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Articles tagged with #programming-blogs
What is a Map? 👉 A Map is a collection of key-value pairs Just like objects, but more powerful Example const user = new Map() user.set("name", "Rohan") user.set("age", 22) console.log(user.get("na
What Does the new Keyword Do? 👉 The new keyword is used to create a new object from a constructor function It automates several steps behind the scenes. Constructor Functions 👉 A constructor functi
What is Destructuring? 👉 Destructuring is a way to extract values from arrays or objects and store them into variables Instead of writing repetitive code, you can do it in one line ❌ Without Destruc
What is the Spread Operator? 👉 The spread operator (...) is used to expand elements It takes a collection (array/object) and spreads it into individual values. ✅ Example (Array) const arr = [1, 2, 3
What Are String Methods? 👉 String methods are built-in functions in JavaScript used to manipulate text. Common examples: .toUpperCase() .toLowerCase() .slice() .includes() .trim() Example con
What Are Errors in JavaScript? 👉 Errors are unexpected problems that occur while your code is running. They stop your program and can break your app if not handled properly. Example: Runtime Error co
