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JADE PUG - Its roles and uses in NodeJS application development?

Pug, a very sweet and cute name to a technology that helps in producing the HTML pages. Basically, PUG is a very high-performance server-side template engine for NodeJS applications. It works as a middleman between what has been inputted and what is needed to be produced (mostly the HTML pages).

In this blog I am going to take you through the world of PUG and how it helps in making NodeJS applications render pages without any front-end framework.

Important role of Pug in NodeJS:

As NodeJS is an awesome server-side platform, pug simply helps it add more functionalities to it alongside the usage of Express.js. HTML pages can be easily rendered from the backend only without using any front-end framework. This makes the NodeJS an extra fabulous technology to handle all the logic of any project.

Now before going any further, you must answer me a very relevant question at this point –

What is a template engine?

If you found it a little difficult to answer, then don’t worry, I am going to let you know what it is? A template engine is nothing but a medium which allows to add the data to a view and generate the HTML dynamically. In simple words, if I say, then, at runtime a template engine replaces the variables in the file with the actual values and then send the resultant HTML to the client i.e., to the browser.

what-is-template-engine

This must have cleared your view about the template engine. Right? Interestingly the template engine PUG is very cool to learn and let me tell you here that PUG was always not known by the same name, it was initially known by the name of JADE.

Pug is Renamed from JADE:

The PUG project was formerly known by the name of JADE. But, then why it had to change the name to PUG? Well, that is also very interesting. According to the npm page of PUG, the team at the JADE project realized that JADE is already a registered trademark so they decided to rename it. This resulted in a new name known as PUG.

Pug renamed from JADE

NOTE: For future projects use Pug and avoid using Jade as it is already deprecated.

Now, I must tell you how Pug is installed and included inside any project and how it looks like.

Installing Pug in a node application:

This template engine can be easily installed by running the following command in the terminal:

This command will install the Pug template engine. Now, after installing the Pug, it is necessary to include it in the project that you are using.

How to use Pug?

This can be achieved by including the following line of codes into the main file of the NodeJS server (let’s say server.js)

The above code tells that a module path is included inside the project which will help in getting the right path for the pug file. Similarly, Express is also included and an object of it is assigned to the app.

This line tells that view engine that is included in the project is pug (there are many others such as EJS ). The next line also has some great meaning –

__dirname is always the directory in which the currently executing script resides. The whole line specifies that views will be available inside the views folder.

Now, there is a requirement to create a template, let’s say with the name of ‘firstTemplate’ inside the views folder. i.e., views/firstTemplate.pug
The template will contain the following code

Now to render the same template, the following code will be required inside the server.js file that was mentioned earlier:

This tells the server to render the firstTemplate pug file and to display its content on the browser.

The result in the browser will show the content which was written inside the firstTemplate.pug file. The browser screen looks like the image below:

hello world demo template

For learning more basics of Pug and its syntaxes, you can consider going through their official website.

To learn more about some tremendous features of NodeJS, you may consider reading:

Why Most Of The Companies Use Node.Js? Facts And Reasons!

Now, it becomes necessary to know some of the main advantages of Pug in NodeJS application development.

Awesome advantages of Pug:

advantages-of-Pug-template-engine

There are some fantastic technical advantages of Pug which are listed below.
1. Most of the times it uses less number of lines as compared to any other template engines.
2. Pug helps in improving code readability as it is written in the form of a paragraph. Here you can see the main difference between HTML and PUG style of writing.

HTML

PUG

Note: The number of lines in got lesser in Pug as already mentioned in the first point.

3. Pug has a cleaner and more readable syntax which comes along with the filters and the helpers.
4. There are no closing tags when working with the pug. It has a mechanism to use the indentation pattern to determine the nesting of the tags.
5. Inside the pug, you can directly write the JavaScript which is not exactly the same in syntactical way but almost everything looks like the actual JavaScript.
6. There are shorthand writing styles available in Pug for classes (.) and IDs (#).

Although these advantages make Pug a very feature rich template engine, there are some limitations or disadvantages of Pug which you can see below.

Limitations of Pug:

Some of the major limitations of the Pug template engine are as follows:

It is unforgiving in case of indentation errors:

The entire structure of the Pug is determined by the proper indentations. This creates a space for big errors as any small indentation error will devastate your end results. These mistakes are very common that the developers always commit. So, while writing the structure of the Pug file a developer needs the extra potential to maintain the proper indentation.

