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Title: Add return on investment algorithm to Maths by InukaWijerathna · Pull Request #1906 · TheAlgorithms/JavaScript · GitHub

Open Graph Title: Add return on investment algorithm to Maths by InukaWijerathna · Pull Request #1906 · TheAlgorithms/JavaScript

X Title: Add return on investment algorithm to Maths by InukaWijerathna · Pull Request #1906 · TheAlgorithms/JavaScript

Description: Description Adds a returnOnInvestment function to the Maths/ directory, along with a full test suite. Return on Investment (ROI) is a fundamental financial metric that quantifies how profitable an investment is relative to its cost: ROI = (Gain from Investment - Cost of Investment) / Cost of Investment × 100 Files changed Maths/ReturnOnInvestment.js — implementation with JSDoc, type checking, and RangeError for invalid inputs Maths/test/ReturnOnInvestment.test.js — 8 test cases covering positive/zero/negative ROI and all error paths Checklist Follows the code style of the project (ESM exports, no console, JSDoc) Throws TypeError for non-number inputs Throws RangeError for invalid cost (zero or negative) All test cases pass Reference: https://www.investopedia.com/terms/r/returnoninvestment.asp

Open Graph Description: Description Adds a returnOnInvestment function to the Maths/ directory, along with a full test suite. Return on Investment (ROI) is a fundamental financial metric that quantifies how profitable an ...

X Description: Description Adds a returnOnInvestment function to the Maths/ directory, along with a full test suite. Return on Investment (ROI) is a fundamental financial metric that quantifies how profitable an ...

Opengraph URL: https://github.com/TheAlgorithms/JavaScript/pull/1906

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26edd9d Add return on investment algorithm to Maths InukaWijerathna Jun 5, 2026 https://Github.com/TheAlgorithms/JavaScript/pull/1906/commits/26edd9d7f2d261d9fe07579e5b68d91377a2a9c0
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