What does javascript superset mean?

The superset of javascript is TypeScript; TypeScript is a free and open source programming language developed by Microsoft, supporting the ES6 standard; its design goal is to develop large-scale applications, it can be compiled into pure JavaScript, and the compiled JavaScript can be run on any browser.

The operating environment of this article: windows7 system, javascript version 1.8.5, Dell G3 computer.

What does javascript superset mean?

The superset of javascript is TypeScript. TypeScript is a free and open source programming language developed by Microsoft that supports the ES 6 standard. Its design goal is to develop large-scale applications. It can be compiled into pure JavaScript, and the compiled JavaScript can run on any browser.

Language Features

TypeScript is a language extension that adds features to JavaScript. Added features include:

• Type annotations and compile-time type checking

• Type inference

• Type erasure

• Interface

• Enumeration

• Mixin

• Generic Programming

• Namespace

• Tuple

• Await

The difference between JavaScript and TypeScript:

TypeScript is a superset of JavaScript that extends the syntax of JavaScript, so existing JavaScript code can be used with TypeScript works together without any modification, and TypeScript provides compile-time static type checking through type annotations.

TypeScript can process existing JavaScript code and compile only the TypeScript code within it.

[Recommended learning: javascript basic tutorial]

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