What Actually Happens When You Call a Function? | JavaScript Deep Dive

You've called thousands of functions in JavaScript But have you ever wondered what actually happens when you write: greet(); Adding a pair of parentheses looks simple, but behind the scenes, the JavaScript engine performs several important steps before your code even starts executing. In this video, we dive deep into function invocation and explore what really happens when a function is called. We'll build an intuition for why functions are different from ordinary objects and introduce one of the most important internal concepts in JavaScript: the hidden [[Call]] internal method. Topics Covered What does it mean to "call" a function? Why only functions can be invoked Functions are callable objects The hidden [[Call]] internal method How the JavaScript engine invokes a function Why objects cannot be called like functions A preview of [[Construct]] closure deep dive:    • JavaScript Closures Explained Deeply (Lexi...   #javascript #webdevelopment #frontend #webdev #javascriptdeveloper #programming #coding #ecmascript #functions #softwareengineering