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Learn/L4 · TypeScript

Optional fields

A '?' marks a field as optional.

Difficulty 2/5
Short

Plain English

A '?' marks a field as optional. Picture it like this: A nickname line on a form. In the apps you ship (Agentify, wedding portals, CRM), you will bump into this on almost every screen — name it clearly when you prompt your coding agent.

Analogy

A nickname line on a form.

Go deeper

A '?' marks a field as optional.

Common mistakes

  • Letting the AI rename this concept three different ways in one PR.
  • Building UI before you can say what is stored and who can change it.

AI-agent trap

Agents may invent jargon here. Ask them to explain the concept in plain English first, then map it to your schema and one real screen.

Summary

A '?' marks a field as optional. A nickname line on a form. Ask yourself: where does this live in the database, which function changes it, and which screen shows it?

Confidence: