Javascript Slugify: For accents and other latin characters

slugify.js

function slugify(text) 
{
    var from = "ãàáäâẽèéëêìíïîõòóöôùúüûñç·/_,:;";
    var to   = "aaaaaeeeeeiiiiooooouuuunc------";
    _.each( from, function( character, i ) {
        text = text.replace(new RegExp(from.charAt(i), 'g'), to.charAt(i));
    });
    return text
        .toString()                     // Cast to string
        .toLowerCase()                  // Convert the string to lowercase letters
        .trim()                         // Remove whitespace from both sides of a string
        .replace(/\s+/g, '-')           // Replace spaces with -
        .replace(/&/g, '-y-')           // Replace & with 'and'
        .replace(/[^\w\-]+/g, '')       // Remove all non-word chars
        .replace(/\-\-+/g, '-');        // Replace multiple - with single -
}

A more functional approach

function slugify(text) {
  const from = "ãàáäâẽèéëêìíïîõòóöôùúüûñç·/_,:;"
  const to = "aaaaaeeeeeiiiiooooouuuunc------"

  const newText = text.split('').map(
    (letter, i) => letter.replace(new RegExp(from.charAt(i), 'g'), to.charAt(i)))

  return newText
    .toString()                     // Cast to string
    .toLowerCase()                  // Convert the string to lowercase letters
    .trim()                         // Remove whitespace from both sides of a string
    .replace(/\s+/g, '-')           // Replace spaces with -
    .replace(/&/g, '-y-')           // Replace & with 'and'
    .replace(/[^\w\-]+/g, '')       // Remove all non-word chars
    .replace(/\-\-+/g, '-');        // Replace multiple - with single -
}

This works for me

function slugify(text) {
    const from = 'ãàáäâẽèéëêìíïîõòóöôùúüûñç·/_,:;'
    const to = 'aaaaaeeeeeiiiiooooouuuunc------'

    const newText = Array.from(s)
      .map((c) => {
        const index = [...from].indexOf(c)
        if (index > -1) {
          return c.replace(
            new RegExp(from.charAt(index), 'g'),
            to.charAt(index)
          )
        }
        return c
      })
      .join('')


    return newText
      .toString()                     // Cast to string
      .toLowerCase()                  // Convert the string to lowercase letters
      .trim()                         // Remove whitespace from both sides of a string
      .replace(/\s+/g, '-')           // Replace spaces with -
      .replace(/&/g, '-y-')           // Replace & with 'and'
      .replace(/[^\w\-]+/g, '')       // Remove all non-word chars
      .replace(/\-\-+/g, '-');        // Replace multiple - with single -