CheckBox Range Selection

checkboxRangeSelection.js

(function ($) {
	$.fn.enableCheckboxRangeSelection = function () {
		var lastCheckbox = null;
		var $spec = this;
		$spec.unbind("click.checkboxrange");
		$spec.bind("click.checkboxrange", function (e) {
			if (lastCheckbox != null && (e.shiftKey || e.metaKey)) {
				$spec.slice(
	  Math.min($spec.index(lastCheckbox), $spec.index(e.target)),
	  Math.max($spec.index(lastCheckbox), $spec.index(e.target)) + 1
	).attr({ checked: e.target.checked ? "checked" : "" });
			}
			lastCheckbox = e.target;
		});
	};
})(jQuery);