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JavaScript Design Patterns for Coding Interviews

Challenge: Abstract Pattern

Explore how to implement the abstract pattern in JavaScript by designing a Loans constructor that dynamically creates HomeLoan, StudentLoan, or PersonalLoan objects. Understand how to use the getloan function to instantiate loans with distinct interest rates and calculate simple interest based on amount and duration.

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Problem statement

In this challenge, you have the abstract constructor function Loans. There are three types of loans that can be given:

  • HomeLoan

  • StudentLoan

  • PersonalLoan

You need to implement Loans such that it decides which loan instance to instantiate, given the input parameters. Implement a function getloan for this purpose. getloan should take the following parameters:

  • type: type of loan

  • amount: amount of the loan

  • duration: duration of the loan

All the three loans mentioned above have the following properties:

  • amount: the amount of loan required (in dollars)

  • duration: the duration of time (in years) for which the loan is borrowed

  • interest ...