-
Everything in JS happens inside the execution context. Imagine a sealed-off container inside which JS runs. It is an abstract concept that hold info about the env. within the current code is being executed.
-
In the container the first component is memory component and the 2nd one is code component
-
Memory component has all the variables and functions in key value pairs. It is also called Variable environment.
-
Code component is the place where code is executed one line at a time. It is also called the Thread of Execution.
-
JS is a synchronous, single-threaded language
- Synchronous:- One command at a time.
- Single-threaded:- In a specific synchronous order.
Watch Live On Youtube below:
