An Javascript function to remove accents and others characters from an input string.

javascript-remove-accents.js

// Example: https://codepen.io/marcelo-ribeiro/pen/OJmVOyW

const accentsMap = new Map([
  ["A", "Á|À|Ã|Â|Ä"],
  ["a", "á|à|ã|â|ä"],
  ["E", "É|È|Ê|Ë"],
  ["e", "é|è|ê|ë"],
  ["I", "Í|Ì|Î|Ï"],
  ["i", "í|ì|î|ï"],
  ["O", "Ó|Ò|Ô|Õ|Ö"],
  ["o", "ó|ò|ô|õ|ö"],
  ["U", "Ú|Ù|Û|Ü"],
  ["u", "ú|ù|û|ü"],
  ["C", "Ç"],
  ["c", "ç"],
  ["N", "Ñ"],
  ["n", "ñ"]
]);

const reducer = (acc, [key]) => acc.replace(new RegExp(accentsMap.get(key), "g"), key);

export const removeAccents = (text) => [...accentsMap].reduce(reducer, text);

javascript-slugify-normalize.js

export const slugify = text => text
  .replace(/\s|_|\(|\)/g, "-")
  .normalize("NFD").replace(/\p{Diacritic}/gu, "")
  .toLowerCase()

javascript-slugify.js

// Example: https://codepen.io/marcelo-ribeiro/pen/PomqOvE

const accentsMap = new Map([
  ["-", "\\s|\\.|_"],
  ["a", "á|à|ã|â|ä"],
  ["e", "é|è|ê|ë"],
  ["i", "í|ì|î|ï"],
  ["o", "ó|ò|ô|õ|ö"],
  ["u", "ú|ù|û|ü"],
  ["c", "ç"],
  ["n", "ñ"]
]);

const reducer = (acc, [key]) => acc.replace(new RegExp(accentsMap.get(key), "gi"), key);

export const slugify = (text) => [...accentsMap].reduce(reducer, text.toLowerCase());

javscript-remove-accents-normalize.js

export const removeAccents = text => text.normalize("NFD").replace(/\p{Diacritic}/gu, "")

Excellent work Marcelo, thanks you for sharing.
It didn't replace whitespace well, so I mixed the two lines together and it works like a charm.

``
const slugify = str => {
const map = {
'-' : ' |_',
'a' : 'á|à|ã|â|ä|À|Á|Ã|Â|Ä',
'e' : 'é|è|ê|ë|É|È|Ê|Ë',
'i' : 'í|ì|î|ï|Í|Ì|Î|Ï',
'o' : 'ó|ò|ô|õ|ö|Ó|Ò|Ô|Õ|Ö',
'u' : 'ú|ù|û|ü|Ú|Ù|Û|Ü',
'c' : 'ç|Ç',
'n' : 'ñ|Ñ'
};

for (var pattern in map) {
str = str.replace(new RegExp(map[pattern], 'g'), pattern);
}

return str;
}
``

Thanks @marcelo,

I found this interesting topic on the stackoverflow using String.prototype.normalize()

Remove Accents in a String

const accentsMap = {
  a: 'á|à|ã|â|À|Á|Ã|Â',
  e: 'é|è|ê|É|È|Ê',
  i: 'í|ì|î|Í|Ì|Î',
  o: 'ó|ò|ô|õ|Ó|Ò|Ô|Õ',
  u: 'ú|ù|û|ü|Ú|Ù|Û|Ü',
  c: 'ç|Ç',
  n: 'ñ|Ñ',
};

export const slugify = text => Object.keys(accentsMap).reduce((acc, cur) => acc.replace(new RegExp(accentsMap[cur], 'g'), cur), text);

thanks! and thanks to the author @marcelo-ribeiro

New ES6 version! 😎

Thanks a lot for this snippet.
I improved for ES6 use, in case anyone might want it:

const accentsMap = {
  a: 'á|à|ã|â|À|Á|Ã|Â',
  e: 'é|è|ê|É|È|Ê',
  i: 'í|ì|î|Í|Ì|Î',
  o: 'ó|ò|ô|õ|Ó|Ò|Ô|Õ',
  u: 'ú|ù|û|ü|Ú|Ù|Û|Ü',
  c: 'ç|Ç',
  n: 'ñ|Ñ',
};

export const slugify = text => Object.keys(accentsMap).reduce((acc, cur) => acc.replace(new RegExp(accentsMap[cur], 'g'), cur), text);

Thank you for sharing! I used part of the your code to improve the ES6 version.
I hope you enjoy 😃