Convert a String to a valid URL slug

To get an URL slug from a string (a title, a name, etc.) just add this method to the String Class prototype:

String.prototype.toSlug = function ( ) {
 var from = 'àáäâèéëêìíïîòóöôùúüûñç',
 to = 'aaaaeeeeiiiioooouuuunc',
 expression = new RegExp(from.split('').join('|'), 'g'),
 str = this.toString();
 return str.toLowerCase().replace(expression, function ( m ) {
 return to[from.indexOf(m)];
 }).replace(/[^a-z0-9\-]+/g, '-');
}

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