Switch Statements Break the Open/Closed Principle – Use Objects or Maps Instead

The article explains why traditional switch statements violate the Open/Closed principle in JavaScript, outlines the maintenance problems they cause in large front‑end codebases, and demonstrates how object literals or Map structures provide cleaner, more extensible alternatives.

MAPOpen/Closed Principlecode maintainability

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Switch Statements Break the Open/Closed Principle – Use Objects or Maps Instead

JavaScript

Jun 5, 2025 · Frontend Development

Why Object Mapping Beats Switch Statements in JavaScript

This article explains how replacing verbose switch or if‑else chains with object mapping in JavaScript reduces code size, improves readability, eliminates break‑statement bugs, and often yields better performance, while also covering advanced scenarios like function mapping and the Map object.

Code OptimizationObject Mappingswitch statement

0 likes · 5 min read

Why Object Mapping Beats Switch Statements in JavaScript