Efficiently replace all accented characters in a string?
For a poor man\'s implementation of near-collation-correct sorting on the client side I need a JavaScript function that does efficient single character rep
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Based on the solution by Jason Bunting, here is what I use now.
The whole thing is for the jQuery tablesorter plug-in: For (nearly correct) sorting of non-English tables with tablesorter plugin it is necessary to make use of a custom textExtraction function.
This one:
- translates the most common accented letters to unaccented ones (the list of supported letters is easily expandable)
- changes dates in German format (
'dd.mm.yyyy') to a recognized format ('yyyy-mm-dd')
Be careful to save the JavaScript file in UTF-8 encoding or it won't work.
// file encoding must be UTF-8! function getTextExtractor() { return (function() { var patternLetters = /[öäüÖÄÜáàâéèêúùûóòôÁÀÂÉÈÊÚÙÛÓÒÔß]/g; var patternDateDmy = /^(?:\D+)?(\d{1,2})\.(\d{1,2})\.(\d{2,4})$/; var lookupLetters = { "ä": "a", "ö": "o", "ü": "u", "Ä": "A", "Ö": "O", "Ü": "U", "á": "a", "à": "a", "â": "a", "é": "e", "è": "e", "ê": "e", "ú": "u", "ù": "u", "û": "u", "ó": "o", "ò": "o", "ô": "o", "Á": "A", "À": "A", "Â": "A", "É": "E", "È": "E", "Ê": "E", "Ú": "U", "Ù": "U", "Û": "U", "Ó": "O", "Ò": "O", "Ô": "O", "ß": "s" }; var letterTranslator = function(match) { return lookupLetters[match] || match; } return function(node) { var text = $.trim($(node).text()); var date = text.match(patternDateDmy); if (date) return [date[3], date[2], date[1]].join("-"); else return text.replace(patternLetters, letterTranslator); } })(); }You can use it like this:
$("table.sortable").tablesorter({ textExtraction: getTextExtractor() });讨论(0) -
The correct terminology for such accents is Diacritics. After Googling this term, I found this function which is part of
backbone.paginator. It has a very complete collection of Diacritics and replaces them with their most intuitive ascii character. I found this to be the most complete Javascript solution available today.The full function for future reference:
