Classes inherit from other classes (like blueprints creating objects). This is typical in languages like Java or C++.
The PDF typically contains:
Describe the Event Loop.The Event Loop manages the execution of multiple chunks of code. It monitors the Call Stack and the Callback Queue.
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function createCounter() let count = 0; return function() count++; return count; ; const counter = createCounter(); console.log(counter()); // 1 console.log(counter()); // 2 Use code with caution. Emulating private methods and data encapsulation. Creating factory functions. Maintaining state in asynchronous callbacks.
: Invokes the function immediately. Pass arguments inside a single array.
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function createCounter() let count = 0; return function() count++; return count; ; const counter = createCounter(); console.log(counter()); // Output: 1 console.log(counter()); // Output: 2 Use code with caution. The Event Loop It monitors the Call Stack and the Callback Queue
How to chain promises and handle errors using .catch() . async/await vs. Promises: When to use which? API Requests: Using fetch() to fetch data from APIs. 4. DOM Manipulation & Event Handling Event Delegation: What is it, and why is it used?
💡 : Always mention performance implications. Interviewers love candidates who care about memory leaks and optimization.