Date Picker in React — React Technical Interview Questions & Answers

Date Picker in React

Date Picker in React

  • Native <input type="date" value={day} onChange={…} /> stores YYYY-MM-DD. Enough for many forms. Calendar popups: a library. Always keep the value as a string or Date consistently — mixing is a bug factory.
  • Date Picker in React — on screen: date input 13 Aug 2002. Value is yyyy-mm-dd string.

Technical Interview Tip: Controlled date input first.

Code Examples for Date Picker in React

Example

// Date
import { useState } from "react";

export default function Dob() {
  const [day, setDay] = useState("2002-08-13");
  return <input type="date" value={day} onChange={(e) => setDay(e.target.value)} />;
}

Date Picker in React — on screen: date input 13 Aug 2002. Value is yyyy-mm-dd string.

How to Explain Date Picker in React to an Interviewer

Explain Date Picker as if you are teaching a junior — definition, then one tiny UI.

Native type=date. Format : YYYY-MM-DD.

What does the example show on screen (or print), and what does that prove?

Date Picker in React — on screen: date input 13 Aug 2002

What mistake do freshers make with Date Picker?

Lib : when you need a calendar UI.