鏈枃浠嬬粛浜咵S6涓璾nicode瀛楃涓茬殑鍑犱釜鏂板嚱鏁般€係tring.prototype.codePointAt鍑芥暟绫诲瀷锛?index?:number)=>number|undefinedcodePointAt鏄竴涓師鍨嬪嚱鏁帮紝鏍规嵁浼犲叆鐨刬ndex鍙傛暟杩斿洖瀛楃涓蹭腑璇ヤ綅缃瓧绗︾殑浠ｇ爜鐐癸紙codepoint锛夊€?璇ユ柟娉曞彲浠ヨ瘑鍒玼tf-16涓殑4瀛楄妭鐮佷綅锛屾瘮鍘熷瀷鍑芥暟charCodeAt鏀寔鐨勮寖鍥存洿骞匡紝鍚庤€呭彧鑳借瘑鍒?瀛楄妭鐨勫熀鏈钩闈㈠瓧绗︼紙BMP锛夈€傚彟澶栵紝褰撶储寮曡秺鐣屾椂锛宑odePointAt杩斿洖undefined锛宑harCodeAt杩斿洖NaN銆傞櫎浜嗚繖涓ょ偣锛宑odePointAt鍜宑harCodeAt鐨勭粨鏋滃熀鏈浉鍚岋細index鍙傛暟鐨勯粯璁ゅ€间负0銆傚綋瀛楃鍦ㄥ熀鏈墎骞冲瓧绗﹂泦涓椂锛屼袱鑰呰繑鍥炵殑缁撴灉鏄浉鍚岀殑銆俢onststr='abc';//瀛楃'a'鍦ㄥ熀鏈钩闈㈠瓧绗﹂泦涓璫onsole.log(str.codePointAt(0));//97//index榛樿鍊间负0console.log(str.codePointAt());//97//褰搃ndex瓒婄晫鏃讹紝杩斿洖undefinedconsole.log(str.codePointAt(5));//undefinedconsole.log(str.charCodeAt(0));//97//index鐨勯粯璁ゅ€糹s0console.log(str.charCodeAt());//97//绱㈠紩瓒婄晫鏃讹紝杩斿洖NaNconsole.log(str.charCodeAt(5));//NaN瀛楃鍦ㄨ緟鍔╁钩闈㈠瓧绗︽椂璁剧疆鍚庯紝codePointAt鍙互姝ｇ‘璇嗗埆骞惰繑鍥炲搴斿瓧绗︾殑浠ｇ爜鐐癸紙codepoint锛夈€俢harCodeAt鏃犳硶姝ｇ‘璇嗗埆锛屽彧鑳借繑鍥炲綋鍓嶄綅缃?瀛楄妭瀛楃鐨勭爜浣嶃€備緥濡傦紝瀵逛簬瀛愬钩闈㈢殑楂橀煶瀛楃饾劄锛屽畠鐢变袱涓?瀛楄妭鐨勫熀骞抽潰瀛楃0xd834鍜?xdd1e琛ㄧず銆傚綋鎴戜滑瀵桂潉炰娇鐢╟harCodeAt鏃讹紝鍙兘寰楀埌瀵瑰簲浣嶇疆鐨刢odepoint銆俢onststr='\ud834\udd1e';//杈呭姪骞抽潰瀛楃楂橀煶瀛楃饾劄console.log(str.charCodeAt(0).toString(16));//d834console.log(str.charCodeAt(1).toString(16));//dd1e褰撴垜浠娇鐢╟odePointAt鏃讹紝鎴戜滑鍙互寰楀埌饾劄鐨勪唬鐮佺偣0x1d11e銆俢onsole.log(str.codePointAt(0).toString(16));//1d11e//褰撶储寮曚负1鏃讹紝'\udd1e'鍚庢病鏈夊叾浠栫爜浣嶏紝璁や负鍙槸涓€涓?瀛楄妭鐨勫瓧绗︼紝骞朵笉鏄竴瀵圭爜浣嶏紝鎵€浠ュ彧鏈夌爜浣嶆鏃惰繑鍥炵殑鏄?\udd1e'鐨勪唬鐮佺偣锛屼笉鏄?\ud834\udd1e'鐨勪唬鐮佺偣console.log(str.codePointAt(1).toString(16));//dd1eString.fromCodePointfunctiontype:(...codePoints:number[])=>string闈欐€佸嚱鏁癴romCodePoint鏍规嵁浼犲叆鐨剈nicode鐮佺偣杩斿洖瀵瑰簲鐨勫瓧绗︿覆锛岀浉姣攆romCharCode鏀寔鐩存帴浼犲叆杈呭姪浣嶉潰鍊煎緱銆傝繕鏄互楂橀煶绗﹀彿饾劄涓轰緥锛屼娇鐢╢romCodePoint鍙互鐩存帴浼犲叆鐮佷綅鍊?x1d11e锛岃€宖romCharCode鍊奸渶瑕佷紶鍏?xd834鍜?xdd1e銆俢onsole.log(String.fromCodePoint(0x1d11e));//饾劄console.log(String.fromCodePoint(0xd834,0xdd1e));//饾劄console.log(String.fromCharCode(0x1d11e));//韯炴棤娉曟纭瘑鍒紝涔辩爜console.log(String.fromCharCode(0xd834,0xdd1e));//饾劄瀵逛簬鍩