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JavaScript vs TypeScript

Review the differences between JavaScript and TypeScript in a structured comparison table, then continue with related interview questions, quizzes, and similar topic comparisons.

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JavaScript vs TypeScript - A key comparison and difference of the topics or subjects that will help you understand which is best for your use case. Check out to compare TypeScript and JavaScript as very common job interview questions.

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Difference between JavaScript and TypeScript

JavaScript vs TypeScript - A key comparison and difference of the topics or subjects that will help you understand which is best for your use case. Check out to compare TypeScript and JavaScript as very common job interview questions.

JavaScript Topic one in this side-by-side comparison.

10 comparison rows currently available on this page.

TypeScript Topic two in this side-by-side comparison.

JavaScript Interview Online Test	TypeScript Interview
It was developed by Netscape in 1995.	It was developed by Anders Hejlsberg in 2012.
JavaScript source file is in ".js" extension.	TypeScript source file is in ".ts" extension.
JavaScript doesn't support ES6.	TypeScript supports ES6.
It doesn't support strongly typed or static typing.	It supports strongly typed or static typing feature.
It is just a scripting language.	It supports object-oriented programming concept like classes, interfaces, inheritance, generics, etc.
JavaScript has no optional parameter feature.	TypeScript has optional parameter feature.
It is interpreted language that's why it highlighted the errors at runtime.	It compiles the code and highlighted errors during the development time.
JavaScript doesn't support modules.	TypeScript gives support for modules.
In this, number, string are the objects.	In this, number, string are the interface.
JavaScript doesn't support generics.	TypeScript supports generics.

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