Episode 1 : Execution Context

  • 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. Execution Context

  • 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:- In a specific synchronous order.
    • Single-threaded:- One command at a time.

Watch Live On Youtube below:

Execution Context Youtube Link