Slugify a string

gistfile1.js

/**
 * Convert a human-readable string into a slug
 * 
 * 'Sample input string!' gets converted to 'sample-input-string'
 *
 * @param {string} string Source string
 * @param {integer} maxLength Maximum length of slug (defaults to 100)
 * @return {string} Slug
 */
var convertToSlug = function (string, maxLength) {
	maxLength = maxLength || 100;
	var rx = new RegExp('[^a-z0-9-]+', 'g');
	var slug = string.toLowerCase().replace(rx, '-').substr(0, maxLength);
	if (slug.charAt(slug.length - 1) == '-') {
		slug = slug.substr(0, slug.length - 1);
	}
	return slug;
}


// Usage:
$("#name").keyup(function () {
	$("#slug").val(convertToSlug($(this).val()));
});