 縺ｯ謨ｴ謨ｰ繝代Λ繝｡繝ｼ繧ｿ e 繧偵→繧翫∵ｬ｡繧貞ｮ溯｡後☆繧�:
a b c d e f g h i j k l m n o p q r s t u v w x y z
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
0 1 2 3 4 5 6 7 8 9 _
逕滓�隕丞援 Quantifier :: QuantifierPrefix 縺ｯ縲∵ｬ｡縺ｮ繧医≧縺ｫ隧穂ｾ｡縺輔ｌ繧�:
逕滓�隕丞援 Quantifier :: QuantifierPrefix ? 縺ｯ縲∵ｬ｡縺ｮ繧医≧縺ｫ隧穂ｾ｡縺輔ｌ繧�:
逕滓�隕丞援 QuantifierPrefix :: * 縺ｮ隧穂ｾ｡縺ｯ縲� 2 蛟九�邨先棡 0 縺ｨ ∞ 繧定ｿ斐☆縲�
逕滓�隕丞援 QuantifierPrefix :: + 縺ｮ隧穂ｾ｡縺ｯ縲� 2 蛟九�邨先棡 1 縺ｨ ∞ 繧定ｿ斐☆縲�
逕滓�隕丞援 QuantifierPrefix :: ? 縺ｮ隧穂ｾ｡縺ｯ縲� 2 蛟九�邨先棡 0 縺ｨ 1 繧定ｿ斐☆縲�
逕滓�隕丞援 QuantifierPrefix :: { DecimalDigits } 縺ｯ縲∵ｬ｡縺ｮ繧医≧縺ｫ隧穂ｾ｡縺輔ｌ繧�:
逕滓�隕丞援 QuantifierPrefix :: { DecimalDigits , } 縺ｯ縲∵ｬ｡縺ｮ繧医≧縺ｫ隧穂ｾ｡縺輔ｌ繧�:
逕滓�隕丞援 QuantifierPrefix :: { DecimalDigits , DecimalDigits } 縺ｯ縲∵ｬ｡縺ｮ繧医≧縺ｫ隧穂ｾ｡縺輔ｌ繧�:
逕滓�隕丞援 Atom :: PatternCharacter 縺ｯ縲∵ｬ｡縺ｮ繧医≧縺ｫ隧穂ｾ｡縺輔ｌ繧�:
逕滓�隕丞援 Atom :: . 縺ｯ縲∵ｬ｡縺ｮ繧医≧縺ｫ隧穂ｾ｡縺輔ｌ繧�:
逕滓�隕丞援 Atom :: \ AtomEscape 縺ｮ隧穂ｾ｡縺ｯ縲� AtomEscape 繧定ｩ穂ｾ｡縺励※ Matcher 繧貞叙蠕励＠縲√◎縺ｮ Matcher 繧定ｿ斐☆縲�
逕滓�隕丞援 Atom :: CharacterClass 縺ｯ縲∵ｬ｡縺ｮ繧医≧縺ｫ隧穂ｾ｡縺輔ｌ繧�:
boolean 蛟､ invert 繧貞叙蠕励☆繧九�逕滓�隕丞援 Atom :: ( Disjunction ) 縺ｯ縲∵ｬ｡縺ｮ繧医≧縺ｫ隧穂ｾ｡縺輔ｌ繧�:
逕滓�隕丞援 Atom :: ( ? : Disjunction ) 縺ｮ隧穂ｾ｡縺ｯ縲� Disjunction 繧定ｩ穂ｾ｡縺励※ Matcher 繧貞叙蠕励＠縲√◎縺ｮ Matcher 繧定ｿ斐☆縲�
逕滓�隕丞援 Atom :: ( ? = Disjunction ) 縺ｯ縲∵ｬ｡縺ｮ繧医≧縺ｫ隧穂ｾ｡縺輔ｌ繧�:
逕滓�隕丞援 Atom :: ( ? ! Disjunction ) 縺ｯ縲∵ｬ｡縺ｮ繧医≧縺ｫ隧穂ｾ｡縺輔ｌ繧�:
蜀�Κ陬懷勧髢｢謨ｰ CharacterSetMatcher 縺ｯ 2 蛟九�蠑墓焚 CharSet A 縺ｨ boolean 繝輔Λ繧ｰ invert 繧偵→繧翫∵ｬ｡縺ｮ繧医≧縺ｫ謖ｯ闊槭≧:
蜀�Κ陬懷勧髢｢謨ｰ Canonicalize 縺ｯ繝代Λ繝｡繧ｿ縺ｫ譁�ｭ� ch 繧偵→繧翫∵ｬ｡縺ｮ繧医≧縺ｫ謖ｯ闊槭≧:
蜿り�ュ蝣ｱ隗｣隱ｬ: ( Disjunction ) 蠖｢蠑上�諡ｬ蠑ｧ縺ｯ縲� Disjunction 繝代ち繝ｼ繝ｳ縺ｮ繧ｰ繝ｫ繝ｼ繝玲�蛻�→縺ｨ繧ゅ↓縲√�繝�メ邨先棡縺ｮ菫晏ｭ倥ｒ謠千､ｺ縺吶ｋ縲らｵ先棡縺ｯ蠕梧婿蜿ら� (\ 縺ｫ 0 莉･螟悶�10騾ｲ謨ｰ縺檎ｶ壹￥繧ゅ�)縲∫ｽｮ謠帶枚蟄怜�蜀�〒縺ｮ蜿ら�縺ｫ逕ｨ縺�ｉ繧後√∪縺滓ｭ｣隕剰｡ｨ迴ｾ繝槭ャ繝�未謨ｰ縺九ｉ驟榊�縺ｮ荳驛ｨ繧定ｿ斐＆繧後ｋ縲よ峡蠑ｧ縺ｮ謐墓拷縺ｮ謖ｯ繧玖�縺��謚大宛縺ｫ縺ｯ縲∽ｻ｣繧上ｊ縺ｫ (?: Disjunction ) 蠖｢蠑上ｒ逕ｨ縺�ｋ縲�
