Published On: July 17th, 20237.4 min read

Everything we see on the website from the buttons to animation, all of them are under front-end development. Front-end is responsible for making websites more interactive, responsive, and user-friendly. Front-end development has remarkably transitioned in recent years evolving from the Era of HTML, CSS, and Vanilla javascript to the rapid adoption of modern web frameworks. It has richly shaped the user experience, the rapid development of a web application, and overall performance. 

Days of Vanilla javascript

Vanilla javascript refers to plain javascript developers use to develop a web application. Back in the days before the arrival of modern technologies developers used to write the HTML codes to define the headings, paragraphs, buttons, and fonts of a website and CSS to make the websites more visually appealing. To make the website interactive, they used to implement vanilla javascript to manipulate the HTML elements dynamically. Javascript interacts with the elements of a web page to update content and perform dynamic actions. For example, you can make a button perform a specific task once it is clicked. However, this development wasn’t productive or efficient. 

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Obstacles in Vanilla javascript

Lack of structure

Vanilla javascript doesn’t offer a predefined structure or architecture for organizing the code base in a clean and mannered way. It creates issues for developers when web applications grow and the complexity increases, it becomes difficult to organize and maintain various components. Vanilla javascript requires organizing the code in meaningful functions and forces the developers to manually handle the codebase while maintaining a consistent architecture which hinders the code readability and team collaboration later.

Performance optimization 

Probably one of the most important factors while building a web application. Optimizing the performance by solely using vanilla javascript was a tough job because it requires certain and very careful coding practices and implementing performance optimization techniques. Let’s say we re-render a large set of data. If we try to perform the actions via vanilla javascript only then given issues might occur.

Cross-Browser Compatibility

Different web browsers such as Chrome, and Mozilla have their interpretation to execute javascript code which leads to inconsistencies in how your web application behaves in different browsers. When developers used to implement raw javascript they had to perform additional checks to handle these differences.     

Inefficient DOM Manipulation

Vanilla javascript by nature act directly by manipulating the DOM to dynamically render or re-render elements. While dealing With a large set of data, it could be resource intensive since it performs the tasks by Involving individual data rather than taking all the data into account at the same time. It hampers the total performance of the application.

Limited Event handling optimization 

In vanilla javascript, it is a tradition to add event listeners individually to numerous elements which can result in slower event processing and cause a reduction in terms of responsiveness. This is mainly because each event listener requires extra memory.

Uprising of Modern Frameworks

Apart from its core features, there are some hindrances that Angular could remove which was difficult with vanilla javascript solely. It was the main reason why frameworks like Angular became so popular.

Faster development time 

Modern frameworks like Angular were able to increase the development time by manyfold. They offer some ready-made and efficient solutions for common tasks like state management, routing and navigation, and writing code from scratch. 

Code reusability and maintainability

Modern frameworks promote modular and reusable codes by utilizing component-based architecture. Developers can use reusable components that can be shared across multiple projects, reducing unnecessary and repetitive efforts. It increases the maintainability of a codebase and results in fewer bugs and easier-to-update codes as it is organized in a mannered way. 

Enhance user experience

This is what matters to users while using an application and developers have to keep it in mind to improve it. Angular allows the update of the necessary parts of the UI without reloading the entire page leading to a smoother transition between views. It also offers real-time updates by reducing the time for manual page refreshes. It increases user engagement and customer satisfaction.

Testing and quality assurance

The journey of web development doesn’t stop after writing code. Testing and quality assurance is the integral part to follow. Modern frameworks like Angular provide advanced testing utilities and support different kinds of testing approaches including unit testing, end-to-end testing, and Integration testing. These features smoothen the development of highly testable code and improve the overall quality and speed of an application. Businesses can reduce costs and increase customer satisfaction and product quality.

Increase Developer’s productivity

Angular JS not only creates stunning SPA but also enhances developers’ productivity by manyfold. It provides a data binding solution that initially reduces the boring and repetitive task of DOM manipulation. It also provides built-in solutions like form validation, Error handling, and Routing. It also has extensive documentation and a vibrant community.

Core features of Angular

Although jQuery was built in 2006, it was not really a framework, it was a library. Things took a new path when GOOGLE introduced Angular JS in 2010. Vanilla javascript was tough luck when there was a job to manage a complex UI and handle state management. It introduced revolutionized concepts like two-way data bindings, enabling the steam of synchronization between model and view. 

Two-way data binding 

As mentioned before Angular introduced the concept of two ways data binding which enables the synchronization between UI and data. When the model changes the view changes or gets updated automatically. It helps to display information to the user end.

MVC architecture

Since AngularJS follows the MVC pattern it provides a clear separation of concern and allows developers to organize and maintain their code into Models(Data), Views(UI), and controllers(Logic). It increases modularity, testability, and scalability. 

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Declarative HTML and directive

Angular uses declarative HTML and custom directives to create components and desired behaviors. Declarative HTML allows developers to explain the structure of the explanation and the latter proffers HTML’s functionality and provides reusable components.  


These frameworks like Angular are also well known for maintaining tight security which is important, especially for Saas businesses. Frameworks offer protection against cross-site scripting attacks and content security policies. By utilizing this it is possible to protect sensitive user information and gain trust among users. 

Performance optimization

This is the place why Angular creates a big difference with vanilla javascript. Angular utilizes a change in detection mechanism that tracks the data model of the application. Angular’s zone-based detection strategy detects and updates the components affected by changes. It uses immutable data patterns which further optimize the change detection by ignoring unnecessary checks. Also Angular supports lazy loading allowing developers to load modules as well as components when needed. By dividing the applications into smaller feature modules and loading them anytime, it is possible to significantly reduce the initial bundle size and improve overall loading performance. 

Why does Vanilla javascript still matter

Despite mentioning all the benefits of the modern framework, it is still very important to have a clear understanding of vanilla javascript as it serves as the base of modern frameworks and libraries. The more they have good command over vanilla javascript, the more it is likely for them to address the unique project requirement that might not support the pre-built functions of frameworks. Customizing many aspects of frameworks requires a solid understanding of javascript.  While frameworks are likely to have some restrictions, vanilla javascript provides freedom and flexibility to the developers. It helps developers to customize the application according to their needs and tailor everything according to the client’s needs. Software companies also need to focus on such candidates who have a skill in vanilla javascript. It is a predictor of a good adaptive programmer who can work at any given project and maintain the client’s expectations regardless of the fact that which framework is being used. 


The industry is evolving at a rapid rate. At current times there are many frameworks and libraries that are constantly shaping front-end development. Each library comes with its own capabilities and limitations. It is more important to stay updated with the current frameworks to ensure the best products or services. Choosing the right framework is important to create stunning products and deliver satisfactory services. While Angular can be capable of doing a certain task, Vue might provide a more efficient environment to ensure the same feature with better efficiency. 

Ready to revolutionize your web application? Partner with Nascenia and unlock the potential of modern frameworks like Angular for stunning, efficient, and customized web applications. We have helped entrepreneurs, businesses, and organizations (156) like Khan Academy, UN, UNDP, Telenor, Robi Axiata, TIB, ITC, and PwC to achieve their software development goals. Have a look at our company profile for more details on us.

Contributor: Joydip Barua

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