function removeDiacritics (str) { var defaultDiacriticsRemovalMap = [ {'base':'A', 'letters':/[\u0041\u24B6\uFF21\u00C0\u00C1\u00C2\u1EA6\u1EA4\u1EAA\u1EA8\u00C3\u0100\u0102\u1EB0\u1EAE\u1EB4\u1EB2\u0226\u01E0\u00C4\u01DE\u1EA2\u00C5\u01FA\u01CD\u0200\u0202\u1EA0\u1EAC\u1EB6\u1E00\u0104\u023A\u2C6F]/g}, {'base':'AA','letters':/[\uA732]/g}, {'base':'AE','letters':/[\u00C6\u01FC\u01E2]/g}, {'base':'AO','letters':/[\uA734]/g}, {'base':'AU','letters':/[\uA736]/g}, {'base':'AV','letters':/[\uA738\uA73A]/g}, {'base':'AY','letters':/[\uA73C]/g}, {'base':'B', 'letters':/[\u0042\u24B7\uFF22\u1E02\u1E04\u1E06\u0243\u0182\u0181]/g}, {'base':'C', 'letters':/[\u0043\u24B8\uFF23\u0106\u0108\u010A\u010C\u00C7\u1E08\u0187\u023B\uA73E]/g}, {'base':'D', 'letters':/[\u0044\u24B9\uFF24\u1E0A\u010E\u1E0C\u1E10\u1E12\u1E0E\u0110\u018B\u018A\u0189\uA779]/g}, {'base':'DZ','letters':/[\u01F1\u01C4]/g}, {'base':'Dz','letters':/[\u01F2\u01C5]/g}, {'base':'E', 'letters':/[\u0045\u24BA\uFF25\u00C8\u00C9\u00CA\u1EC0\u1EBE\u1EC4\u1EC2\u1EBC\u0112\u1E14\u1E16\u0114\u0116\u00CB\u1EBA\u011A\u0204\u0206\u1EB8\u1EC6\u0228\u1E1C\u0118\u1E18\u1E1A\u0190\u018E]/g}, {'base':'F', 'letters':/[\u0046\u24BB\uFF26\u1E1E\u0191\uA77B]/g}, {'base':'G', 'letters':/[\u0047\u24BC\uFF27\u01F4\u011C\u1E20\u011E\u0120\u01E6\u0122\u01E4\u0193\uA7A0\uA77D\uA77E]/g}, {'base':'H', 'letters':/[\u0048\u24BD\uFF28\u0124\u1E22\u1E26\u021E\u1E24\u1E28\u1E2A\u0126\u2C67\u2C75\uA78D]/g}, {'base':'I', 'letters':/[\u0049\u24BE\uFF29\u00CC\u00CD\u00CE\u0128\u012A\u012C\u0130\u00CF\u1E2E\u1EC8\u01CF\u0208\u020A\u1ECA\u012E\u1E2C\u0197]/g}, {'base':'J', 'letters':/[\u004A\u24BF\uFF2A\u0134\u0248]/g}, {'base':'K', 'letters':/[\u004B\u24C0\uFF2B\u1E30\u01E8\u1E32\u0136\u1E34\u0198\u2C69\uA740\uA742\uA744\uA7A2]/g}, {'base':'L', 'letters':/[\u004C\u24C1\uFF2C\u013F\u0139\u013D\u1E36\u1E38\u013B\u1E3C\u1E3A\u0141\u023D\u2C62\u2C60\uA748\uA746\uA780]/g}, {'base':'LJ','letters':/[\u01C7]/g}, {'base':'Lj','letters':/[\u01C8]/g}, {'base':'M', 'letters':/[\u004D\u24C2\uFF2D\u1E3E\u1E40\u1E42\u2C6E\u019C]/g}, {'base':'N', 'letters':/[\u004E\u24C3\uFF2E\u01F8\u0143\u00D1\u1E44\u0147\u1E46\u0145\u1E4A\u1E48\u0220\u019D\uA790\uA7A4]/g}, {'base':'NJ','letters':/[\u01CA]/g}, {'base':'Nj','letters':/[\u01CB]/g}, {'base':'O', 'letters':/[\u004F\u24C4\uFF2F\u00D2\u00D3\u00D4\u1ED2\u1ED0\u1ED6\u1ED4\u00D5\u1E4C\u022C\u1E4E\u014C\u1E50\u1E52\u014E\u022E\u0230\u00D6\u022A\u1ECE\u0150\u01D1\u020C\u020E\u01A0\u1EDC\u1EDA\u1EE0\u1EDE\u1EE2\u1ECC\u1ED8\u01EA\u01EC\u00D8\u01FE\u0186\u019F\uA74A\uA74C]/g}, {'base':'OI','letters':/[\u01A2]/g}, {'base':'OO','letters':/[\uA74E]/g}, {'base':'OU','letters':/[\u0222]/g}, {'base':'P', 'letters':/[\u0050\u24C5\uFF30\u1E54\u1E56\u01A4\u2C63\uA750\uA752\uA754]/g}, {'base':'Q', 