(?= Disjunction ) 蠖｢蠑上�縲� 0 譁�ｭ怜ｹ��閧ｯ螳壹�蜈郁ｪｭ縺ｿ繧呈欠螳壹☆繧九よ�蜉溘☆繧九◆繧√↓縺ｯ Disjunction 蜀�Κ縺ｮ繝代ち繝ｼ繝ｳ縺ｯ迴ｾ蝨ｨ菴咲ｽｮ縺ｫ縺翫＞縺ｦ繝槭ャ繝√＠縺ｪ縺代ｌ縺ｰ縺ｪ繧峨↑縺�′縲∝ｾ檎ｶ壹�繝槭ャ繝√Φ繧ｰ縺ｮ蜑阪↓迴ｾ蝨ｨ菴咲ｽｮ縺ｯ蜑埼ｲ縺励↑縺�� Disjunction 縺檎樟蝨ｨ菴咲ｽｮ縺ｫ縺翫￠繧九�繝�メ縺ｫ菴暮壹ｊ縺九≠繧句�ｴ蜷医�縲∵怙蛻昴�繧ゅ�縺�縺代′讀懈渊縺輔ｌ繧九ゆｻ悶�豁｣隕剰｡ｨ迴ｾ貍皮ｮ怜ｭ舌→縺ｯ逡ｰ縺ｪ繧翫� (?= 蠖｢蠑丞�縺ｸ縺ｮ蠕梧婿蜿ら�縺ｯ蟄伜惠縺励↑縺� (縺薙�迢ｬ迚ｹ縺ｮ謖ｯ繧玖�縺�� Perl 縺九ｉ邯呎価縺輔ｌ繧�)縲� Disjunction 縺梧黒謐画峡蠑ｧ縺ｨ縺昴�謐墓拷縺ｸ縺ｮ蠕梧婿蜿ら�繧貞性繧蠕檎ｶ壹�繝代ち繝ｼ繝ｳ縺ｧ讒区�縺輔ｌ繧九→縺阪√％縺ｮ縺薙→縺碁㍾隕√↓縺ｪ繧九�
萓九∴縺ｰ縲�
/(?=(a+))/.exec("baaabac")
縺ｯ縲� 1 蛟狗岼縺ｮ b 縺ｮ逶ｴ蠕後�遨ｺ譁�ｭ怜�縺ｫ繝槭ャ繝√＠縲√◎繧後ｆ縺域ｬ｡縺ｮ驟榊�繧定ｿ斐☆:
["", "aaa"]
蜈郁ｪｭ縺ｿ縺ｸ蠕梧婿蜿ら�縺ｮ荳崎ｶｳ縺ｮ萓九→縺励※縲∵ｬ｡繧定�∴縺ｦ縺ｿ繧�:
/(?=(a+))a*b\1/.exec("baaabac")
縺薙�蠑上′霑斐☆縺ｮ縺ｯ谺｡縺ｧ縺ゅｊ:
["aba", "a"]
谺｡縺ｮ繧医≧縺ｫ縺ｯ縺ｪ繧峨↑縺�:
["aaaba", "a"]
(?= Disjunction ) 蠖｢蠑上�縲� 0 譁�ｭ怜ｹ��蜷ｦ螳壹�蜈郁ｪｭ縺ｿ繧呈欠螳壹☆繧九よ�蜉溘☆繧九◆繧√↓縺ｯ Disjunction 蜀�Κ縺ｮ繝代ち繝ｼ繝ｳ縺ｯ迴ｾ蝨ｨ菴咲ｽｮ縺ｫ縺翫＞縺ｦ繝槭ャ繝√↓螟ｱ謨励＠縺ｪ縺代ｌ縺ｰ縺ｪ繧峨↑縺�ら樟蝨ｨ菴咲ｽｮ縺ｯ蠕檎ｶ壹�繝槭ャ繝√Φ繧ｰ縺ｮ蜑阪↓蜑埼ｲ縺励↑縺�� Disjunction 縺ｫ縺ｯ謐墓拷諡ｬ蠑ｧ繧貞性繧√ｉ繧後ｋ縺後√◎繧後ｉ縺ｸ縺ｮ蠕梧婿蜿ら�縺ｯ Disjunction 閾ｪ霄ｫ蜀�Κ縺九ｉ縺ｮ蝣ｴ蜷医ｂ縺ｮ縺ｿ諢丞袖繧呈戟縺､縲ゅヱ繧ｿ繝ｼ繝ｳ蜀��莉悶�蝣ｴ謇縺九ｉ縺ｮ縺薙ｌ繧峨�謐墓拷諡ｬ蠑ｧ縺ｸ縺ｮ蠕梧婿蜿ら�縺ｯ縲√ヱ繧ｿ繝ｼ繝ｳ縺ｫ蜷ｦ螳壹�蜈郁ｪｭ縺ｿ縺梧�蜉溘＠縺ｦ縺ｯ縺ｪ繧峨↑縺�◆繧√∝ｸｸ縺ｫ undefined 繧定ｿ斐☆縲ゆｾ九∴縺ｰ:
/(.*?)a(?!(a+)b\2c)\2(.*)/.exec("baaabaac")
縺ｯ縲√≠繧区ｭ｣縺ｮ謨ｰ n 蛟九� a, 1 蛟九� b, 莉悶� n 蛟九� (1 蛟狗岼縺ｮ \2 縺ｧ謖�ｮ壹＆繧後ｋ) a, 1 蛟九� c, 縺檎峩蠕後↓邯壹°縺ｪ縺�ｈ縺�↑ 1 蛟九� a 繧呈､懃ｴ｢縺吶ｋ縲� 2 蛟狗岼縺ｮ \2 縺ｯ蜷ｦ螳壹�蜈郁ｪｭ縺ｿ縺ｮ螟夜Κ縺ｧ縺ゅｊ縲√＠縺溘′縺｣縺ｦ undefined 縺ｫ蟇ｾ縺励※繝槭ャ繝√☆繧九�縺ｧ蟶ｸ縺ｫ謌仙粥縺吶ｋ縲ょｼ丞�菴薙�谺｡縺ｮ驟榊�繧定ｿ斐☆:
["baaabaac", "ba", undefined, "abaac"]
譁�ｭ励こ繝ｼ繧ｹ繧貞玄蛻･縺励↑縺��繝�メ縺ｧ縺ｯ縲∝�縺ｦ縺ｮ譁�ｭ励�豈碑ｼ��逶ｴ蜑阪↓證鈴ｻ吶↓螟ｧ譁�ｭ励↓螟画鋤縺輔ｌ繧九ゅ＠縺九＠縲∝､ｧ譁�ｭ励∈縺ｮ螟画鋤縺� 1 蛟倶ｻ･荳翫�譁�ｭ励↓螻暮幕縺輔ｌ繧句�ｴ蜷�("ß" (\u00DF) 縺九ｉ "SS" 縺ｫ螟画鋤縺ｪ縺ｩ)縺ｯ縲∽ｻ｣繧上ｊ縺ｫ譁�ｭ励�縺昴�縺ｾ縺ｾ谿九＆繧後ｋ縲� ASCII 譁�ｭ励〒縺ｪ縺上※繧ゅ∝､ｧ譁�ｭ励∈縺ｮ螟画鋤縺後◎縺ｮ譁�ｭ励ｒ ASCII 譁�ｭ励↓縺吶ｋ蝣ｴ蜷医√◎縺ｮ譁�ｭ励�谿九＆繧後ｋ縲ゅ％繧後� /[a-z]/i 縺ｮ繧医≧縺ｪ ASCII 譁�ｭ励�繝槭ャ繝√�縺ｿ繧呈э蝗ｳ縺励◆豁｣隕剰｡ｨ迴ｾ縺ｮ繝槭ャ繝√°繧峨―u0131 \u017F 縺ｮ繧医≧縺ｪ Unicode 譁�ｭ励ｒ驕ｮ繧九ゅ↑縺翫√％繧後ｉ縺ｮ螟画鋤縺瑚ｨｱ蜿ｯ縺輔ｌ繧句�ｴ蜷医� /[^\W]/i 縺ｯ a, b, ..., h, 縺ｫ縺ｯ繝槭ャ繝√☆繧九′ i 繧� s 縺ｫ縺ｯ繝槭ャ繝√＠縺ｪ縺��
逕滓�隕丞援 AtomEscape :: DecimalEscape 縺ｯ縲∵ｬ｡縺ｮ繧医≧縺ｫ隧穂ｾ｡縺輔ｌ繧�:
逕滓�隕丞援 AtomEscape :: CharacterEscape 縺ｯ縲∵ｬ｡縺ｮ繧医≧縺ｫ隧穂ｾ｡縺輔ｌ繧�:
逕滓�隕丞援 AtomEscape :: CharacterClassEscape 縺ｯ縲∵ｬ｡縺ｮ繧医≧縺ｫ隧穂ｾ｡縺輔ｌ繧�:
蜿り�ュ蝣ｱ隗｣隱ｬ: \ 縺ｫ 0 莉･螟悶�10騾ｲ謨ｰ n 縺ｮ邯壹￥蠖｢蠑上�繧ｨ繧ｹ繧ｱ繝ｼ繝励す繝ｼ繧ｱ繝ｳ繧ｹ縺ｯ縲∵黒謐画峡蠑ｧ縺ｮ n 逡ｪ逶ｮ縺ｮ髮�粋 (繧ｻ繧ｯ繧ｷ繝ｧ繝ｳ 15.10.2.11) 縺ｮ邨先棡縺ｫ繝槭ャ繝√☆繧九よｭ｣隕剰｡ｨ迴ｾ荳ｭ縺ｮ謐墓拷諡ｬ蠑ｧ縺� n 蛟区悴貅縺ｧ縺ゅｋ蝣ｴ蜷医�繧ｨ繝ｩ繝ｼ縺ｧ縺ゅｋ縲よｭ｣隕剰｡ｨ迴ｾ縺� n 蛟倶ｻ･荳翫�謐墓拷諡ｬ蠑ｧ繧呈戟縺､縺� n 逡ｪ逶ｮ縺御ｽ輔ｂ謐墓拷縺輔ｌ縺� undefined 縺ｧ縺ゅｋ蝣ｴ蜷医√◎縺ｮ蠕梧婿蜿ら�縺ｯ蟶ｸ縺ｫ謌仙粥縺吶ｋ縲�
逕滓�隕丞援 CharacterEscape :: ControlEscape 縺ｮ隧穂ｾ｡縺ｯ縲∽ｸ九�陦ｨ縺ｫ蠕薙▲縺ｦ譁�ｭ励ｒ霑斐☆:
| ControlEscape | Unicode Value | Name | Symbol |
| t | \u0009 | horizontal tab | <HT> |
| n | \u000A | line feed (new line) | <LF> |
| v | \u000B | vertical tab | <VT> |
| f | \u000C | form feed | <FF> |
| r | \u000D | carriage return |
<CR> |
逕滓�隕丞援 CharacterEscape :: c ControlLetter 縺ｯ縲∵ｬ｡縺ｮ繧医≧縺ｫ隧穂ｾ｡縺輔ｌ繧�:
逕滓�隕丞援 CharacterEscape :: HexEscapeSequence 縺ｮ隧穂ｾ｡縺ｯ縲� HexEscapeSequence 縺ｮ譁�ｭ怜､ (繧ｻ繧ｯ繧ｷ繝ｧ繝ｳ 7.8.4) 繧定ｩ穂ｾ｡縺励※縲∫ｵ先棡縺ｮ譁�ｭ励ｒ霑斐☆縲�
逕滓�隕丞援 CharacterEscape :: UnicodeEscapeSequence 縺ｮ隧穂ｾ｡縺ｯ縲� UnicodeEscapeSequence 縺ｮ譁�ｭ怜､ (繧ｻ繧ｯ繧ｷ繝ｧ繝ｳ 7.8.4) 繧定ｩ穂ｾ｡縺励※縲∫ｵ先棡縺ｮ譁�ｭ励ｒ霑斐☆縲�
逕滓�隕丞援 CharacterEscape :: IdentityEscape 縺ｮ隧穂ｾ｡縺ｯ縲� IdentityEscape 縺ｧ陦ｨ縺輔ｌ繧区枚蟄励ｒ霑斐☆縲�
逕滓�隕丞援 DecimalEscape :: DecimalIntegerLiteral [lookahead ∉ DecimalDigit] 縺ｯ縲∵ｬ｡縺ｮ繧医≧縺ｫ隧穂ｾ｡縺輔ｌ繧九�
"DecimalIntegerLiteral 縺ｮ謨ｰ蟄ｦ蛟､" 縺ｮ螳夂ｾｩ縺ｯ繧ｻ繧ｯ繧ｷ繝ｧ繝ｳ 7.8.3 縺ｧ縺ゅｋ縲�
蜿り�ュ蝣ｱ隗｣隱ｬ: 譛蛻昴�謨ｰ蟄励′0莉･螟悶〒縺ゅｋ10騾ｲ謨ｰ n 縺� \ 縺ｫ邯壹￥蝣ｴ蜷医√◎縺ｮ繧ｨ繧ｹ繧ｱ繝ｼ繝励す繝ｼ繧ｱ繝ｳ繧ｹ縺ｯ蠕梧婿蜿ら�縺ｨ縺励※閠�∴繧九よｭ｣隕剰｡ｨ迴ｾ蜈ｨ菴薙�蟾ｦ謐墓拷諡ｬ蠑ｧ縺ｮ邱乗焚繧医ｊ繧� n 縺悟､ｧ縺阪＞蝣ｴ蜷医�繧ｨ繝ｩ繝ｼ縺ｧ縺ゅｋ縲� \0 縺ｯ NUL 譁�ｭ励ｒ陦ｨ縺励�10騾ｲ謨ｰ蟄励ｒ蠕後↓邯壹￠繧九％縺ｨ縺ｯ縺ｧ縺阪↑縺��
逕滓�隕丞援 CharacterClassEscape :: d 縺ｮ隧穂ｾ｡縺ｯ縲�0 縺九ｉ 9 縺ｾ縺ｧ繧貞性繧譁�ｭ励� 10 蛟九�隕∫ｴ�髮�粋繧定ｿ斐☆縲�
逕滓�隕丞援 CharacterClassEscape :: D 縺ｮ隧穂ｾ｡縺ｯ縲� CharacterClassEscape :: d 縺瑚ｿ斐☆髮�粋繧帝勁縺丞�縺ｦ縺ｮ譁�ｭ励�髮�粋繧定ｿ斐☆縲�
逕滓�隕丞援 CharacterClassEscape :: s 縺ｮ隧穂ｾ｡縺ｯ縲� WhiteSpace (繧ｻ繧ｯ繧ｷ繝ｧ繝ｳ 7.2) 縺ｾ縺溘� LineTerminator (繧ｻ繧ｯ繧ｷ繝ｧ繝ｳ 7.3) 逕滓�隕丞援縺ｮ蜿ｳ霎ｺ荳翫�譁�ｭ励ｒ蜷ｫ繧譁�ｭ鈴寔蜷医ｒ霑斐☆縲�
逕滓�隕丞援 CharacterClassEscape :: S 縺ｮ隧穂ｾ｡縺ｯ縲� CharacterClassEscape :: s 縺瑚ｿ斐☆髮�粋繧帝勁縺丞�縺ｦ縺ｮ譁�ｭ鈴寔蜷医ｒ霑斐☆縲�
逕滓�隕丞援 CharacterClassEscape :: w 縺ｮ隧穂ｾ｡縺ｯ縲� 63 蛟九�譁�ｭ励ｒ蜷ｫ繧譁�ｭ励�髮�粋繧定ｿ斐☆:
a b c d e f g h i j k l m n o p q r s t u v w x y z A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0 1 2 3 4 5 6 7 8 9 _
逕滓�隕丞援 CharacterClassEscape :: W 縺ｮ隧穂ｾ｡縺ｯ縲� CharacterClassEscape :: w 縺瑚ｿ斐☆髮�粋繧帝勁縺丞�縺ｦ縺ｮ譁�ｭ鈴寔蜷医ｒ霑斐☆縲�
逕滓�隕丞援 CharacterClass :: [ [lookahead ∉ {^}] ClassRanges ] 縺ｮ隧穂ｾ｡縺ｯ縲� ClassRanges 繧定ｩ穂ｾ｡縺励※ CharSet 繧貞叙蠕励＠縲√◎縺ｮ CharSet 縺ｨ繝悶�繝ｪ繧｢繝ｳ蛟､ false 繧定ｿ斐☆縲�
逕滓�隕丞援 CharacterClass :: [ ^ ClassRanges ] 縺ｮ隧穂ｾ｡縺ｯ縲� ClassRanges 繧定ｩ穂ｾ｡縺励※ CharSet 繧貞叙蠕励＠縲√◎縺ｮ CharSet 縺ｨ繝悶�繝ｪ繧｢繝ｳ蛟､ true 繧定ｿ斐☆縲�
逕滓�隕丞援 ClassRanges :: [empty] 縺ｮ隧穂ｾ｡縺ｯ縲∫ｩｺ縺ｮ CharSet 繧定ｿ斐☆縲�
逕滓�隕丞援 ClassRanges :: NonemptyClassRanges 縺ｮ隧穂ｾ｡縺ｯ縲� NonemptyClassRanges 繧定ｩ穂ｾ｡縺励※ CharSet 繧貞叙蠕励＠縲√◎縺ｮ CharSet 繧定ｿ斐☆縲�
逕滓�隕丞援 NonemptyClassRanges :: ClassAtom 縺ｮ隧穂ｾ｡縺ｯ縲� ClassAtom 繧定ｩ穂ｾ｡縺励※ CharSet 繧貞叙蠕励＠縲√◎縺ｮ CharSet 繧定ｿ斐☆縲�
逕滓�隕丞援 NonemptyClassRanges :: ClassAtom NonemptyClassRangesNoDash 縺ｯ縲∵ｬ｡縺ｮ繧医≧縺ｫ隧穂ｾ｡縺輔ｌ繧�:
逕滓�隕丞援 NonemptyClassRanges :: ClassAtom - ClassAtom ClassRanges 縺ｯ縲∵ｬ｡縺ｮ繧医≧縺ｫ隧穂ｾ｡縺輔ｌ繧�:
蜀�Κ陬懷勧髢｢謨ｰ CharacterRange 縺ｯ縲� 2 蛟九� CharSet 繝代Λ繝｡繝ｼ繧ｿ A 縺ｨ B 繧偵→繧翫∵ｬ｡繧貞ｮ溯｡後☆繧�:
逕滓�隕丞援 NonemptyClassRangesNoDash :: ClassAtom 隧穂ｾ｡縺ｯ縲� ClassAtom 隧穂ｾ｡縺ｧ CharSet 繧貞叙蠕励＠縲√◎縺ｮ CharSet 繧定ｿ斐☆縲�
逕滓�隕丞援 NonemptyClassRangesNoDash :: ClassAtomNoDash NonemptyClassRangesNoDash 縺ｯ縲∵ｬ｡縺ｮ繧医≧縺ｫ隧穂ｾ｡縺輔ｌ繧�::
