title: What is the Javascript environment?
body: <p>I'm new in JavaScript and I'm learning how JS works behind the scenes and lately I'm trying to understand the execution context and I read some articles in google telling that it's a fancy word to describe the environment in which our code is executed.
  so  <strong>from what this environment is constituted?</strong></p>
  
  <p><strong>Does it constituted from functions, the "this" keyword, variables, objects?</strong></p>
  
  <p>Please make it brief I need a simple explanation I'm still a beginner.</p>