Slugify

JavaScript

// - should group the regexDelimiter in case there is more than one character (see last example)

// Potential problem when the delimiter is more than 1 character. Is the fix as simple as this:
// new RegExp("([^a-z0-9" + regexDelimiter + "])", "g")
// new RegExp("([^a-z0-9]|(?:" + regexDelimiter + "))", "g")

// - not sure if all the default separators are appropriate
// - investigate if it is worth to re-order the items in the sanitizer array
// - chain all the operations within the return statement
// - are the currency replacements are appropriate?
// - add a 3rd optional parameter to truncate after a certain character limit (truncat to the nearest delimiter

/**
 * Converts a string to a "URL-safe" slug.
 * Allows for some customization with two optional parameters:
 *
 * @param {string} Delimiter used. If not specified, defaults to a dash "-"
 * @param {array} Adds to the list of non-alphanumeric characters which
 *   will be converted to the delimiter. The default list includes:
 *   ['–', '—', '―', '~', '\\', '/', '|', '+', '\'', '‘', '’', ' ']
 */
if (!String.prototype.slugify) {
    String.prototype.slugify = function (delimiter, separators) {
        var i = separators && separators.length,
            slug = this,
            delimiter = delimiter || '-',
            regexEscape = new RegExp(/[[\/\\^$*+?.()|{}\]]/g),
            regexDelimiter = delimiter.replace(regexEscape, "\\$&"),
            prohibited = new RegExp("([^a-z0-9" + regexDelimiter + "])", "g"),
            consecutive = new RegExp("(" + regexDelimiter + "+)", "g"),
            trim = new RegExp("^" + regexDelimiter + "*(.*?)" + regexDelimiter + "*$"),
            sanitizer = {
                // common latin
                'á': 'a',
                    'à': 'a',
                    'â': 'a',
                    'ä': 'a',
                    'ã': 'a',
                    'æ': 'ae',
                    'ç': 'c',
                    'é': 'e',
                    'è': 'e',
             ...