What Is Express JS?

Jun 29, 20221 like2,004 views

This Express Js tutorial will walk you through what express js is, what we can do with it, features of express js and companies that are hiring express js developers. Express Js is a Node Js framework which helps to write the API’s very efficiently. It’s a awesome framework of node js which is helping Backend development so much and it provides wide set of features to develop both web and mobile applications it is used to build single page, multipage and hybrid web applications.

• Introduction
• What is Express JS ?
• The need for Express JS
• Features of Express JS
• Advantages of Express JS
• Disadvantages of Express JS
• Companies using Express JS
What’s in It For You?

Introduction to Express JS
Node.js is a JavaScript run-time environment that is
fast, but it does not support request handling, HTTP
methods or serving files, so this is where Express JS
comes into the picture.

What is Express JS ?
Express is a Node.js framework designed for building APIs, web applications and
cross-platform mobile apps
Express is high performance, fast, unopinionated, and lightweight
It is used as a server-side scripting language

Need of Express JS
Money Efficient
Asynchronous
Time Efficient Fast
Easy to Learn

Features of Express JS
Fast Server-Side
Development:
With the help of Node.js
features, express can save
a lot of time
Middleware :
It is a request handler,
which have the access to
the application’s request-
response cycle
Routing :
Refers to how an application’s
endpoints (URIs) respond to
client requests

Features of Express JS
Templating :
Creates a html template
file with less code and
render HTML Pages
Debugging :
Express makes it easier as it
identifies the exact part
where bugs are

Advantages and Disadvantages of Express
JS
 Express is very easy we can customize and
use it as per our needs
 A single language JavaScript is used for
front-end and back-end development
 It is very fast to link with databases like
MySQL, MongoDB etc
 No structural way to organizing things
 There are so many issues in
Callbacks
 The error messages are not very
helpful

Companies using Express JS
As per the Enlyft.com there are 34,372 companies are using Express JS

Key Takeaways
• Express JS is a lightweight framework which gives
functionality and make Node.js easy
• Express JS is trending so, most of the companies are
moving towards it.

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In this video on Kotter's 8-Step Change Model Explained from Simplilearn, we explore Kotter's 8-Step Change Model, a widely-used framework for effective change management created by Dr. John Kotter. This model outlines a step-by-step approach to successfully guide organizations through change, from creating a sense of urgency and forming a powerful coalition to building on short-term wins and anchoring new approaches in the culture. Whether you're a leader, manager, or just interested in understanding how to navigate change, this video provides a clear and concise overview of each step, offering practical insights to ensure successful and lasting transformation. Don't forget to like, subscribe, and share for more videos.

Gen AI Engineer Roadmap For 2025 | How To Become Gen AI Engineer In 2025 | Si...Simplilearn

In this video by Simplilearn, we’ll guide you through the Generative AI Engineer Roadmap for 2025. Generative AI, a technology that creates text, images, music, and more, is transforming industries like healthcare, finance, and entertainment. We’ll cover what Generative AI is, what a Generative AI Engineer does, and the skills you need, including Python programming, machine learning, and advanced topics like Prompt Engineering. Plus, learn about career opportunities, expected salaries, and resources like Simplilearn’s PostGraduate Program in AI and Machine Learning to kickstart your journey. Following are the topics covered in this video.

Top 10 Data Analyst Certification For 2025 | Best Data Analyst Certification ...Simplilearn