'letters':/[\u0051\u24C6\uFF31\uA756\uA758\u024A]/g}, {'base':'R', 'letters':/[\u0052\u24C7\uFF32\u0154\u1E58\u0158\u0210\u0212\u1E5A\u1E5C\u0156\u1E5E\u024C\u2C64\uA75A\uA7A6\uA782]/g}, {'base':'S', 'letters':/[\u0053\u24C8\uFF33\u1E9E\u015A\u1E64\u015C\u1E60\u0160\u1E66\u1E62\u1E68\u0218\u015E\u2C7E\uA7A8\uA784]/g}, {'base':'T', 'letters':/[\u0054\u24C9\uFF34\u1E6A\u0164\u1E6C\u021A\u0162\u1E70\u1E6E\u0166\u01AC\u01AE\u023E\uA786]/g}, {'base':'TZ','letters':/[\uA728]/g}, {'base':'U', 'letters':/[\u0055\u24CA\uFF35\u00D9\u00DA\u00DB\u0168\u1E78\u016A\u1E7A\u016C\u00DC\u01DB\u01D7\u01D5\u01D9\u1EE6\u016E\u0170\u01D3\u0214\u0216\u01AF\u1EEA\u1EE8\u1EEE\u1EEC\u1EF0\u1EE4\u1E72\u0172\u1E76\u1E74\u0244]/g}, {'base':'V', 'letters':/[\u0056\u24CB\uFF36\u1E7C\u1E7E\u01B2\uA75E\u0245]/g}, {'base':'VY','letters':/[\uA760]/g}, {'base':'W', 'letters':/[\u0057\u24CC\uFF37\u1E80\u1E82\u0174\u1E86\u1E84\u1E88\u2C72]/g}, {'base':'X', 'letters':/[\u0058\u24CD\uFF38\u1E8A\u1E8C]/g}, {'base':'Y', 'letters':/[\u0059\u24CE\uFF39\u1EF2\u00DD\u0176\u1EF8\u0232\u1E8E\u0178\u1EF6\u1EF4\u01B3\u024E\u1EFE]/g}, {'base':'Z', 'letters':/[\u005A\u24CF\uFF3A\u0179\u1E90\u017B\u017D\u1E92\u1E94\u01B5\u0224\u2C7F\u2C6B\uA762]/g}, {'base':'a', 'letters':/[\u0061\u24D0\uFF41\u1E9A\u00E0\u00E1\u00E2\u1EA7\u1EA5\u1EAB\u1EA9\u00E3\u0101\u0103\u1EB1\u1EAF\u1EB5\u1EB3\u0227\u01E1\u00E4\u01DF\u1EA3\u00E5\u01FB\u01CE\u0201\u0203\u1EA1\u1EAD\u1EB7\u1E01\u0105\u2C65\u0250]/g}, {'base':'aa','letters':/[\uA733]/g}, {'base':'ae','letters':/[\u00E6\u01FD\u01E3]/g}, {'base':'ao','letters':/[\uA735]/g}, {'base':'au','letters':/[\uA737]/g}, {'base':'av','letters':/[\uA739\uA73B]/g}, {'base':'ay','letters':/[\uA73D]/g}, {'base':'b', 'letters':/[\u0062\u24D1\uFF42\u1E03\u1E05\u1E07\u0180\u0183\u0253]/g}, {'base':'c', 'letters':/[\u0063\u24D2\uFF43\u0107\u0109\u010B\u010D\u00E7\u1E09\u0188\u023C\uA73F\u2184]/g}, {'base':'d', 'letters':/[\u0064\u24D3\uFF44\u1E0B\u010F\u1E0D\u1E11\u1E13\u1E0F\u0111\u018C\u0256\u0257\uA77A]/g}, {'base':'dz','letters':/[\u01F3\u01C6]/g}, {'base':'e', 'letters':/[\u0065\u24D4\uFF45\u00E8\u00E9\u00EA\u1EC1\u1EBF\u1EC5\u1EC3\u1EBD\u0113\u1E15\u1E17\u0115\u0117\u00EB\u1EBB\u011B\u0205\u0207\u1EB9\u1EC7\u0229\u1E1D\u0119\u1E19\u1E1B\u0247\u025B\u01DD]/g}, {'base':'f', 'letters':/[\u0066\u24D5\uFF46\u1E1F\u0192\uA77C]/g}, {'base':'g', 'letters':/[\u0067\u24D6\uFF47\u01F5\u011D\u1E21\u011F\u0121\u01E7\u0123\u01E5\u0260\uA7A1\u1D79\uA77F]/g}, {'base':'h', 