烘湰骞抽潰瀛楃锛宖romCodePoint鍜宖romCharCode鐨勭粨鏋滄槸涓€鏍风殑銆俢onsole.log(String.fromCodePoint(97));//'a'console.log(String.fromCodePoint(97,98));//'ab'console.log(String.fromCodePoint());//''console.log(String.fromCharCode(97));//'a'console.log(String.fromCharCode(97,98));//'ab'console.log(String.fromCharCode());//''String.prototype.normalizefunctiontype:(form:'NFC'|'NFD'|'NFKC'|'NFKD')=>stringprototypefunctionnormalize鎺ュ彈涓€涓寚瀹氱殑瑙勮寖鍖栵紙濡傛灉浣犱笉鎳侼FC锛孨FD绛夊惈涔夛紝鐐瑰嚮锛塮orm鍙傛暟form锛宖orm榛樿鍊间负'NFC'锛圢ormalizationFormCanonicalComposition锛屾寜鏍囧噯绛夋晥鏂瑰紡鍒嗚В锛岀劧鍚庢寜鏍囧噯绛夋晥鏂瑰紡閲嶆柊缁勫悎锛夛紝杩斿洖瑙勮寖鍖栧瓧绗︿覆銆俇nicode涓哄鍚堢鍙凤紙瀛楃涓殑瀛楁瘝甯︽湁闄勫姞绗﹀彿濡傚０璋冿級鎻愪緵浜嗕袱绉嶈〃绀猴紝涓€绉嶆槸浣跨敤unicode鐮佷綅琛ㄧず锛屽彟涓€绉嶆槸澶嶅悎瀛楃涓殑瀛楁瘝涓庨檮鍔犵鍙风粍鍚堬紝浣跨敤涓や釜鐮佷綅锛屽鐢变簬艅鏄竴涓鍚堢鍙凤紝鎴戜滑鍙互浣跨敤涓€涓唬鐮佺偣0x0144鏉ヨ〃绀哄畠锛屼篃鍙互浣跨敤涓や釜浠ｇ爜鐐?x006e鍜?x0301鏉ヨ〃绀哄畠銆俢onststr1='\u0144';//艅conststr2='\u006e\u0301';//艅console.log({str1,str2,});//{str1:'艅',str2:'艅'}杩欎袱绉嶈〃绀哄湪瑙嗚鍜岃涔変笂鏄浉鍚岀殑锛屽苟涓斿畠浠湪瑙勮寖涓婃槸绛変环鐨勩€備絾鏄湪浠ｇ爜灞傞潰涓婂畠浠槸涓嶅悓鐨勶紝str1鏄竴涓猚odepoint锛宻tr2鏄袱涓猚odepoint锛岃繖寰堝鏄撳嚭闂銆俢onsole.log(str1.length,str2.length);//12console.log(str1===str2);//falsenormalize鍑芥暟灏辨槸涓轰簡瑙ｅ喅杩欎釜闂锛屼袱涓瓧绗︿覆缁忚繃normalize鍑芥暟褰掍竴鍖栧悗锛岃繖涓棶棰樺氨娌℃湁浜嗗彂鐢熺殑鏃堕棿鏇撮暱銆傝str1='\u0144';//璁﹕tr2='\u006e\u0301';//艅//鏍囧噯鍖杝tr1=str1.normalize();str2=str2.normalize();console.log({str1,str2,});//{str1:'艅',str2:'艅'}console.log(str1.length,str2.length);//11console.log(str1===str2);//true鏂板unicode琛ㄧず鏂规硶涔嬪墠鎴戜滑琛ㄧずunicode瀛楃鍙互鐢╘u+鐮佷綅鏉ヨ〃绀恒€侲S6澧炲姞浜嗕竴绉嶆柊鐨勮〃绀烘柟寮忥紝鍗砛u+{codepoint}銆傝繖涓ょ鏂瑰紡鐨勫尯鍒篃寰堝鏄撴兂璞★紝\u+{codepoint}鏀寔鍐欏叆杈呭姪骞抽潰鐨?瀛楄妭codepoint锛岃€孿u+codepoint鍙敮鎸佸熀鏈钩闈㈢殑2bytecodepoint銆?/瀵逛簬鍩烘湰骞抽潰鐨?瀛楄妭鐮佷綅锛屼袱鑰呮病鏈夊尯鍒玞onststr1='\u{0144}';conststr2='\u0144';鎺у埗鍙版棩蹇楋紙str1===str2锛夛紱//true//楂橀煶绗﹀彿conststr3='\u{1d11e}';//琛ㄧず鏂规硶閿欒锛岃瘑鍒负涓や釜瀛楃\u1d11鍜宔conststr4='\u1d11e';console.log(str4,str3===str4);//岽慹falseunicode鐪熻浜哄ご鐤笺€傚鏋滄湁瀵箄nicode涓嶅お浜嗚В鐨勬湅鍙嬶紝鍙互鍦ㄨ瘎璁哄尯鐣欒█锛屾垜浼氬啀鍙戜竴绡囪缁嗕粙缁島nicode鍜孞S鐨勬枃绔犮€?/p>
