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The following story shows the importance of smoke tests when writing an app using the Ember+Rails stack. It covers the most basic example, and even then things go awry. In addition, it shows an example of an end-to-end test and some of the difficulty in setting up an environment for smoke tests. Finally, it mentions exhaust, a library that can ...

The Current State of the Mobile Landscape If someone stepped forward a decade or two ago and claimed that, in the near future, we would all have pocket-sized touchscreen devices that acted as gateways to multiple technological feats such as browsing the internet at high speeds, playing graphics intensive games, hailing cabs, booking flights, scheduling restaurant reservations, and purchasing products, ...

This time we’re going to explain how to close a window, regardless of whether it has been opened by a script or not. Take a look!                     Closing the script-open window To close windows we have opened by a script we use the built-in Javascript method window.close(), which is also it’s ...

We released the latest development version of MongoDB the other week. The official announcement focuses on bug fixes, but I’m much more excited about a new feature: the mongo shell includes the new CRUD API! In addition to the old insert, update, and remove, the shell now supports insertMany, replaceOne, and a variety of other new methods. Why do I ...

The aim of this example is to give you a full understanding of AJAX, which stands for Asynchronous Javascript and XML. Ajax is not a programming language or a tool, but a concept. Ajax is a client-side script that communicates to and from a server/database without the need for a postback or a complete page refresh. The best definition for ...

You’re always striving to give your users a better experience when they use your website or application. One of the most important ways to achieve this is by giving them quick server response times. In this article, we’ll explore how to use Rails Active Job to enable us to do this through the use of a queuing system. You can ...

Let’s suppose you receive from the user of your site some data, in string form, which should be converted to integer before you use them again. For that, you can use the parseInt() function. But how can you do that exactly, and also reverse this action? Let’s see below.                 Syntax The parseInt() ...

I have been programming for 9 years now, mostly focused on Java EE development. One area that I’m always interested in exploring is front-end web development and web apps. One thing that interests me a lot on the front-end side of development are frameworks. A framework can give you everything you need to get up and running and prototyping. In this ...

The aim of this example is to give you the right knowledge about how you can achieve file upload with jQuery. Notice that this is not an easy task, and plugins are recommended to have non-surprising results. In particular, there is one famous and very used jQuery Plugin for file upload made public to GitHub by blueimp. They created a ...