System Design · Junior · Question 65 of 75

What is progressive enhancement?

✓Correct answer: Building a working baseline (HTML, forms) first, then adding JavaScript and advanced features for capable browsers
2Releasing features gradually to users
3Increasing image quality while loading

Explanation

If JS fails or loads slowly, users can still read and submit forms. Server Actions with <form action> follow this idea.

Further reading

MDN Glossary: Progressive Enhancement ↗

Test yourself

Take the System Design · Junior quiz: questions and options are shuffled, and you get a review of your mistakes at the end.