What is Coercion? How it works internally.

dsdsd 🧠 What is Coercion in JavaScript? In JavaScript, coercion (type coercion) is: The automatic or explicit conversion of a value from one type to another 🎯 Types of Coercion Implicit Coercion (Automatic) Done by the engine behind the scene " 5 " + 2 // "52" Explicit Coercion (Manual) Number ( " 5 " ) // 5 String ( 10 ) // "10" ⚙️ Why Coercion Exists JavaScript is dynamically typed, so the engine must decide: "How do I perform an operation when types differ?" 🔬 Internal Mechanism (Core Concept) Behind the scenes, JavaScript follows ECMAScript abstract operations, mainly: Key Internal Algorithms: ToPrimitive ToNumber ToString ToBoolean These are not actual JS functions—they are engine-level conversion rules. 🧩 1. ToPrimitive (Most Important) Before any operation, JS tries to convert values into a primitive type. Example : [] + {} Step - by - step : [] → ToPrimitive → "" {} → ToPrimitive → " [object Object] " 👉 Final: "" + " [object Object] " → " [object Object] " ⚙️ How ToPrimitive Wo