TypeScript and JavaScript are two of the most popular scripting languages in project development these days, but JavaScript can’t easily create large, complex Web applications

So we chose another solution — TypeScript

TypeScript has grown in popularity and usage over the past few years. One of the largest front-end frameworks available today, Angular, uses TypeScript. After 2020, React and Vue3.0 will gradually resemble TypeScript. According to the data, about 60% of front-end programmers are using or have used TypeScript, and about 22% want to and intend to learn TypeScript

What is TypeScript?

TypeScript, short for TS, is a superset of JavaScript. TypeScript encapsulates the features of TS and can be compiled into JavaScript

TS was originally designed to allow back-end programmers who were used to writing strongly typed languages to write Web applications quickly. Since JavaScript doesn’t have strong data typing, TypeScript provides static data typing, which is at the heart of TypeScript

As the project grows, more and more people realize the importance of static data types. As TypeScript has become more sophisticated, it has grown in popularity and demand. Finally, one of the three front-end frameworks, angular2.x, leads the way.

What are the advantages of TypeScript?

The static type

Static typing is a feature that detects errors while a developer is writing a script, allowing developers to write more robust code and maintain it for better, cleaner code.

Here’s the code:

Num is of type number. If we give num a value of another type, we will report an error.

Expression in a function:

The function fun accepts two types of number as arguments, and an error is reported if it passes a non-number argument.

In addition, TypeScript has a variety of data types, which you can see in the TypeScript documentation

Advantages of large projects

With the development of large projects, sometimes small changes are made to the code to optimize and improve the project. These small changes can have serious, unintended consequences, so it is necessary to undo them. Refactoring with TypeScript tools is easier and faster.

Better collaboration

For the development of large projects, there will be a lot of developers working together, and the number of garbled code and error machines will increase. Type safety is a capability to detect errors during coding, rather than when compiling the project. This creates a more efficient coding and debugging process for the development team.

How does TypeScript differ from JavaScript?

  • TypeScript uses all the code and coding concepts found in JavaScript
  • TypeScript extends the JavaScript object model in terms of both the core language and the moulding of class concepts
  • JavaScript code can work with TypeScript without any modifications, and a compiler can be used to convert TypeScript code to JavaScript
  • TypeScript provides static type checking at compile time through type annotations
  • Data in TypeScript requires explicit typing; JavaScript does not
  • TypeScript provides default parameter values for functions
  • TypeScript introduces the concept of “classes” that JavaScript does not
  • TypeScript introduces the concept of modules, which encapsulate declarations, data, functions, and classes

In terms of what to use with TS or JS, I think TS is the first choice when building large, complex Web applications, and when the project is not complex it is enough to use JS flexibly.

The first time to write code words, some sentences are not smooth, please bear a lot of, if there is a mistake, please point out in time, thank you

We will discuss the differences between TS and JS usage in the next document…