I am not sure if getElementById and getElementByClassName are more readable.

Hi, my name is Tom Smykowski, I'm a staff full-stack engineer. I build and scale SaaS platforms to millions of users, working end-to-end from system architecture to frontend to mobile. On this blog I share what I learn about software engineering, readability, and maintainability in code.

What This Article Covers

This article delves into the nuances of using getElementById, getElementByClassName, and querySelector when manipulating the DOM. It explores the readability, maintainability, and performance implications of each method, providing insights into which might be the most effective choice in various scenarios.

Questions This Article Answers

• What are the key differences in readability between getElementById, getElementByClassName, and querySelector?
• How does maintainability factor into choosing between these DOM manipulation methods?
• In what situations might the performance differences between these methods become significant?
• Why might querySelector be a preferable default choice?
• What are some best practices for optimizing DOM manipulation in list-heavy pages?

Length and Time

An insightful exploration with practical insights and considerations. Approximately 5 minutes to read.