what_is_function_execution_context_.md

What is function execution context?

What is function execution context?

A function execution context is created when a function is invoked. It contains:

1. this Binding:

   • Depends on how the function is called.

2. Scope Chain:

   • Includes variables from the function's scope and its outer lexical environments.

3. Variable Environment:

   • Stores function variables and parameters.

Example:

function example() {
  var a = 10; // Stored in variable environment
  console.log(this); // Depends on invocation
}
example();

Tags: intermediate, JavaScript, Execution Context