'letters':/[\u0068\u24D7\uFF48\u0125\u1E23\u1E27\u021F\u1E25\u1E29\u1E2B\u1E96\u0127\u2C68\u2C76\u0265]/g}, {'base':'hv','letters':/[\u0195]/g}, {'base':'i', 'letters':/[\u0069\u24D8\uFF49\u00EC\u00ED\u00EE\u0129\u012B\u012D\u00EF\u1E2F\u1EC9\u01D0\u0209\u020B\u1ECB\u012F\u1E2D\u0268\u0131]/g}, {'base':'j', 'letters':/[\u006A\u24D9\uFF4A\u0135\u01F0\u0249]/g}, {'base':'k', 'letters':/[\u006B\u24DA\uFF4B\u1E31\u01E9\u1E33\u0137\u1E35\u0199\u2C6A\uA741\uA743\uA745\uA7A3]/g}, {'base':'l', 'letters':/[\u006C\u24DB\uFF4C\u0140\u013A\u013E\u1E37\u1E39\u013C\u1E3D\u1E3B\u017F\u0142\u019A\u026B\u2C61\uA749\uA781\uA747]/g}, {'base':'lj','letters':/[\u01C9]/g}, {'base':'m', 'letters':/[\u006D\u24DC\uFF4D\u1E3F\u1E41\u1E43\u0271\u026F]/g}, {'base':'n', 'letters':/[\u006E\u24DD\uFF4E\u01F9\u0144\u00F1\u1E45\u0148\u1E47\u0146\u1E4B\u1E49\u019E\u0272\u0149\uA791\uA7A5]/g}, {'base':'nj','letters':/[\u01CC]/g}, {'base':'o', 'letters':/[\u006F\u24DE\uFF4F\u00F2\u00F3\u00F4\u1ED3\u1ED1\u1ED7\u1ED5\u00F5\u1E4D\u022D\u1E4F\u014D\u1E51\u1E53\u014F\u022F\u0231\u00F6\u022B\u1ECF\u0151\u01D2\u020D\u020F\u01A1\u1EDD\u1EDB\u1EE1\u1EDF\u1EE3\u1ECD\u1ED9\u01EB\u01ED\u00F8\u01FF\u0254\uA74B\uA74D\u0275]/g}, {'base':'oi','letters':/[\u01A3]/g}, {'base':'ou','letters':/[\u0223]/g}, {'base':'oo','letters':/[\uA74F]/g}, {'base':'p','letters':/[\u0070\u24DF\uFF50\u1E55\u1E57\u01A5\u1D7D\uA751\uA753\uA755]/g}, {'base':'q','letters':/[\u0071\u24E0\uFF51\u024B\uA757\uA759]/g}, {'base':'r','letters':/[\u0072\u24E1\uFF52\u0155\u1E59\u0159\u0211\u0213\u1E5B\u1E5D\u0157\u1E5F\u024D\u027D\uA75B\uA7A7\uA783]/g}, {'base':'s','letters':/[\u0073\u24E2\uFF53\u00DF\u015B\u1E65\u015D\u1E61\u0161\u1E67\u1E63\u1E69\u0219\u015F\u023F\uA7A9\uA785\u1E9B]/g}, {'base':'t','letters':/[\u0074\u24E3\uFF54\u1E6B\u1E97\u0165\u1E6D\u021B\u0163\u1E71\u1E6F\u0167\u01AD\u0288\u2C66\uA787]/g}, {'base':'tz','letters':/[\uA729]/g}, {'base':'u','letters':/[\u0075\u24E4\uFF55\u00F9\u00FA\u00FB\u0169\u1E79\u016B\u1E7B\u016D\u00FC\u01DC\u01D8\u01D6\u01DA\u1EE7\u016F\u0171\u01D4\u0215\u0217\u01B0\u1EEB\u1EE9\u1EEF\u1EED\u1EF1\u1EE5\u1E73\u0173\u1E77\u1E75\u0289]/g}, {'base':'v','letters':/[\u0076\u24E5\uFF56\u1E7D\u1E7F\u028B\uA75F\u028C]/g}, {'base':'vy','letters':/[\uA761]/g}, {'base':'w','letters':/[\u0077\u24E6\uFF57\u1E81\u1E83\u0175\u1E87\u1E85\u1E98\u1E89\u2C73]/g}, {'base':'x','letters':/[\u0078\u24E7\uFF58\u1E8B\u1E8D]/g}, {'base':'y','letters':/[\u0079\u24E8\uFF59\u1EF3\u00FD\u0177\u1EF9\u0233\u1E8F\u00FF\u1EF7\u1E99\u1EF5\u01B4\u024F\u1EFF]/g}, {'base':'z','letters':/[\u007A\u24E9\uFF5A\u017A\u1E91\u017C\u017E\u1E93\u1E95\u01B6\u0225\u0240\u2C6C\uA763]/g} ]; for(var