4elements, web design and consultancy

  1. How to Set Up Downloadable Products in OpenCart

    As with most other e-commerce frameworks, OpenCart also provides built-in support for digital products, allowing you set up and sell downloadable products out of the box. Also, it’s considered an important feature of e-commerce frameworks nowadays, as the trend of selling virtual products is being adopted progressively.The usual workflow of selling virtual or downloadable products is…

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    1. Bridging React With Other Popular Web Languages

      React is a view library written in JavaScript, and so it is agnostic of any stack configuration and can make an appearance in practically any web application that is using HTML and JavaScript for its presentation layer.As React works as the ‘V’ in ‘MVC’, we can create our own application stack from our preferences. So far in this guide we have seen React working with Express, a…

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    1. New Coffee Break Course: Understanding OAuth

      Typical internet users connect to lots of different services and web applications. As we come to use more and more of these services, we expect them to integrate with each other for convenience and ease of use. Much of this integration is made possible through OAuth, a standard for authorizing integrations between applications securely and reliably.In our new Coffee Break Course, 

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    1. Adding Custom Hooks in WordPress: Custom Filters

      In this two-part series, we're taking a look at the WordPress hook system. Specifically, we're taking a close look at both actions and filters and the role they play in WordPress development.Though they are both defined as hooks, each plays a specific role in WordPress development. And if you're looking to become a more accomplished WordPress developer, it's important not only to…

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    1. Building a CMS: phpPress

      In the past tutorials, I have shown you how to create a flat file system content management system (CMS) using Go, Node.js, and Ruby. In this tutorial, I am going to take the same design model and build a server using PHP. Since PHP isn’t a server by itself, but is usually paired with the Apache web server, I will show you how to set up the Apache web server inside a Vagrant virtual…

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    1. What’s New in WordPress 4.6?

      On 16 August 2016, WordPress 4.6 (codenamed "Pepper") was released to the public. As with every release of the CMS, there's a lot to review when it comes to what has been updated or introduced.Some of the changes are under the hood or related to the performance of the application. Others are purely focused on the developer or the designer. And then there are updates that apply to…

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    1. Create a Custom Caching Adapter in OpenCart

      No matter the web framework you’re working with, caching is an important tool to have in the kitty to improve the overall performance of your website. You have different caching mechanisms to choose from, like file, APC, Memcached and more. You can decide based on your requirements, and sometimes it takes a combination of more than one adapter to justify the desired outcome.OpenCart…

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    1. Editing Images in CSS: Combining Techniques

      In last two tutorials of this series, we have discussed how filters and blend modes can completely change the appearance of images. In this tutorial, I will cover the basics of editing images by using both these properties together. The BasicsAny non-primitive image editing usually requires more than just a single element. This can be accomplished with pseudo elements. Unfortunately,…

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