question with proto inheritance

Object->uiElement->note.js

var uiElement = {
    compiledTemplate: undefined,
    template: undefined,
    toHTML: function(newTemplate) {
        if (typeof this.compiledTemplate !== 'function' || newTemplate) {
            this.compileTemplate(newTemplate || this.template);
        }
        return this.compiledTemplate(this.toObjectLiteral);
    },
    compileTemplate: function(newTemplate) {
        if (typeof newTemplate === 'string') {
            this.template = newTemplate
        }
        compiledTemplate = _.template(this.template);
    }
}
var note = {
    instructor: {},
    user: {},
    course: {},
    session: {},
    date: undefined,
    firstViewDate: undefined,
    note: undefined,
    domReference: undefined,
    showNote: function() {

    }
}