Self-taught software engineer and entrepreneur in high school, specializing in full-stack development and UI design. Blogger on software engineering, internships, and high schoolers.
Javascript can be either asynchronous or synchronous. Javascript is most known for being asynchronous because it can be, while other programming languages are multi-threaded at best. It is a huge advantage over other languages because it's so much faster.
From humble beginnings at an MSP, I've adventured through life as a sysadmin, into an engineer, and finally landed as a developer focused on fixing problems with automation.
You're confusing a lot of concepts here. Concurrency (async) has nothing to do with threading vs multiprocessing or whatever model you use. It's about "parallel" execution. JavaScript is synchronous by default. JavaScript is just a language, it is neither fast or slow. That is up to its engines.
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Javascript can be either asynchronous or synchronous. Javascript is most known for being asynchronous because it can be, while other programming languages are multi-threaded at best. It is a huge advantage over other languages because it's so much faster.
You're confusing a lot of concepts here. Concurrency (async) has nothing to do with threading vs multiprocessing or whatever model you use. It's about "parallel" execution. JavaScript is synchronous by default. JavaScript is just a language, it is neither fast or slow. That is up to its engines.