UI Technical Lead
UI Technical Lead Interview Questions and Answers
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Q1. Click counter in react
Implement a click counter in React
Create a state variable to store the count
Increment the count when a button is clicked
Display the count in the UI
Q2. Event emitter using javascript
Event emitter in JavaScript allows objects to subscribe and listen for events.
Event emitter is a design pattern where an object (the emitter) maintains a list of listeners and notifies them of events.
Listeners can subscribe to specific events and execute a callback function when the event is emitted.
Example: const emitter = new EventEmitter(); emitter.on('event', () => { console.log('Event emitted!'); }); emitter.emit('event');
EventEmitter is a built-in module in Node.js that...read more
Q3. Define concepts of OOPS
OOPS stands for Object-Oriented Programming System. It is a programming paradigm based on the concept of objects.
OOPS focuses on creating objects that contain data and methods to manipulate that data.
Encapsulation is the concept of bundling data and methods that operate on the data within a single unit, called an object.
Inheritance allows one class to inherit properties and behavior from another class.
Polymorphism allows objects to be treated as instances of their parent clas...read more
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