Fundamental JavaScript

• Is JavaScript Compiled or Interpreted?
• Is JavaScript Synchronous or Asynchronous in Nature?
• What makes JavaScript Asynchronous in Nature? (Hint: Event Loop, Web APIs)
• JavaScript Runtime and JavaScript Engine. (web browser and v8 or chakra etc)
• Under the hood of JavaScript Engine (memory heap and stack in v8)
• Garbage Collector in JavaScript
• Memory Leaks in JavaScript (event listeners, setInterval and global variables etc)