逕滓�隕丞援 NonemptyClassRangesNoDash :: ClassAtomNoDash - ClassAtom ClassRanges 縺ｯ縲∵ｬ｡縺ｮ繧医≧縺ｫ隧穂ｾ｡縺輔ｌ繧�::
蜿り�ュ蝣ｱ隗｣隱ｬ: ClassRanges 縺ｯ縲∝腰荳縺ｮ ClassAtom 縺昴＠縺ｦ/縺ｾ縺溘� 繝繝�す繝･縺ｧ蛹ｺ蛻�ｉ繧後◆ 2 蛟九� ClassAtom 縺ｮ遽�峇縺ｫ螻暮幕縺励※繧医＞縲よ枚蟄励こ繝ｼ繧ｹ縺ｫ縺､縺�※縺ｯ縲� ClassRanges 縺ｯ 1 縺､逶ｮ縺ｮ ClassAtom 縺ｨ 2 縺､逶ｮ縺ｮ ClassAtom 縺ｾ縺ｧ縺ｮ髢薙�蜈ｨ縺ｦ縺ｮ譁�ｭ励ｒ蜷ｫ繧縲� ClassAtom 縺悟腰荳縺ｮ譁�ｭ励ｒ陦ｨ縺輔↑縺� (萓九∴縺ｰ縲∽ｸ譁ｹ縺� \w) 縺ｪ繧峨�縲√∪縺� 1 縺､逶ｮ縺ｮ ClassAtom 縺ｮ繧ｳ繝ｼ繝峨�繧､繝ｳ繝亥､縺� 2 縺､逶ｮ縺ｮ ClassAtom 縺ｮ繧ｳ繝ｼ繝峨�繧､繝ｳ繝亥､繧医ｊ螟ｧ縺阪＞縺ｪ繧峨�縲√お繝ｩ繝ｼ縺檎匱逕溘☆繧九�
繝代ち繝ｼ繝ｳ縺梧枚蟄励こ繝ｼ繧ｹ繧貞玄蛻･縺励↑縺�→縺励※繧ゅ∫ｯ�峇縺ｮ荳｡遶ｯ縺ｮ譁�ｭ励こ繝ｼ繧ｹ縺ｯ縲∵枚蟄励�遽�峇縺ｸ縺ｮ謇螻槫愛螳壹↓縺翫＞縺ｦ驥崎ｦ√〒縺ゅｋ縲ゅ◆縺ｨ縺医�縲√ヱ繧ｿ繝ｼ繝ｳ /[E-F]/i 縺ｯ譁�ｭ� E, F, e, f 縺ｫ縺ｮ縺ｿ繝槭ャ繝√☆繧九�縺ｫ蟇ｾ縺励※縲√ヱ繧ｿ繝ｼ繝ｳ /[E-f]/i 縺ｯ螟ｧ譁�ｭ怜ｰ乗枚蟄怜性繧√◆ ASCII 譁�ｭ励□縺代〒縺ｪ縺剰ｨ伜捷 [, \, ], ^, _, ` 縺ｫ繧ゅ�繝�メ縺吶ｋ縲�
譁�ｭ� - 縺ｯ譁�ｭ鈴壹ｊ縺ｫ謇ｱ繧上ｌ縺�ｋ縺九∫ｯ�峇繧堤､ｺ縺帙ｋ縺九〒縺ゅｋ縲� - 縺梧枚蟄鈴壹ｊ縺ｫ謇ｱ繧上ｌ繧九�縺ｯ縲√◎繧後′ ClassRanges 縺ｮ譛蛻昴∪縺溘�譛蠕後�譁�ｭ励〒縺ゅｋ蝣ｴ蜷医∫ｯ�峇謖�ｮ壹�蜈磯�ｭ縺ｾ縺溘�譛ｫ蟆ｾ縺ｧ縺ゅｋ蝣ｴ蜷医∫峩蠕後↓遽�峇謖�ｮ壹′邯壹￥蝣ｴ蜷医〒縺ゅｋ縲�
逕滓�隕丞援 ClassAtom :: - 縺ｮ隧穂ｾ｡縺ｯ縲� 1 蛟九�譁�ｭ� - 縺ｧ讒区�縺輔ｌ繧� CharSet 繧定ｿ斐☆縲�
逕滓�隕丞援 ClassAtom :: ClassAtomNoDash 縺ｮ隧穂ｾ｡縺ｯ縲� ClassAtomNoDash 隧穂ｾ｡縺ｧ CharSet 繧貞叙蠕励＠縲√◎縺ｮ CharSet 繧定ｿ斐☆縲�
逕滓�隕丞援 ClassAtomNoDash :: SourceCharacter but not one of \ ] - 縺ｮ隧穂ｾ｡縺ｯ縲� SourceCharacter 縺ｧ陦ｨ縺輔ｌ繧区枚蟄励〒讒区�縺輔ｌ繧� 1 隕∫ｴ�縺ｮ CharSet 繧定ｿ斐☆縲�
逕滓�隕丞援 ClassAtomNoDash :: \ ClassEscape 縺ｮ隧穂ｾ｡縺ｯ縲� ClassEscape 隧穂ｾ｡縺ｧ CharSet 繧貞叙蠕励＠縲√◎縺ｮ CharSet 繧定ｿ斐☆縲�
逕滓�隕丞援 ClassEscape :: DecimalEscape 縺ｯ縲∵ｬ｡縺ｮ繧医≧縺ｫ隧穂ｾ｡縺輔ｌ繧�:
逕滓�隕丞援 ClassEscape :: b 縺ｯ縲� 1 蛟九�譁�ｭ� <BS> (Unicode 蛟､ 0008) 縺ｧ讒区�縺輔ｌ繧� CharSet繧定ｿ斐＠縺ｦ隧穂ｾ｡縺輔ｌ繧九�
逕滓�隕丞援 ClassEscape :: CharacterEscape 縺ｮ隧穂ｾ｡縺ｯ縲� CharacterEscape 隧穂ｾ｡縺ｧ譁�ｭ励ｒ蜿門ｾ励＠縲√◎縺ｮ譁�ｭ励〒讒区�縺輔ｌ繧� 1 隕∫ｴ�縺ｮ CharSet 繧定ｿ斐☆縲�
逕滓�隕丞援 ClassEscape :: CharacterClassEscape 縺ｮ隧穂ｾ｡縺ｯ縲� CharacterClassEscape 隧穂ｾ｡縺ｧ CharSet 繧貞叙蠕励＠縲√◎縺ｮ CharSet 繧定ｿ斐☆縲�
蜿り�ュ蝣ｱ隗｣隱ｬ: ClassAtom 縺ｯ縲� \b, \B, 蠕梧婿蜿ら�繧帝勁縺乗ｮ九ｊ縺ｮ豁｣隕剰｡ｨ迴ｾ縺ｧ險ｱ縺輔ｌ繧倶ｻｻ諢上�繧ｨ繧ｹ繧ｱ繝ｼ繝励す繝ｼ繧ｱ繝ｳ繧ｹ繧剃ｽｿ逕ｨ縺ｧ縺阪ｋ縲� CharacterClass 蜀�Κ縺ｫ縺翫＞縺ｦ縲� \b 縺ｯ蠕碁譁�ｭ� (backspace character) 繧呈э蜻ｳ縺励∽ｸ譁ｹ \B 縺ｨ蠕梧婿蜿ら�縺ｯ繧ｨ繝ｩ繝ｼ繧堤匱逕溘＆縺帙ｋ縲� ClassAtom 蜀�Κ縺ｧ縺ｮ蠕梧婿蜿ら�縺ｮ菴ｿ逕ｨ縺ｯ繧ｨ繝ｩ繝ｼ繧貞ｼ輔″襍ｷ縺薙☆縲�
pattern 縺� [[Class]] 繝励Ο繝代ユ繧｣縺� "RegExp" 縺ｧ縺ゅｋ繧ｪ繝悶ず繧ｧ繧ｯ繝� R 縺ｧ縲√°縺､ flags 縺� undefined 縺ｪ繧峨�縲� R 繧偵◎縺ｮ縺ｾ縺ｾ霑斐☆縲ゅ◎縺�〒縺ｪ縺代ｌ縺ｰ RegExp 繧ｳ繝ｳ繧ｹ繝医Λ繧ｯ繧ｿ (繧ｻ繧ｯ繧ｷ繝ｧ繝ｳ 15.10.4.1) 繧貞他蜃ｺ縺励√◎繧後↓蠑墓焚 pattern 縺ｨ flags 繧呈ｸ｡縺励√◎縺ｮ繧ｳ繝ｳ繧ｹ繝医Λ繧ｯ繧ｿ縺ｫ讒狗ｯ峨＆繧後ｋ繧ｪ繝悶ず繧ｧ繧ｯ繝医ｒ霑斐☆縲�
RegExp 縺� new 蠑上�荳驛ｨ縺ｨ縺励※蜻ｼ蜃ｺ縺輔ｌ繧九→縺阪√◎繧後�繧ｳ繝ｳ繧ｹ繝医Λ繧ｯ繧ｿ縺ｧ縺ゅｋ: 縺昴ｌ縺ｯ縲∵眠縺溘↓逕滓�縺輔ｌ繧九が繝悶ず繧ｧ繧ｯ繝医ｒ蛻晄悄蛹悶☆繧九�
pattern 縺� [[Class]] 繝励Ο繝代ユ繧｣縺� "RegExp" 縺ｧ縺ゅｋ 繧ｪ繝悶ず繧ｧ繧ｯ繝� R 縺ｧ縲√°縺､ flags 縺� undefined 縺ｪ繧峨�縲� P 繧� R 縺ｮ讒狗ｯ峨↓逕ｨ縺�ｋ pattern 縺ｨ縺励� F 繧� R 縺ｮ讒狗ｯ峨↓逕ｨ縺�ｋ flags 縺ｨ縺吶ｋ縲� pattern 縺� [[Class]] 繝励Ο繝代ユ繧｣縺� "RegExp" 縺ｧ縺ゅｋ 繧ｪ繝悶ず繧ｧ繧ｯ繝� R 縺ｧ縲√°縺､ flags 縺� undefined 縺ｧ縺ｪ縺�↑繧峨�縲� 萓句､� TypeError 繧呈兜縺偵ｋ縲� 縺昴≧縺ｧ縺ｪ縺代ｌ縺ｰ縲� P 繧� pattern 縺� undefined 縺ｪ繧峨�遨ｺ譁�ｭ怜�縲√◎縺�〒縺ｪ縺代ｌ縺ｰ ToString(pattern) 縺ｨ縺励� F 繧� flags 縺� undefined 縺ｪ繧峨�遨ｺ譁�ｭ怜�縲√◎縺�〒縺ｪ縺代ｌ縺ｰ ToString(flags) 縺ｨ縺吶ｋ縲�
譁ｰ隕上↓讒狗ｯ峨＆繧後◆繧ｪ繝悶ず繧ｧ繧ｯ繝医� global 繝励Ο繝代ユ繧｣縺ｯ縲� F 縺梧枚蟄� "g" 繧貞性繧√� true, 縺昴≧縺ｧ縺ｪ縺代ｌ縺ｰ false 縺ｧ縺ゅｋ Boolean 蛟､縺ｫ險ｭ螳壹＆繧後ｋ縲�
譁ｰ隕上↓讒狗ｯ峨＆繧後◆繧ｪ繝悶ず繧ｧ繧ｯ繝医� ignoreCase 繝励Ο繝代ユ繧｣縺ｯ縲� F 縺梧枚蟄� "i" 繧貞性繧√� true, 縺昴≧縺ｧ縺ｪ縺代ｌ縺ｰ false 縺ｧ縺ゅｋ Boolean 蛟､縺ｫ險ｭ螳壹＆繧後ｋ縲�
譁ｰ隕上↓讒狗ｯ峨＆繧後◆繧ｪ繝悶ず繧ｧ繧ｯ繝医� multiline 繝励Ο繝代ユ繧｣縺ｯ縲� F 縺梧枚蟄� "m" 繧貞性繧√� true, 縺昴≧縺ｧ縺ｪ縺代ｌ縺ｰ false 縺ｧ縺ゅｋ Boolean 蛟､縺ｫ險ｭ螳壹＆繧後ｋ縲�
F 縺� "g", "i", "m" 莉･螟悶�譁�ｭ励ｒ蜷ｫ繧縺ｪ繧峨�縲√∪縺滉ｸ譌ｦ蜃ｺ迴ｾ縺励◆繧ゅ�縺ｨ蜷後§繧ゅ�繧貞性繧縺ｪ繧峨�縲∽ｾ句､� SyntaxError 繧呈兜縺偵ｋ縲�
P 縺ｮ譁�ｭ励′譖ｸ蠑� Pattern 繧呈戟縺溘↑縺�↑繧峨�縲∽ｾ句､� SyntaxError 繧呈兜縺偵ｋ縲ゅ◎縺�〒縺ｪ縺代ｌ縺ｰ縲∵眠隕上↓讒狗ｯ峨＆繧後◆繧ｪ繝悶ず繧ｧ繧ｯ繝医↓ Pattern 縺ｮ隧穂ｾ｡ ("compiling") 縺ｫ繧医ｊ蠕励ｉ繧後ｋ [[Match]] 繝励Ο繝代ユ繧｣繧呈戟縺溘○繧九� Pattern 縺ｮ隧穂ｾ｡縺御ｾ句､� SyntaxError 繧呈兜縺偵※繧ゅｈ縺�％縺ｨ縺ｫ豕ｨ諢上� (Note: pattern 縺� StringLiteral 縺ｪ繧峨�縲� 譁�ｭ怜�縺� RegExp 縺ｫ繧医▲縺ｦ蜃ｦ逅�＆繧後ｋ蜑阪↓縲�壼ｸｸ縺ｮ繧ｨ繧ｹ繧ｱ繝ｼ繝励す繝ｼ繧ｱ繝ｳ繧ｹ縺ｮ螟画鋤縺悟ｮ溯｡