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Difference between JavaScript and TypeScript
JavaScript
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TypeScript
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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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