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Why TypeScript is More Preferable For Web Design Than JavaScript?

typescript vs javascript

When we talk about the design language program, it is undoubtedly JavaScript. However, with the introduction of HTML5, there has been a significant need of a standard website platform, which delivers a rich user experience. Over the years, the use of JavaScript has expanded beyond the internet browser with significant introduction of application systems and devices like apps for Windows Store, running on Windows 8 and Node.js for Windows Azure. Gradually, there emerged applications that were developed in unprecedented sizes and which required JavaScript writing on a large scale.

Moreover, the JavaScript program is object oriented and lacks class based features, which are needed for writing and developing many applications. This turns out to be difficult for developers, who are familiar with languages like Java or C#, which were more class based.

When website application comes, client side program language is only required because it is this language, which supports all browsers universally.

This turned out to be hard and thus a more easier language program was thought of, called the TypeScript.

What Is TypeScript?

TypeScript is basically the superset of JavaScript, which combines static analysis, type checking, static interfaces and other best practices to form a single language compiler. This language allows the ‘class-based’ programs, which are object oriented, to align with standard proposals like ES or EcmaScript6.

Why Is TypeScript More Preferable Than JavaScript?

First of all, TypeScript codes are written in JavaScript that strictly follow the rules laid down for JavaScript. Hence, it is almost the same but more clean and modular. Moreover, developers who have a strong background in other strong language types, will find TypeScript more friendlier than JavaScript.

This is an open source project. So you can gain access to other source codes and support packages/plug-ins like:

1. Node.js (an NPM package)

2. Eclipse (a plug-in)

3. WebStorm (support system)

4. Sublime Text (a plug-in)

5. VI (a plug-in)

6. Emacs (a plug-in)

7. Visual Studio 2012 and 2013

One can easily enable a static compilation and identify syntax errors like wrong typos, names and parameters. TypeScript’s static compilation feature, makes pull request integration more easier than before, where you do not have to worry anymore about ensuring a guarantee that a particular code, not produced by you, will not disrupt things. TypeScript language is easier to read and understand. So, you can understand what parameters to pass through to reach a function.

You can also detect presence of bugs within your code and fix it. This is due to the function of the type checker, which detects the mistakes present during compilation. However, that does not mean you do not need to write a unit test. What TypeScript tries to do here, is to reduce the time required to do these unit tests.

TypeScript works well when it comes to modern IDEs or Integrated Development Areas like Eclipse, Sublime Text, etc. With new features such as ‘autocomplete’, the Application Program Interface (API) becomes easily discoverable, which liberates a developer from learning all the APIs by heart. This ultimately leads to a significant boost in productivity.

How To Efficiently Use A TypeScript In Web Design

You need to know the kind of JavaScript code, the TypeScript generates for individual constructs like modules, enums, classes, etc. This makes your work easy, when you try to figure out how to operate with frameworks, namely AngularJS.

Use declaration types and be prepared, when it comes to writing or adapting any type of existing module declarations.

You must remember that JavaScript is still the core of TypeScript. So, there are certain things, you would need to know. They are as follows –

1. The ‘this’ code is bounded lexically in lambda expressions. The ‘this’ can only be determined by the place where the function is defined and not the place, where you are using it. Functions, which are defined using ‘function’ methods and keywords, follow the rules of JavaScript on a TypeScript class.

The manner in which the function gets invoked is what ‘this’ means.

2. Use triple ‘===’ and not double ‘==’ . Beware of any automatic insertion of semicolons.

3. Avoid module pitfalls ,which can be common. When you declare an external module along with a single function or class, then use this – “export = ClassName”. This will avoid any kind of name spacing that appears within the code.

4. In case you use a RequireJS plug-in like the “text!”, then type this code – /// <amd-dependency path= “text!foo.html”/>.

5. Consider to have a single file ( “references.ts”) with internal module references and ambient declarations. Use syntax like “///<reference path=’…’/>” in the beginning of every TypeScript file.

By doing this, writing and reorganizing files within a project becomes easy.

6. Use static checker tools to integrate within your built-up procedure, once you link the codes of both TypeScript and JavaScript.

7. For a proper TypeScript compiler development, follow some guidelines on adopting coding procedures.

Pros & Cons Of Using TypeScript In Web Design


1. Rich Integrated Development Environment with navigation and autocomplete features.

2. Automatic improvement or refactoring of the internal structure of the code, without altering the external behavior upon change of the internal system.

3. Discovering of APIs and code contracts that are self-explanatory.

4. Support of module.

5. Catching of Typos during the time of compilation.

6. Any TypeScript code is a JavaScript code.

7. Ability to compile down to a JavaScript code that is idiomatic.

8. Advantage of trying TypeScript for a relative rate of low risk. You can shift from JavaScript to TypeScript by gradual addition of type annotations and always stop using TypeScript, after compiling it to JavaScript and using it as a code-base.


1. Developers would need to include type annotations, everywhere, within the coding. This might turn out to be regarded as suitable for those, who are more acquainted with a more dynamic background of the language.

2. The point of introducing TypeScript is to impose a strong system that would turn out to be easier to reason, compared to using JavaScript.

3. Some of the fundamental issues of JavaScript code cannot be fixed by TypeScript.

4. You need to develop a compile step that will transform the TypeScript into a JavaScript, in order to run it successfully in the browser.

As you can understand, there would be some pros and some cons of using TypeScript. It is presumed that you already have a little bit of knowledge about JavaScript. Nevertheless, if you don’t and the tips to using TypeScript seem difficult, you can take the help of a web development specialist, who can help you out with your website design development.

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Sudeep Banerjee

Written by

Sudeep Banerjee is the Founder & President of B3NET Inc., the leading Orange County Web Development firm, since 1999 in California. He is a forward thinking leader with expertise in Digital Marketing, Web Design and Mobile Application Development and Amazon Sales Consulting. He is an author, speaker and a consultant with 28 years of experience. He loves to play Basketball and Golf.