The method is used to refresh the menu when DOM operations add or replace a menu item. For example, if you add a new menu item through "menu.append," then you can use the refresh method to make sure that the new menu item appears in the menu.

$(function () {
    var returnsValue; // Type:  any
    returnsValue = $(".selector").wijmenu("refresh");
});

function refresh() : any;

//Adds a new item and refresh menu.
menu.append("<li><a href='#'>new item</a></li>").wijmenu("refresh");