jQuery Snippets

changeSelectLabels.js

/**
 * <option data-label-male="Dude" data-label-female="Dudette">Dude</option>
 */
$.fn.changeSelectLabels = function(key) {
	key = 'label-' + key;
	return $(this).each(function() {
		$(this).find('option').each(function() {
			var option = $(this),
				label = option.data(key);
			if (label)
				option.text(label);
		});
	});
};

filterChars.js

/**
 * Input filter
 */
var filters = {
	rus: "а-яёА-ЯЁ'’ ",
	lat: "a-zA-Z'’ "
};
$.fn.filterChars = function(chars) {
	if (filters[chars]) chars = filters[chars];
	var charRegex = new RegExp('^[' + chars + ']$'),
		stringRegex = new RegExp('[^' + chars + ']', 'g');

	return $(this).each(function() {
		var elem = $(this);
		elem
			.on('keypress', function(e) {
				if (!charRegex.test(String.fromCharCode(e.which)))
					return false;
			})
			.on('input', function(e) {
				elem.val(elem.val().replace(stringRegex, ''));
			});
	});
};

findWithRoot.js

/**
 * $.find() that finds in root element too
 */
$.fn.findWithRoot(selector) {
	return this.filter(selector).add(this.find(selector));
};