gistfile1.js

    var Member = function() {
        this.FirstName = ko.observable("");
        this.LastName = ko.observable("");
        this.Email = ko.observable("");
        this.DisplayName = ko.computed(this.getDisplayName, this);
    };
    CurrentUser.prototype.getDisplayName =  function () {
        return this.FirstName + " " + this.LastName;
    };
    CurrentUser.prototype.update = function(response) {
        this.FirstName(response.Member.FirstName);
        this.LastName(response.Member.LastName);
        this.Email(response.Member.Email);
    };
    CurrentUser.prototype.reset = function() {
        this.FirstName = ko.observable("");
        this.LastName = ko.observable("");
        this.Email = ko.observable("");
    };