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

javascript-remove-accents.js

function slugify(str) {
  var 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',    
    '': '´|`|"|!|@|!|#|\\$|%|¨|&|\\(|\\)|\\=|\\+|\\{|\\}|\\[|\\]|ª|º|~|\\^|<|>|,|\\.|;|:|\\?|/|°|\\*|\\||\\-|_',
  };

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