Javascript: Javascript Features

Eishta Mittal

·

Follow

2 min read

·

Mar 26, 2022

--

Share

Features

1. High-level
2. Garbage-collected
3. Interpreted and Just-in-time compilation
4. Multi-paradigm
5. Prototype based object oriented
6. First class functions
7. Dynamic
8. Single-threaded

HIGH-LEVEL

• Languages that need not worry about the resources management such as memory.
• They allow the programmer to focus on what needs to be done, rather than on how the computer actually works.
• Low-level language — example- C-> where memory is to be handled manually.

Garbage-collected

• JavaScript utilises a form of automatic memory management known as garbage collection (GC).
• V8 Engine internally uses Mark and Sweep Algorithm to free up space from the memory heap.
• The garbage collector attempts to reclaim memory which was allocated by the program, but is no longer referenced — also called garbage.
• JS Engine automatically removes the unused variables and things

Interpreted and Just-in-time compilation