Machine Language: 00101001

Assembly Language: ldrx0 add x1 (file.asm)

C++: std::string name (cpp or c++ , file.s )

Javascript: const text = "hello"; ( file.js )

In assembly Language we use an assembler to convert our code into zeros and ones.

In C++ lang we used g plus plus g++ which is a compiler that converts our C++ code into machine code.

In javascript we use a javascript engine(spidermonkey) to do that.

Now a javascript engine that we are going to talk about and nodejs and google chrome are using it is and it's also the fastest javascript engine out there is V8

V8 was introduced by google in 2008 and Ryan dial creator of nodejs used that v8 engine to create node.js