JavaScript function to slugify a string

javascript-slugify.js

slugify (text)
{
    return text.toString().toLowerCase()
      .replace(/\s+/g, '-')           // Replace spaces with -
      .replace(/&/g, '')              // Replace & with empty
      .replace(/[^\w\-]+/g, '')       // Remove all non-word chars
      .replace(/\-\-+/g, '-')         // Replace multiple - with single -
      .replace(/^-+/, '')             // Trim - from start of text
      .replace(/-+$/, '')             // Trim - from end of text
      .replace(/-$/, '');             // Remove last -
  }