Cannot copy/paste HTML from the web sources or internet:

Using Pug, you cannot copy the HTML from anywhere and paste it because Pug has a different syntax and you need to convert the code to Pug syntax before proceeding further. That makes the task of a developer very hefty.

You can consider converting your HTML code to Pug from here.

Bottom Line:

There is huge change observed in the technology stack in the recent past and template engines are amongst that only. Pug is a good template engine that is used with NodeJS to build the highly customizable and flexible applications.

Habilelabs is a premier software development company that provides professional NodeJS application development services along with template engines such as Pug/Jade or EJS. It is rich with the resources to develop the feature-rich applications. Give us a call to find out more about our awesome services!

I hope this blog has covered all that was needed for Pug and its importance in the NodeJS application development. Comment your thoughts and queries related to the blog in the comments section.

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https://www.siquo.com/

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http://tableluv.gr/

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"Habilelabs is a fabulous company. Excellent in quality and always available for communication. We hired Habilelabs team for doing the frontend of my application and they gave me some good tips about backend APIs as well, which tells a lot about their overall expertise. Really appreciate their sincerity, timely delivery and professionalism. Will definitely hire them again in future."

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"iSEEit has been closely working with Habilelabs team ever since our company needed to step up development efforts. Being a rapidly evolving software company, we have come across a multitude of challenges over time but Habilelabs has proactively solved issues impacting the business and handled the continuous releases of the applications without downtime. We are very satisfied and happy to have found Habilelabs as our offshore development partner as they have developed a good understanding of our own vision and work flows."

iSEEit

Rizan Flenner

"Amazing and skilled team we been learning from each other for quite some time, and still working together.
Always available and ready to make great results, or to improve unexpected problems."

Siquo

Daniel White

https://www.siquo.com/

"I am very pleased with the work Habilelabs provides. Every time we have worked, projects were delivered on time. They provide great support and I would totally recommend Habilelabs to anyone that wants to get a project done on time and professionally."

Tableluv

Xenophon Kanarios

http://tableluv.gr/

"Habilelabs is an excellent and affordable programming team that delivers fast results."

Paiusa

Stephen Blaney

http://www.paiusa.com/

"Good mindset, good technical competence and skills, always fix problems when needed."

Denthub

Arash Fard-Rahmani

"We have been extremely satisfied with the project that has been delivered by Habilelabs. They are very professional with great commitments. Quality of communication and problem solving skills were perfect."

Safak Korkut

"Very much satisfied the work. Team quickly understood the requirements and completed work on time. Would definitely recommend him. We will like to hire them again"

Stanislav M.

"Habilelabs is the definition of professional and friendly. They knew exactly what they are doing and never shy to share their knowledge. We will definitely consider hiring them for future projects! Great Work!"

Eben B.

"Great work, will hire team Habilelabs again. I appreciate the extra effort. Excellent work as always."

Saasmath

"Very fast and professional Team. They knows exactly what needs to be developed to achieve the project goal. We will hire them again"

Mediaroot

"Very good work, Little expencive for us but prefere to work with them because I'm sure the work will be done 100%"

ProwebMedia

"Team habilelabs is a pleasure to work with and we will work with them again. They are professional, easy to communicate with, and completes tasks on time and on budget."

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"Really impressed with the high quality work and professionalism!"

Vaibhav Samadhiya

"We worked Habilelabs team and they are very professional, motivated and experienced developer. I would love to work with them in the future again!"

Mahdishahadat

"We had a great collaboration with Habilelabs. They are very communicative, extremely competent and responsive. We are looking forward to continuing our collaboration with Habilelabs. I recommend them with full confidence."

Safkutkorfak

"I'm very impressed with work quality. Habilelabs shows outstanding performance and knowledge in area needed for our project. I'm fully satisfied with Habilelabs's service. Will look for more opportunities to work with them"

AdramMedia

"Team habilelabs are truly great developers to work with, and ensure that the work is completed to the highest of standards. Real pleasure to work with would highly recommend for Node.js / React.js work."

Liamsm

"Habilelabs is a fabulous company. Excellent in quality and always available for communication. We hired Habilelabs team for doing the frontend of my application and they gave me some good tips about backend APIs as well, which tells a lot about their overall expertise. Really appreciate their sincerity, timely delivery and professionalism. Will definitely hire them again in future."

Atul Shrivastava

"very good very profasional, They did good job on time +++"

Moshe Levy

"Love the Company Habilelabs . Knew thier stuff and really came through for me."

Zehash

"5 stars work, very good communication, timely delivery."

Anthony Hu