i=0; i<defaultDiacriticsRemovalMap.length; i++) { str = str.replace(defaultDiacriticsRemovalMap[i].letters, defaultDiacriticsRemovalMap[i].base); } return str; }讨论(0) -
I think this might work a little cleaner/better (though I haven't test it's performance):
String.prototype.stripAccents = function() { var translate_re = /[àáâãäçèéêëìíîïñòóôõöùúûüýÿÀÁÂÃÄÇÈÉÊËÌÍÎÏÑÒÓÔÕÖÙÚÛÜÝ]/g; var translate = 'aaaaaceeeeiiiinooooouuuuyyAAAAACEEEEIIIINOOOOOUUUUY'; return (this.replace(translate_re, function(match){ return translate.substr(translate_re.source.indexOf(match)-1, 1); }) ); };Or if you are still too worried about performance, let's get the best of both worlds:
String.prototype.stripAccents = function() { var in_chrs = 'àáâãäçèéêëìíîïñòóôõöùúûüýÿÀÁÂÃÄÇÈÉÊËÌÍÎÏÑÒÓÔÕÖÙÚÛÜÝ', out_chrs = 'aaaaaceeeeiiiinooooouuuuyyAAAAACEEEEIIIINOOOOOUUUUY', transl = {}; eval('var chars_rgx = /['+in_chrs+']/g'); for(var i = 0; i < in_chrs.length; i++){ transl[in_chrs.charAt(i)] = out_chrs.charAt(i); } return this.replace(chars_rgx, function(match){ return transl[match]; }); };
EDIT (by @Tomalak)
I appreciate the idea. However, there are several things wrong with the implementation, as outlined in the comment below.
Here is how I would implement it.
var stripAccents = (function () { var in_chrs = 'àáâãäçèéêëìíîïñòóôõöùúûüýÿÀÁÂÃÄÇÈÉÊËÌÍÎÏÑÒÓÔÕÖÙÚÛÜÝ', out_chrs = 'aaaaaceeeeiiiinooooouuuuyyAAAAACEEEEIIIINOOOOOUUUUY', chars_rgx = new RegExp('[' + in_chrs + ']', 'g'), transl = {}, i, lookup = function (m) { return transl[m] || m; }; for (i=0; i<in_chrs.length; i++) { transl[ in_chrs[i] ] = out_chrs[i]; } return function (s) { return s.replace(chars_rgx, lookup); } })();讨论(0) -
If you're looking specifically for a way to convert accented characters to non-accented characters, rather than a way to sort accented characters, with a little finagling, the String.localeCompare function can be manipulated to find the basic latin characters that match the extended ones. For example, you might want to produce a human friendly url slug from a page title. If so, you can do something like this:
