JavaScript is a prototype-based scripting language with dynamic typing and first-class functions. This mix of features makes it a multi-paradigm language, supporting object-oriented, imperative, and functional programming styles.

JavaScript is also used in environments that aren’t web-based, such as PDF documents, site-specific browsers, and desktop widgets. Newer and faster JavaScript virtual machines (VMs) and platforms built upon them have also increased the popularity of JavaScript for server-side web applications. On the client side, JavaScript has been traditionally implemented as an interpreted language, but more recent browsers perform just-in-time compilation.

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var http = require('http');
http.createServer(function (req, res) {
    res.writeHead(200, {'Content-Type': 'text/plain'});
    res.end('Hello Worldn');
}).listen(1337, '127.0.0.1');
console.log('Server running at http://127.0.0.1:1337/');

This is in contrast to today’s more common concurrency model where OS threads are employed. Thread-based networking is relatively inefficient and very difficult to use. Furthermore, users of Node are free from worries of dead-locking the process—there are no locks. Almost no function in Node directly performs I/O, so the process never blocks. Because nothing blocks, less-than-expert programmers are able to develop scalable systems.

Just because Node is designed without threads, doesn’t mean you cannot take advantage of multiple cores in your environment. You can spawn child processes that are easy to communicate with by using our child_process.fork() API. Built upon that same interface is the cluster module, which allows you to share sockets between processes to enable load balancing over your cores.

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Step One: Install Nginx

We can install Nginx easily because the Ubuntu team provides an Nginx package in its default repositories. Since this is our first interaction with the apt packaging system in this session, we should update our local package index before we begin so that we are using the most up-to-date information. Afterwards, we will install nginx:

sudo apt-get update
sudo apt-get install nginx

You will probably be prompted for your user’s password. Enter it to confirm that you wish to complete the installation. The appropriate software will be downloaded to your server and then automatically installed.

Step Two: Check your Web Server

You can access the default Nginx landing page to confirm that the software is running properly by visiting your server’s domain name or public IP address in your web browser.

If you do not have a spare domain name, or have no need for one, you can use your server’s public IP address. If you do not know your server’s IP address, you can get it a few different ways from the command line.

Continue reading this guide at Digital Ocean. This article has been used as an example of an Ecko WordPress theme. This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

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Progress Bar

The Progress Bar block is provided by the ‘Ecko Blocks’ plugin. It can be used to show the current status of a task. Below is an example this block in use with various different configurations.

This block includes a number of customization options to adjust its appearance, content and current state. Any number of Progress Bar blocks can be added in series or as a single block.

Accordion

The Accordion block is provided by the ‘Ecko Blocks’ plugin. It can be used to show or hide content sections via user click or mobile tap. Below is an example of this block in use.

This block includes customization options for the title and its default state – open or closed. Any number of Accordions blocks can be added in series or as a single block.

Status Message

The Status Message block is provided by the ‘Ecko Blocks’ plugin. It can be used to display notifications or emphasise important content. Below is an example this block in use.

This block includes a number of customization options to adjust its appearance and content. Any number of Status Message blocks can be added in series or as a single block.

Tabs

The Tabs block is provided by the ‘Ecko Blocks’ plugin. It can be used to organize content sections into named tabbed containers. Below is an example this block in use.

This block includes customization options for the tab title and contents. Any number of Status Message blocks can be added in series or as a single block – multiple containers can also be used throughout the post or page.

Caption

A number of core Gutenberg block include the option for a caption to be added, which can be used to add textual context to the content. Below is an example of a caption added to an Image block.

Captions can include formatted text such as bold style and links. The number of captions that can be added is dependant on the block used, for example an Image block can have a single caption, where a Gallery block may have one caption per image added.

Block & Pull Quote

The Quote block is a core Gutenberg block. It can be used to highlight a quote, and can also include a citation. Below is an example of how these quotes are styled within posts and pages.

I don’t believe you have to be better than everybody else. I believe you have to be better than you ever thought you could be.

Ken Venturi

The following text is filler text for example purposes. Suspendisse euismod diam sit amet nisi faucibus fringilla. Integer fermentum arcu nec mi venenatis volutpat. Donec nec tristique justo. Phasellus iaculis eu metus at bibendum. Aliquam nec ipsum viverra, laoreet augue id, vehicula ipsum. Praesent iaculis pellentesque accumsan. Cras ac turpis accumsan, cursus velit et, eleifend erat. Phasellus mollis, risus non bibendum consequat, ante quam tincidunt magna, a scelerisque lacus tellus quis lorem.

Suspendisse euismod diam sit amet nisi faucibus fringilla. Integer fermentum arcu nec mi venenatis volutpat. Donec nec tristique justo. Phasellus iaculis eu metus at bibendum. Aliquam nec ipsum viverra, laoreet augue id, vehicula ipsum. Praesent iaculis pellentesque accumsan. Cras ac turpis accumsan, cursus velit et, eleifend erat. Phasellus mollis, risus non bibendum consequat, ante quam tincidunt magna, a scelerisque lacus.

Alignment

Gutenberg adds two additional alignment options, Wide and Full, for supported blocks. Below is an example Image block without any specified alignment, it will be limited in width the same as the post container, and therefore be inline with the paragraph text.

Below is an example of the Wide & Full alignment. When either alignment is used the active block will extend to fill the main outer container, or if no outer container is present then entire width of the browser window will be used.

Content Embeds

In addition to the included blocks, Onyx fully supports the WordPress third-party embeds blocks, such as Twitter, Youtube, Vimeo, Facebook etc. More information on these embed blocks and their usage can be found within the WordPress Gutenberg documentation.

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