const user = name: "Happy Rawat" ; function greet(greeting, punctuation) console.log(`$greeting, $this.name$punctuation`); greet.call(user, "Hello", "!"); // Hello, Happy Rawat! greet.apply(user, ["Welcome", "."]); // Welcome, Happy Rawat. const boundGreet = greet.bind(user, "Hi"); boundGreet("!!"); // Hi, Happy Rawat!! Use code with caution. 6. What is Function Currying?
: Block-scoped. It cannot be redeclared in the same scope but can be reassigned. It is hoisted but enters a Temporal Dead Zone (TDZ).
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Continuously checks if the Call Stack is empty. If it is, it processes all tasks in the Micro-task Queue first, then moves one task from the Macro-task Queue into the Call Stack. Coding and Problem-Solving Challenges Problem 1: Implement a Custom Array.prototype.map
Debouncing limits the rate at which a function fires. It is crucial for optimizing performance on scroll events, window resizing, or search inputs. javascript
Copies all levels of an object, creating completely independent data structural duplicates. javascript const user = name: "Happy Rawat" ; function
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The ultimate authority on JavaScript. Whenever you find a concept in a PDF that you don't fully understand, verify it using MDN. Action Plan: How to Crack Your Interview Use code with caution
Practical implementation questions such as reversing strings or handling async operations. 🚀 How to Get the Resources (PDFs & More)
Methods to handle asynchronous code, solving "callback hell" by managing pending, fulfilled, or rejected states. 3. DOM & Modern JavaScript (ES6+) in an arrow function? from the enclosing lexical scope, unlike regular functions. What are Promises?
Every JavaScript object has a private property pointing to another object called its . When you attempt to access a property or method on an object, JavaScript first looks at the object itself. If it cannot find it, it searches the prototype chain upward until it finds the property or reaches null . 9. What are call , apply , and bind ?