Question

How is TypeScript different from JavaScript?

Answer 1

TypeScript is different from JavaScript in the following manner:

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

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