An Javascript function to remove accents, spaces and set lower case from an input string.

javascript-remove-accents.js

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;
}