Park Plus Interview Questions and Answers

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

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

• Function declarations are fully hoisted, meaning they can be called before they are declared.

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

Closures in JavaScript allow functions to access variables from their outer scope even after the outer function has finished executing.

• Closures are created when a function is defined within another function and the inner function has access to the outer function's variables.

• Closures can be used to create private variables and functions in JavaScript.

• Closures can also be used to maintain state in asynchronous operations...read more

To add a new monetisation channel on Instagram, consider implementing features like in-app purchases, sponsored posts, affiliate marketing, and subscription services.

• Implement in-app purchases for users to buy virtual goods or premium features within the app.

• Introduce sponsored posts where businesses pay to have their content promoted to a larger audience.

• Explore affiliate marketing by partnering with brands to earn co...read more

Engage users with interactive content, collaborate with influencers, utilize hashtags and trends.

• Create engaging and interactive content to attract users organically.

• Collaborate with influencers or industry experts to reach a wider audience.

• Utilize popular hashtags and trends to increase visibility and attract new users.

• Host Twitter chats or Q&A sessions to engage with potential users and showcase the value of your pro...read more

Perform RCA on sudden dip in number of orders from a restaurant

• Check for any technical issues on the restaurant's online ordering platform

• Investigate if there have been any changes in menu offerings or pricing

• Look into any marketing campaigns that may have impacted customer behavior

• Analyze customer reviews and feedback for any issues or complaints

• Consider external factors such as competition or economic conditions affe...read more

There are approximately 1.5 million cabs in India.

• Consider the population of India (around 1.3 billion) and the ratio of cabs to population.

• Take into account the number of registered taxis in major cities like Mumbai, Delhi, Bangalore, etc.

• Factor in the number of ride-sharing services like Ola and Uber operating in the country.

The box model is a concept in CSS that describes how elements are rendered on a web page.

• The box model consists of four components: content, padding, border, and margin.

• The content refers to the actual content of the element, such as text or images.

• The padding is the space between the content and the border.

• The border is a line that surrounds the content and padding.

• The margin is the space outside the border, separatin...read more

let and var are both used to declare variables in JavaScript, but they have some key differences.

• let is block-scoped, while var is function-scoped

• let variables are not hoisted, while var variables are hoisted

• let variables can be reassigned, while var variables can be redeclared

• let variables have temporal dead zone, while var variables do not

map, reduce, and filter are higher-order functions in JavaScript used to manipulate arrays.

• map: creates a new array by applying a function to each element of the original array

• reduce: applies a function to an accumulator and each element in the array, reducing it to a single value

• filter: creates a new array with all elements that pass a test implemented by a provided function