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Delays function execution until a certain amount of time has elapsed since the last call. (e.g., Search auto-complete).

Unlike class-based languages like Java or C++, JavaScript uses . Every JavaScript object has a private property ( [[Prototype]] ) linking to another object called its prototype. This forms a Prototype Chain .

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Happy Rawat’s curriculum typically starts with 11 foundational topics to build a strong interview base. Delays function execution until a certain amount of

JavaScript is a high-level, dynamic, and interpreted programming language that is primarily used for client-side scripting on the web. It is one of the three core technologies of the web, along with HTML and CSS. JavaScript allows developers to create interactive web pages, web applications, and mobile applications. With the rise of Node.js, JavaScript has also become a popular choice for server-side programming.

In machine coding rounds (popularized by companies like Uber, Flipkart, and various fast-growing tech startups), optimization patterns are heavily scrutinized. Debouncing vs. Throttling Every JavaScript object has a private property (

2. What is Hoisting, and how does it differ between var , let , and const ?

function myPromiseAll(promises) return new Promise((resolve, reject) => let results = []; let completed = 0; if (promises.length === 0) resolve(results); return; promises.forEach((promise, index) => Promise.resolve(promise) .then((value) => results[index] = value; completed++; if (completed === promises.length) resolve(results); ) .catch((error) => reject(error); ); ); ); Use code with caution. 4. Advanced Coding Patterns & Machine Coding

When to use which array method for data manipulation?