foreach.js

posts.forEach(function(post) {
   console.log(post['title']);
});

main-page.css

.post-title {
    padding: 10;
    color: #213778;
}

pagebinding.js

var postTitles = new ObservableArray([].map(function(postTitle) {
    return new Observable({
        postName: postTitle
    });
}));
page = args.object;
page.bindingContext = {
    postList: postTitles
};

requires.js

var ObservableArray = require("data/observable-array").ObservableArray;
var Observable = require("data/observable").Observable;