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TypeScript - Interview Questions
What are the Differences between TypeScript and JavaScript?
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.