JavaScript Breadcrumbs navigation

In this code listing I want to demonstrate how to implement "Breadcrumbs" in JavaScript for the pages collection, where page object have a two main key's pageId and parentPageId, and create a new collection sorted by current parents.

Listing 1:

function page(pageId, parentPageId, title) { 
    return this.constructor(pageId, parentPageId, title); }
page.prototype = {
    
    // properties
    pageId: null,
    parentPageId: null,
    title: "",
    
    setPageId: function(pageId) {
        this.pageId = pageId;
    },
    getPageId: function() {
        return this.pageId;
    },
    setParentPageId: function(parentPageId) {
        this.parentPageId = parentPageId;
    },
    getParentPageId: function() {
        return this.parentPageId;
    },
    setTitle: function(title) { 
        this.title = title; 
    },
    getTitle: function() { 
        return this.title; 
    },
    
    // default constructor
    constructor: function(pageId, parentPageId, title) {
        this.pageId = pageId;
        this.parentPageId = parentPageId;
        this.title = title;
    }
};

var dataSource = [
     [1, 0, 'Home'],
     [2, 0, 'Products'],
     [3, 0, 'Contact Us'],
     [4, 0, 'About'],
     [5, 2, 'TradeDesk'],
     [6, 2, 'MT4 - (MetaTrader)'],
     [7, 6, 'Download']
];

var pages = {
    pagesList: [],
    getByPageId: function(pageId) {
        for(var i = 0; i < this.pagesList.length; i++) {
            if(this.pagesList[i].getPageId() == pageId) 
                return this.pagesList[i];
        }
    }
};

var breadCrumbs = new function() {
    
    // fill data of the page object
    for(var i = 0; i < dataSource.length; i++) {
        
        // create new page and set properties
        var p = new page();
            p.setPageId(dataSource[i][0]);
            p.setParentPageId(dataSource[i][1]);
            p.setTitle(dataSource[i][2]);
        
        pages.pagesList[i] = p;
    }
    
    // get specific page by pageId
    var p = pages.getByPageId(7);
    
    // check if page have a parentPageId
    if(p.getParentPageId() != 0) {
        
        // fill breadCrumbs array using - recursive method
        var breadCrumbs = [];
        var pageToCheck = p;
        var maxCheck = 6;
        var checkCounter = 0;
        
        
        while(pageToCheck != null && checkCounter < maxCheck) {
            breadCrumbs.push(pageToCheck);
            pageToCheck = 
                pages.getByPageId(pageToCheck.getParentPageId());
        }
        pageToCheck = null;
        
        // reverse array
        breadCrumbs.reverse();
        
        for(var i = 0; i < breadCrumbs.length; i++) {
            // print breadCrumbs array - 
            // output will be Products - > MT4 -> Overview
            alert(breadCrumbs[i].getTitle());
        }
        
    }
    
};

Enjoy...