var baseChars = []; for (var i = 97; i < 97 + 26; i++) { baseChars.push(String.fromCharCode(i)); } //if needed, handle fancy compound characters baseChars = baseChars.concat('ss,aa,ae,ao,au,av,ay,dz,hv,lj,nj,oi,ou,oo,tz,vy'.split(',')); function isUpperCase(c) { return c !== c.toLocaleLowerCase() } function toBaseChar(c, opts) { opts = opts || {}; //if (!('nonAlphaChar' in opts)) opts.nonAlphaChar = ''; //if (!('noMatchChar' in opts)) opts.noMatchChar = ''; if (!('locale' in opts)) opts.locale = 'en'; var cOpts = {sensitivity: 'base'}; //exit early for any non-alphabetical character if (c.localeCompare('9', opts.locale, cOpts) <= 0) return opts.nonAlphaChar === undefined ? c : opts.nonAlphaChar; for (var i = 0; i < baseChars.length; i++) { var baseChar = baseChars[i]; var comp = c.localeCompare(baseChar, opts.locale, cOpts); if (comp == 0) return (isUpperCase(c)) ? baseChar.toUpperCase() : baseChar; } return opts.noMatchChar === undefined ? c : opts.noMatchChar; } function latinify(str, opts) { return str.replace(/[^\w\s\d]/g, function(c) { return toBaseChar(c, opts); }) } // Example: console.log(latinify('Čeština Tsėhesenėstsestotse Tshivenḓa Emigliàn–Rumagnòl Slovenščina Português Tiếng Việt Straße')) // "Cestina Tsehesenestsestotse Tshivenda Emiglian–Rumagnol Slovenscina Portugues Tieng Viet Strasse"This should perform quite well, but if further optimization were needed, a binary search could be used with
localeCompareas the comparator to locate the base character. Note that case is preserved, and options allow for either preserving, replacing, or removing characters that aren't alphabetical, or do not have matching latin characters they can be replaced with. This implementation is faster and more flexible, and should work with new characters as they are added. The disadvantage is that compound characters like 'ꝡ' have to be handled specifically, if they need to be supported.讨论(0) -
Simply should be normalized chain and run a replacement codes:
var str = "Letras Á É Í Ó Ú Ñ - á é í ó ú ñ..."; console.log (str.normalize ("NFKD").replace (/[\u0300-\u036F]/g, "")); // Letras A E I O U N - a e i o u n...See normalize
Then you can use this function:
function noTilde (s) { if (s.normalize != undefined) { s = s.normalize ("NFKD"); } return s.replace (/[\u0300-\u036F]/g, ""); }讨论(0) -
A direct port to javascript of Kierons solution: https://github.com/rwarasaurus/nano/blob/master/system/helpers.php#L61-73:
