Understanding how JavaScript works behind the scenes, inside the JS Engine will make you a better developer. This video covers details about Execution Context Creation and its 2 phases: Memory Allocation Phase and the Code Execution phase. This video also answers questions about- Is Javascript Single-threaded or multi-threaded? Is JS Synchronous or asynchronous? Many JavaScript developers are confused about these small concepts. They mess up their heads reading a lot of JS blogs and articles here and there. To help everyone, here's a JS video tutorial with all the info here at once. Topics Covered: 00:00 - Introduction to how JS works behind the scenes 00:15 - Execution Context in JS 00:42 - Variable Environment of Execution Context 01:35 - Thread of Execution in JavaScript 02:11 - Is JavaScript synchronous or asynchronous? 02:32 - Is JavaScript a single-threaded language or multi-threaded? 03:19 - Recap of Execution Context Components 04:00 - Teaser of the next video - How code is executed in JS?