Original von ∂, geändert von Dapete (einige HTML-4-Entitys, die nicht ersetzt werden sollten, entfernt; zur Sicherheit allgemein nur Entitys mit Code > 127 ersetzen)
/** adds a button to the editform to convert entities to unicode */
window.addEventListener("DOMContentLoaded", function() {
/** converts html-entities into unicode characters */
function entitiesToUnicode(s) {
return s.replace(
// hex entities
/&#x([0-9a-f]{1,4});/gi,
function(dollar0, dollar1) {
var v = parseInt(dollar1, 16);
return (v > 127) ? String.fromCharCode(v) : dollar0;
}
).replace(
// decimal entities
/&#([0-9]{1,5});/g,
function(dollar0, dollar1) {
var v = parseInt(dollar1, 10);
return (v > 127) ? String.fromCharCode(v) : dollar0;
}
).replace(
// named entities
/&([a-z]+);/gi,
function(dollar0, dollar1) {
var c = html4Entities[dollar1];
return (c && c > 127) ? String.fromCharCode(c) : dollar0;
}
);
}
/** maps entity names to character codes */
var html4Entities = {
iexcl: 161,
cent: 162,
pound: 163,
curren: 164,
yen: 165,
brvbar: 166,
sect: 167,
uml: 168,
copy: 169,
ordf: 170,
laquo: 171,
not: 172,
shy: 173,
reg: 174,
macr: 175,
deg: 176,
plusmn: 177,
sup2: 178,
sup3: 179,
acute: 180,
micro: 181,
para: 182,
middot: 183,
cedil: 184,
sup1: 185,
ordm: 186,
raquo: 187,
frac14: 188,
frac12: 189,
frac34: 190,
iquest: 191,
Agrave: 192,
Aacute: 193,
Acirc: 194,
Atilde: 195,
Auml: 196,
Aring: 197,
AElig: 198,
Ccedil: 199,
Egrave: 200,
Eacute: 201,
Ecirc: 202,
Euml: 203,
Igrave: 204,
Iacute: 205,
Icirc: 206,
Iuml: 207,
ETH: 208,
Ntilde: 209,
Ograve: 210,
Oacute: 211,
Ocirc: 212,
Otilde: 213,
Ouml: 214,
times: 215,
Oslash: 216,
Ugrave: 217,
Uacute: 218,
Ucirc: 219,
Uuml: 220,
Yacute: 221,
THORN: 222,
szlig: 223,
agrave: 224,
aacute: 225,
acirc: 226,
atilde: 227,
auml: 228,
aring: 229,
aelig: 230,
ccedil: 231,
egrave: 232,
eacute: 233,
ecirc: 234,
euml: 235,
igrave: 236,
iacute: 237,
icirc: 238,
iuml: 239,
eth: 240,
ntilde: 241,
ograve: 242,
oacute: 243,
ocirc: 244,
otilde: 245,
ouml: 246,
divide: 247,
oslash: 248,
ugrave: 249,
uacute: 250,
ucirc: 251,
uuml: 252,
yacute: 253,
thorn: 254,
yuml: 255,
OElig: 338,
oelig: 339,
Scaron: 352,
scaron: 353,
Yuml: 376,
fnof: 402,
circ: 710,
tilde: 732,
Alpha: 913,
Beta: 914,
Gamma: 915,
Delta: 916,
Epsilon: 917,
Zeta: 918,
Eta: 919,
Theta: 920,
Iota: 921,
Kappa: 922,
Lambda: 923,
Mu: 924,
Nu: 925,
Xi: 926,
Omicron: 927,
Pi: 928,
Rho: 929,
Sigma: 931,
Tau: 932,
Upsilon: 933,
Phi: 934,
Chi: 935,
Psi: 936,
Omega: 937,
alpha: 945,
beta: 946,
gamma: 947,
delta: 948,
epsilon: 949,
zeta: 950,
eta: 951,
theta: 952,
iota: 953,
kappa: 954,
lambda: 955,
mu: 956,
nu: 957,
xi: 958,
omicron: 959,
pi: 960,
rho: 961,
sigmaf: 962,
sigma: 963,
tau: 964,
upsilon: 965,
phi: 966,
chi: 967,
psi: 968,
omega: 969,
thetasym: 977,
upsih: 978,
piv: 982,
zwnj: 8204,
zwj: 8205,
lrm: 8206,
rlm: 8207,
ndash: 8211,
mdash: 8212,
lsquo: 8216,
rsquo: 8217,
sbquo: 8218,
ldquo: 8220,
rdquo: 8221,
bdquo: 8222,
dagger: 8224,
Dagger: 8225,
bull: 8226,
hellip: 8230,
permil: 8240,
prime: 8242,
Prime: 8243,
lsaquo: 8249,
rsaquo: 8250,
oline: 8254,
frasl: 8260,
euro: 8364,
image: 8465,
weierp: 8472,
real: 8476,
trade: 8482,
alefsym: 8501,
larr: 8592,
uarr: 8593,
rarr: 8594,
darr: 8595,
harr: 8596,
crarr: 8629,
lArr: 8656,
uArr: 8657,
rArr: 8658,
dArr: 8659,
hArr: 8660,
forall: 8704,
part: 8706,
exist: 8707,
empty: 8709,
nabla: 8711,
isin: 8712,
notin: 8713,
ni: 8715,
prod: 8719,
sum: 8721,
minus: 8722,
lowast: 8727,
radic: 8730,
prop: 8733,
infin: 8734,
ang: 8736,
and: 8743,
or: 8744,
cap: 8745,
cup: 8746,
int: 8747,
there4: 8756,
sim: 8764,
cong: 8773,
asymp: 8776,
ne: 8800,
equiv: 8801,
le: 8804,
ge: 8805,
sub: 8834,
sup: 8835,
nsub: 8836,
sube: 8838,
supe: 8839,
oplus: 8853,
otimes: 8855,
perp: 8869,
sdot: 8901,
lceil: 8968,
rceil: 8969,
lfloor: 8970,
rfloor: 8971,
lang: 9001,
rang: 9002,
loz: 9674,
spades: 9824,
clubs: 9827,
hearts: 9829,
diams: 9830
};
// find editor
var form = document.forms['editform'];
if (!form) return;
var tb = form.elements['wpTextbox1'];
if (!tb) return;
tb.value = tb.value
// create button
var a = document.createElement("a");
a.textContent = "entitiesToUnicode";
a.title = "converts HTML 4, hex and decimal entities into characters";
a.style.cursor = "pointer";
a.onclick = function() { tb.value = entitiesToUnicode(tb.value); }
// add button
form.parentNode.insertBefore(a, form);
}, false);