icheck-ko.js

        /**
         * iCheck integration bindingHandler
         *
         * This handler will initialise checkboxes and update them accordingly in both ways
         *
         */
        ko.bindingHandlers.iCheck = {
            /**
             * We set an event listener: if a checkbox is changed, we update the observable accordingly.
             * @param el
             * @param valueAccessor
             */
            init: (el, valueAccessor: Function) => {
                var observable = valueAccessor();
                $(el).on("ifChanged", function() {
                    observable(this.checked);
                });
            },

            /**
             * If the observable is changed, we update the checkbox UI accordingly.
             * @param el
             * @param valueAccessor
             */
            update: (el, valueAccessor) => {
                var val : boolean = ko.utils.unwrapObservable(valueAccessor());
                if (val) {
                    $(el).iCheck('check');
                } else {
                    $(el).iCheck('uncheck');
                }
            }
        };