/** * Normalise a string replacing foreign characters * * @param {String} str * @return {String} str */ var normalize = (function () { var a = ['À', 'Á', 'Â', 'Ã', 'Ä', 'Å', 'Æ', 'Ç', 'È', 'É', 'Ê', 'Ë', 'Ì', 'Í', 'Î', 'Ï', 'Ð', 'Ñ', 'Ò', 'Ó', 'Ô', 'Õ', 'Ö', 'Ø', 'Ù', 'Ú', 'Û', 'Ü', 'Ý', 'ß', 'à', 'á', 'â', 'ã', 'ä', 'å', 'æ', 'ç', 'è', 'é', 'ê', 'ë', 'ì', 'í', 'î', 'ï', 'ñ', 'ò', 'ó', 'ô', 'õ', 'ö', 'ø', 'ù', 'ú', 'û', 'ü', 'ý', 'ÿ', 'Ā', 'ā', 'Ă', 'ă', 'Ą', 'ą', 'Ć', 'ć', 'Ĉ', 'ĉ', 'Ċ', 'ċ', 'Č', 'č', 'Ď', 'ď', 'Đ', 'đ', 'Ē', 'ē', 'Ĕ', 'ĕ', 'Ė', 'ė', 'Ę', 'ę', 'Ě', 'ě', 'Ĝ', 'ĝ', 'Ğ', 'ğ', 'Ġ', 'ġ', 'Ģ', 'ģ', 'Ĥ', 'ĥ', 'Ħ', 'ħ', 'Ĩ', 'ĩ', 'Ī', 'ī', 'Ĭ', 'ĭ', 'Į', 'į', 'İ', 'ı', 'IJ', 'ij', 'Ĵ', 'ĵ', 'Ķ', 'ķ', 'Ĺ', 'ĺ', 'Ļ', 'ļ', 'Ľ', 'ľ', 'Ŀ', 'ŀ', 'Ł', 'ł', 'Ń', 'ń', 'Ņ', 'ņ', 'Ň', 'ň', 'ʼn', 'Ō', 'ō', 'Ŏ', 'ŏ', 'Ő', 'ő', 'Œ', 'œ', 'Ŕ', 'ŕ', 'Ŗ', 'ŗ', 'Ř', 'ř', 'Ś', 'ś', 'Ŝ', 'ŝ', 'Ş', 'ş', 'Š', 'š', 'Ţ', 'ţ', 'Ť', 'ť', 'Ŧ', 'ŧ', 'Ũ', 'ũ', 'Ū', 'ū', 'Ŭ', 'ŭ', 'Ů', 'ů', 'Ű', 'ű', 'Ų', 'ų', 'Ŵ', 'ŵ', 'Ŷ', 'ŷ', 'Ÿ', 'Ź', 'ź', 'Ż', 'ż', 'Ž', 'ž', 'ſ', 'ƒ', 'Ơ', 'ơ', 'Ư', 'ư', 'Ǎ', 'ǎ', 'Ǐ', 'ǐ', 'Ǒ', 'ǒ', 'Ǔ', 'ǔ', 'Ǖ', 'ǖ', 'Ǘ', 'ǘ', 'Ǚ', 'ǚ', 'Ǜ', 'ǜ', 'Ǻ', 'ǻ', 'Ǽ', 'ǽ', 'Ǿ', 'ǿ']; var b = ['A', 'A', 'A', 'A', 'A', 'A', 'AE', 'C', 'E', 'E', 'E', 'E', 'I', 'I', 'I', 'I', 'D', 'N', 'O', 'O', 'O', 'O', 'O', 'O', 'U', 'U', 'U', 'U', 'Y', 's', 'a', 'a', 'a', 'a', 'a', 'a', 'ae', 'c', 'e', 'e', 'e', 'e', 'i', 'i', 'i', 'i', 'n', 'o', 'o', 'o', 'o', 'o', 'o', 'u', 'u', 'u', 'u', 'y', 'y', 'A', 'a', 'A', 'a', 'A', 'a', 'C', 'c', 'C', 'c', 'C', 'c', 'C', 'c', 'D', 'd', 'D', 'd', 'E', 'e', 'E', 'e', 'E', 'e', 'E', 'e', 'E', 'e', 'G', 'g', 'G', 'g', 'G', 'g', 'G', 'g', 'H', 'h', 'H', 'h', 'I', 'i', 'I', 'i', 'I', 'i', 'I', 'i', 'I', 'i', 'IJ', 'ij', 'J', 'j', 'K', 'k', 'L', 'l', 'L', 'l', 'L', 'l', 'L', 'l', 'l', 'l', 'N', 'n', 'N', 'n', 'N', 'n', 'n', 'O', 'o', 'O', 'o', 'O', 'o', 'OE', 'oe', 'R', 'r', 'R', 'r', 'R', 'r', 'S', 's', 'S', 's', 'S', 's', 'S', 's', 'T', 't', 'T', 't', 'T', 't', 'U', 'u', 'U', 'u', 'U', 'u', 'U', 'u', 'U', 'u', 'U', 'u', 'W', 'w', 'Y', 'y', 'Y', 'Z', 'z', 'Z', 'z', 'Z', 'z', 's', 'f', 'O', 'o', 'U', 'u', 'A', 'a', 'I', 'i', 'O', 'o', 'U', 'u', 'U', 'u', 'U', 'u', 'U', 'u', 'U', 'u', 'A', 'a', 'AE', 'ae', 'O', 'o']; return function (str) { var i = a.length; while (i--) str = str.replace(a[i], b[i]); return str; }; }());And a slightly modified version, using a char-map instead of two arrays:
To compare these two methods I made a simple benchmark: http://jsperf.com/replace-foreign-characters
