Unibic Foods Interview Questions and Answers

Arrow functions are a concise way to write functions in JavaScript.

• Arrow functions are anonymous functions defined using the '=>' syntax.

• They have a shorter syntax compared to traditional function expressions.

• Arrow functions do not have their own 'this' keyword, instead they inherit it from the parent scope.

Hoisting is a JavaScript behavior where variable and function declarations are moved to the top of their containing scope during compilation.

• Variable declarations are hoisted to the top of their scope, but not their initializations.

• Function declarations are fully hoisted, including their definitions.

• Hoisting can lead to unexpected behavior if not understood properly.

Implementing a carousel for displaying multiple images or content in a rotating manner.

• Use a library like Slick or Owl Carousel for easy implementation

• Ensure images/content are responsive for different screen sizes

• Add navigation arrows or dots for user interaction

• Consider adding autoplay feature with customizable speed

• Optimize performance by lazy loading images

Design an Elevator system for efficient vertical transportation

• Consider the number of floors in the building

• Implement a scheduling algorithm to optimize elevator movement

• Include safety features such as emergency stop button

• Allow for both manual and automatic operation

• Consider peak hours and traffic flow in the building

Polyfill of Promise is a code that adds Promise functionality to browsers that do not support it natively.

• Polyfill is a piece of code that provides the technology that you expect the browser to provide natively.

• Polyfill for Promise adds Promise functionality to browsers that do not support it, allowing developers to use Promises in their code.

• Examples of Promise polyfills include 'es6-promise' and 'promise-polyfill'.

Increase supply of Airbnb by expanding host network, improving listing visibility, and offering incentives.

• Expand host network by reaching out to potential hosts through targeted marketing campaigns.

• Improve listing visibility by optimizing search algorithms and featuring top-rated properties.

• Offer incentives such as discounts for new hosts or bonus rewards for high occupancy rates.

• Collaborate with property management companies to onboard multiple listings at once.