React · Theory

Features of React

Theory

6/94

Features of React

Features worth saying, not a buzzword dump: reusable components, JSX (UI next to logic), one-way data flow, a virtual DOM / reconciler so you update state not innerHTML, and hooks for state and effects in functions.

Declarative means you describe the UI for this state — React figures the DOM patches. Unidirectional means props down. Huge ecosystem: Router, Testing Library, Next.js. Honest limit: you assemble that stack yourself.

Viva: four features, one plain sentence each. Don’t recite ‘SEO friendly’ as a core React feature — SPA SEO needs extra work (SSR/meta).

Features of React — on screen — Notebook ₹49. Same Price can sit on ten cards. Components + one-way data + JSX.

Exam tip

Four features. One sentence each.

Example

// Reusable components
function Price({ amount }) {
  return <span>₹{amount}</span>;
}

function Card() {
  return (
    <article>
      <h2>Notebook</h2>
      <Price amount={49} />
    </article>
  );
}

Features of React — on screen: Notebook ₹49. Same Price can sit on ten cards. Components + one-way data + JSX.

Short notes

DefComponents + JSX + one-way data.
RuleState in → UI out.
TrapCalling SPA ‘SEO by default’.

React · Theory

Features of React

← All stacks

Theory

6/94

Features of React

Viva: four features, one plain sentence each. Don’t recite ‘SEO friendly’ as a core React feature — SPA SEO needs extra work (SSR/meta).

Features of React — on screen — Notebook ₹49. Same Price can sit on ten cards. Components + one-way data + JSX.

Exam tip

Four features. One sentence each.

Example

// Reusable components
function Price({ amount }) {
  return <span>₹{amount}</span>;
}

function Card() {
  return (
    <article>
      <h2>Notebook</h2>
      <Price amount={49} />
    </article>
  );
}

Features of React — on screen: Notebook ₹49. Same Price can sit on ten cards. Components + one-way data + JSX.

Short notes

DefComponents + JSX + one-way data.
RuleState in → UI out.
TrapCalling SPA ‘SEO by default’.

Features of React

Example

Short notes

Questions

Features of React

Example

Short notes

Questions