/** * Normalise a string replacing foreign characters * * @param {String} str * @return {String} */ var normalize = (function () { var map = { "À": "A", "Á": "A", "Â": "A", "Ã": "A", "Ä": "A", "Å": "A", "Æ": "AE", "Ç": "C", "È": "E", "É": "E", "Ê": "E", "Ë": "E", "Ì": "I", "Í": "I", "Î": "I", "Ï": "I", "Ð": "D", "Ñ": "N", "Ò": "O", "Ó": "O", "Ô": "O", "Õ": "O", "Ö": "O", "Ø": "O", "Ù": "U", "Ú": "U", "Û": "U", "Ü": "U", "Ý": "Y", "ß": "s", "à": "a", "á": "a", "â": "a", "ã": "a", "ä": "a", "å": "a", "æ": "ae", "ç": "c", "è": "e", "é": "e", "ê": "e", "ë": "e", "ì": "i", "í": "i", "î": "i", "ï": "i", "ñ": "n", "ò": "o", "ó": "o", "ô": "o", "õ": "o", "ö": "o", "ø": "o", "ù": "u", "ú": "u", "û": "u", "ü": "u", "ý": "y", "ÿ": "y", "Ā": "A", "ā": "a", "Ă": "A", "ă": "a", "Ą": "A", "ą": "a", "Ć": "C", "ć": "c", "Ĉ": "C", "ĉ": "c", "Ċ": "C", "ċ": "c", "Č": "C", "č": "c", "Ď": "D", "ď": "d", "Đ": "D", "đ": "d", "Ē": "E", "ē": "e", "Ĕ": "E", "ĕ": "e", "Ė": "E", "ė": "e", "Ę": "E", "ę": "e", "Ě": "E", "ě": "e", "Ĝ": "G", "ĝ": "g", "Ğ": "G", "ğ": "g", "Ġ": "G", "ġ": "g", "Ģ": "G", "ģ": "g", "Ĥ": "H", "ĥ": "h", "Ħ": "H", "ħ": "h", "Ĩ": "I", "ĩ": "i", "Ī": "I", "ī": "i", "Ĭ": "I", "ĭ": "i", "Į": "I", "į": "i", "İ": "I", "ı": "i", "IJ": "IJ", "ij": "ij", "Ĵ": "J", "ĵ": "j", "Ķ": "K", "ķ": "k", "Ĺ": "L", "ĺ": "l", "Ļ": "L", "ļ": "l", "Ľ": "L", "ľ": "l", "Ŀ": "L", "ŀ": "l", "Ł": "l", "ł": "l", "Ń": "N", "ń": "n", "Ņ": "N", "ņ": "n", "Ň": "N", "ň": "n", "ʼn": "n", "Ō": "O", "ō": "o", "Ŏ": "O", "ŏ": "o", "Ő": "O", "ő": "o", "Œ": "OE", "œ": "oe", "Ŕ": "R", "ŕ": "r", "Ŗ": "R", "ŗ": "r", "Ř": "R", "ř": "r", "Ś": "S", "ś": "s", "Ŝ": "S", "ŝ": "s", "Ş": "S", "ş": "s", "Š": "S", "š": "s", "Ţ": "T", "ţ": "t", "Ť": "T", "ť": "t", "Ŧ": "T", "ŧ": "t", "Ũ": "U", "ũ": "u", "Ū": "U", "ū": "u", "Ŭ": "U", "ŭ": "u", "Ů": "U", "ů": "u", "Ű": "U", "ű": "u", "Ų": "U", "ų": "u", "Ŵ": "W", "ŵ": "w", "Ŷ": "Y", "ŷ": "y", "Ÿ": "Y", "Ź": "Z", "ź": "z", "Ż": "Z", "ż": "z", "Ž": "Z", "ž": "z", "ſ": "s", "ƒ": "f", "Ơ": "O", "ơ": "o", "Ư": "U", "ư": "u", "Ǎ": "A", "ǎ": "a", "Ǐ": "I", "ǐ": "i", "Ǒ": "O", "ǒ": "o", "Ǔ": "U", "ǔ": "u", "Ǖ": "U", "ǖ": "u", "Ǘ": "U", "ǘ": "u", "Ǚ": "U", "ǚ": "u", "Ǜ": "U", "ǜ": "u", "Ǻ": "A", "ǻ": "a", "Ǽ": "AE", "ǽ": "ae", "Ǿ": "O", "ǿ": "o" }, nonWord = /\W/g, mapping = function (c) { return map[c] || c; }; return function (str) { return str.replace(nonWord, mapping); }; }());讨论(0)
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