後＆繧後ｋ縲� RegExp 縺ｫ繧医▲縺ｦ隱崎ｭ倥＆繧後ｋ繧ｨ繧ｹ繧ｱ繝ｼ繝励す繝ｼ繧ｱ繝ｳ繧ｹ繧� pattern 縺ｫ蜷ｫ繧√↑縺代ｌ縺ｰ縺ｪ繧峨↑縺�↑繧峨�縲� StringLiteral 縺ｮ蜀�ｮｹ縺ｮ蠖｢謌先凾縺ｫ蜑企勁縺輔ｌ繧九％縺ｨ繧帝亟縺舌◆繧√↓縲� StringLiteral 蜀��譁�ｭ� "\" 縺ｯ繧ｨ繧ｹ繧ｱ繝ｼ繝励＆繧後↑縺代ｌ縺ｰ縺ｪ繧峨↑縺��)
譁ｰ隕上↓讒狗ｯ峨＆繧後◆繧ｪ繝悶ず繧ｧ繧ｯ繝医� source 繝励Ο繝代ユ繧｣縺ｯ縲� P 縺ｫ蝓ｺ縺･縺襲attern 縺ｮ譖ｸ蠑上�螳溯｣�ｾ晏ｭ倥�譁�ｭ怜�蛟､縺ｫ險ｭ螳壹＆繧後ｋ縲�
譁ｰ隕上↓讒狗ｯ峨＆繧後◆繧ｪ繝悶ず繧ｧ繧ｯ繝医� lastIndex 繝励Ο繝代ユ繧｣縺ｯ縲� 0 縺ｫ險ｭ螳壹＆繧後ｋ縲�
譁ｰ隕上↓讒狗ｯ峨＆繧後◆繧ｪ繝悶ず繧ｧ繧ｯ繝医� [[Prototype]] 繝励Ο繝代ユ繧｣縺ｯ縲� RegExp.prototype 縺ｮ蛻晄悄蛟､縺ｧ縺ゅｋ繧ｪ繝ｪ繧ｸ繝翫Ν縺ｮ RegExp 繝励Ο繝医ち繧､繝励が繝悶ず繧ｧ繧ｯ繝医↓險ｭ螳壹＆繧後ｋ縲�
譁ｰ隕上↓讒狗ｯ峨＆繧後◆繧ｪ繝悶ず繧ｧ繧ｯ繝医� [[Class]] 繝励Ο繝代ユ繧｣縺ｯ縲� "RegExp" 縺ｫ險ｭ螳壹＆繧後ｋ
RegExp 繧ｳ繝ｳ繧ｹ繝医Λ繧ｯ繧ｿ縺ｮ縺ｮ蜀�Κ [[Prototype]] 繝励Ο繝代ユ繧｣縺ｮ蛟､縺ｯ縲� Function 繝励Ο繝医ち繧､繝励が繝悶ず繧ｧ繧ｯ繝� (繧ｻ繧ｯ繧ｷ繝ｧ繝ｳ 15.3.4) 縺ｧ縺ゅｋ縲�
蜀�Κ繝励Ο繝代ユ繧｣縺ｨ length 繝励Ο繝代ユ繧｣ (蛟､縺ｯ 2) 縺ｮ莉悶↓縲� RegExp 繧ｳ繝ｳ繧ｹ繝医Λ繧ｯ繧ｿ縺ｯ谺｡縺ｮ繝励Ο繝代ユ繧｣繧呈戟縺､:
RegExp.prototype 縺ｮ蛻晄悄蛟､縺ｯ RegExp 繝励Ο繝医ち繧､繝励が繝悶ず繧ｧ繧ｯ繝� (繧ｻ繧ｯ繧ｷ繝ｧ繝ｳ 15.10.6) 縺ｧ縺ゅｋ縲�
縺薙�繝励Ο繝代ユ繧｣縺ｯ螻樊ｧ { DontEnum, DontDelete, ReadOnly } 繧呈戟縺､縺ｹ縺阪〒縺ゅｋ縲�
RegExp 繝励Ο繝医ち繧､繝励が繝悶ず繧ｧ繧ｯ繝医�蜀�Κ [[Prototype]] 繝励Ο繝代ユ繧｣縺ｮ蛟､縺ｯ縲� Object 繝励Ο繝医ち繧､繝励〒縺ゅｋ縲� RegExp 繝励Ο繝医ち繧､繝励が繝悶ず繧ｧ繧ｯ繝医�蜀�Κ [[Class]] 繝励Ο繝代ユ繧｣縺ｮ蛟､縺ｯ縲� "Object" 縺ｧ縺ゅｋ縲�
RegExp 繝励Ο繝医ち繧､繝励が繝悶ず繧ｧ繧ｯ繝医�縲∫峡閾ｪ縺ｮ valueOf 繝励Ο繝代ユ繧｣繧呈戟縺溘↑縺�; 縺励°縺励↑縺後ｉ縲� valueOf 繝励Ο繝代ユ繧｣繧� Object 繝励Ο繝医ち繧､繝励が繝悶ず繧ｧ繧ｯ繝医°繧臥ｶ呎価縺吶ｋ縲�
RegExp 繝励Ο繝医ち繧､繝励が繝悶ず繧ｧ繧ｯ繝医�繝励Ο繝代ユ繧｣縺ｧ縺ゅｋ髢｢謨ｰ縺ｮ莉･荳九�隱ｬ譏弱↓縺翫＞縺ｦ縲√ヵ繝ｬ繝ｼ繧ｺ "縺薙� RegExp 繧ｪ繝悶ず繧ｧ繧ｯ繝�" 縺ｯ縲�未謨ｰ蜻ｼ蜃ｺ縺励� this 蛟､縺ｧ縺ゅｋ繧ｪ繝悶ず繧ｧ繧ｯ繝医ｒ蜿ら�縺吶ｋ; this 蛟､ 縺悟�驛ｨ [[Class]] 繝励Ο繝代ユ繧｣縺� "RegExp" 縺ｮ繧ｪ繝悶ず繧ｧ繧ｯ繝医〒縺ｪ縺��ｴ蜷医�縲∽ｾ句､� TypeError 縺梧兜縺偵ｉ繧後ｋ縲�
RegExp.prototype.constructor 縺ｮ蛻晄悄蛟､縺ｯ縲∫ｵ�ｾｼ縺ｿ RegExp 繧ｳ繝ｳ繧ｹ繝医Λ繧ｯ繧ｿ縺ｧ縺ゅｋ縲�
豁｣隕剰｡ｨ迴ｾ縺ｫ蟇ｾ縺励※ string 縺ｮ豁｣隕剰｡ｨ迴ｾ繝槭ャ繝√ｒ陦後＞縲√�繝�メ縺ｮ邨先棡繧貞性繧 Array 繧ｪ繝悶ず繧ｧ繧ｯ繝医√∪縺滓枚蟄怜�縺ｫ繝槭ャ繝√＠縺ｪ縺九▲縺溷�ｴ蜷医� null 繧定ｿ斐☆縲�
譁�ｭ怜� ToString(string) 縺ｯ縲∵ｬ｡縺ｮ繧医≧縺ｫ豁｣隕剰｡ｨ迴ｾ繝代ち繝ｼ繝ｳ縺ｮ逋ｺ逕溘ｒ讀懃ｴ｢縺輔ｌ繧�:
蠑� RegExp.prototype.exec(string) != null 縺ｨ蜷梧ｧ倥〒縺ゅｋ縲�
src 繧堤樟蝨ｨ縺ｮ豁｣隕剰｡ｨ迴ｾ繧定｡ｨ縺� Pattern 縺ｮ譖ｸ蠑上�譁�ｭ怜�縺ｨ縺吶ｋ縲� src 縺ｯ縲� source 繝励Ο繝代ユ繧｣縺ｾ縺� RegExp 繧ｳ繝ｳ繧ｹ繝医Λ繧ｯ繧ｿ縺ｫ萓帷ｵｦ縺輔ｌ繧九た繝ｼ繧ｹ繧ｳ繝ｼ繝峨→蜷御ｸ縺ｧ縺ゅ▲縺ｦ繧ゅ↑縺上※繧ゅｈ縺�; 縺溘□縲� src 縺檎樟蝨ｨ縺ｮ豁｣隕剰｡ｨ迴ｾ縺ｮ flags 繧剃ｼｴ縺｣縺ｦ RegExp 繧ｳ繝ｳ繧ｹ繝医Λ繧ｯ繧ｿ縺ｫ萓帷ｵｦ縺輔ｌ縺溘↑繧峨�縲∫ｵ先棡縺ｮ豁｣隕剰｡ｨ迴ｾ縺ｯ縲∫樟蝨ｨ縺ｮ豁｣隕剰｡ｨ迴ｾ縺ｨ蜷梧ｧ倥↓謖ｯ繧九∪繧上↑縺代ｌ縺ｰ縺ｪ繧峨↑縺��
toString 縺ｯ縲∵枚蟄怜� "/", src, "/" 縺ｮ騾｣邨舌〒蠖｢謌舌＆繧後ｋ譁�ｭ怜�繧定ｿ斐☆; global 繝励Ο繝代ユ繧｣縺� true 縺ｪ繧峨� "g"縲� ignoreCase 繝励Ο繝代ユ繧｣縺� true 縺ｪ繧峨� "i"縲� multiline 繝励Ο繝代ユ繧｣縺� true 縺ｪ繧峨� "m" 繧偵�｣邨舌☆繧区枚蟄怜�縺ｫ霑ｽ蜉�縺吶ｋ縲�
NOTE 螳溯｣��縲� src 蜀��迚ｹ谿頑枚蟄励ｒ繧ｨ繧ｹ繧ｱ繝ｼ繝励☆繧九◆繧√↓縲� RegExp 繧ｳ繝ｳ繧ｹ繝医Λ繧ｯ繧ｿ縺ｸ貂｡縺輔ｌ繧九た繝ｼ繧ｹ縺ｨ逡ｰ縺ｪ繧九％縺ｨ繧定ｨｱ蜿ｯ縺輔ｌ縺ｦ縺�ｋ src 縺ｮ蛻ｩ逕ｨ繧帝∈謚槭＠縺ｦ繧医＞縲ゆｾ九∴縺ｰ縲� new RegExp("/") 縺九ｉ蠕励ｉ繧後ｋ豁｣隕剰｡ｨ迴ｾ縺ｫ縺翫＞縺ｦ縲� src 縺ｯ縲∵焚縺ゅｋ蜿ｯ閭ｽ諤ｧ縺ｮ荳ｭ縺九ｉ縲� "/" 縺ｾ縺溘� "\/" 縺ｧ縺ゅｊ縺医ｋ縲ょｾ瑚��縲∵嶌蠑� RegularExpressionLiteral 繧呈戟縺､ toString 蜻ｼ蜃ｺ縺励�螳悟�縺ｪ邨先棡 ("/\//") 繧定ｨｱ蜿ｯ縺吶ｋ縲�
RegExp 繧､繝ｳ繧ｹ繧ｿ繝ｳ繧ｹ縺ｯ縲∽ｸ願ｨ倥↓謖�ｮ壹＆繧後ｋ縺昴� [[Prototype]] 繧ｪ繝悶ず繧ｧ繧ｯ繝医°繧峨�繝ｭ繝代ユ繧｣繧堤ｶ呎価縺励√∪縺滓ｬ｡縺ｮ繝励Ο繝代ユ繧｣繧呈戟縺､縲�
source 繝励Ο繝代ユ繧｣縺ｮ蛟､縺ｯ縲� 迴ｾ蝨ｨ縺ｮ豁｣隕剰｡ｨ迴ｾ繧偵≠繧峨ｏ縺� Pattern 縺ｮ譖ｸ蠑上�譁�ｭ怜�蛟､縺ｧ縺ゅｋ縲ゅ％縺ｮ繝励Ο繝代ユ繧｣縺ｯ縲∝ｱ樊ｧ { DontDelete, ReadOnly, DontEnum } 繧呈戟縺､縺ｹ縺阪〒縺ゅｋ縲�
global 繝励Ο繝代ユ繧｣縺ｮ蛟､縺ｯ縲� flags 縺梧枚蟄� "g" 繧貞性繧縺九←縺�°繧堤､ｺ縺� Boolean 蛟､縺ｧ縺ゅｋ縲ゅ％縺ｮ繝励Ο繝代ユ繧｣縺ｯ縲∝ｱ樊ｧ { DontDelete, ReadOnly, DontEnum } 繧呈戟縺､縺ｹ縺阪〒縺ゅｋ縲�
ignoreCase 繝励Ο繝代ユ繧｣縺ｮ蛟､縺ｯ縲� flags 縺梧枚蟄� "i" 繧貞性繧縺九←縺�°繧堤､ｺ縺� Boolean 蛟､縺ｧ縺ゅｋ縲ゅ％縺ｮ繝励Ο繝代ユ繧｣縺ｯ縲∝ｱ樊ｧ { DontDelete, ReadOnly, DontEnum } 繧呈戟縺､縺ｹ縺阪〒縺ゅｋ縲�
multiline 繝励Ο繝代ユ繧｣縺ｮ蛟､縺ｯ縲� flags 縺梧枚蟄� "m" 繧貞性繧縺九←縺�°繧堤､ｺ縺� Boolean 蛟､縺ｧ縺ゅｋ縲ゅ％縺ｮ繝励Ο繝代ユ繧｣縺ｯ縲∝ｱ樊ｧ { DontDelete, ReadOnly, DontEnum } 繧呈戟縺､縺ｹ縺阪〒縺ゅｋ縲�
lastIndex 繝励Ο繝代ユ繧｣縺ｮ蛟､縺ｯ縲∵枚蟄怜�縺ｮ谺｡縺ｮ繝槭ャ繝√ｒ髢句ｧ九☆繧倶ｽ咲ｽｮ繧堤音螳壹☆繧区紛謨ｰ縺ｧ縺ゅｋ縲ゅ％縺ｮ繝励Ο繝代ユ繧｣縺ｯ縲∝ｱ樊ｧ { DontDelete, DontEnum } 繧呈戟縺､縺ｹ縺阪〒縺ゅｋ縲