No one likes static web pages with zero dynamic elements. Responsiveness along with smooth and flawless performance are characteristics that distinguish a quality web product.
This scripting language has several useful features, including the ability to:
- facilitate client–server interactions. You can send requests from the client (a web browser) to the target server and validate user input before sending data to the server.
Key TypeScript features include:
- type checking. TypeScript allows for static type checking during compilation, so locating code errors becomes much easier.
Let’s compare these two languages based on the following set of parameters:
A dynamically typed high-level interpreted programming language
A statically typed object-oriented compiled programming language
Source file extensions
No annotations needed
Constant code annotations required
Client-side or server-side
Can be employed on both client and server sides
Employed on the client side
No interface for connecting with other applications
Connects with other applications via a special interface
No support for static typing
Supports static typing, allowing you to check type correctness at compile time
Allows for fast coding
Takes extra time for code compilation
Best suited for
Small, relatively simple projects
Complex projects with large amounts of code
- Type definition
Let’s start with exploring how the presence or absence of type definition affects the quality of code.
The myFunc function is supposed to pass the name of a user to the console, and we expect to receive the object with the FirstName property as a parameter.
Now, let’s see what will happen if we implement the same example in TypeScript:
As you can see, we receive an error at the compilation stage. This happens because in TypeScript, we can only pass the type of a parameter that a particular function expects to receive. As a result, we can detect and fix code errors during compilation, thus spending less time fixing bugs in the future.
In this example, we directly closed access to the _age variable and, using the GetAge function, made it read only.
Now, let’s look at the same example in TypeScript:
As you can see, when trying to compile this code in TypeScript, we get an error because we’re trying to call an unavailable property.
Writing all this code took a lot of effort, and the whole process turned out to be quite complex. But the biggest concern here is that the more code we need to write, the higher the chance of introducing new bugs.
Now, let’s see how the same example would look when implemented in TypeScript:
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