Q1. What is React?
React (aka React.js or ReactJS) is an **open-source front-end JavaScript library** for building user interfaces based on components. It's used for handling the view layer...
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Q2. What are the major features of React?
React offers a powerful set of features that have made it one of the most popular JavaScript libraries for building user interfaces: **Core Features:** - **Component-Base...
Q3. What is the difference between Server Components and Client Components?
In the App Router components are Server Components by default. They run only on the server, can be async, can read databases or secrets directly, and send no JavaScript t...
Q4. When should you use @apply and when should you avoid it?
@apply inlines utility classes into a CSS rule, letting you write component classes while reusing Tailwind's design tokens. ```css .btn { @apply inline-flex items-center ...
Q5. How to create components in React?
Components are the building blocks of creating User Interfaces(UI) in React. There are two possible ways to create a component. 1. **Function Components:** This is the si...
Q6. How do slots and component composition work in Svelte?
Slots let a parent pass markup into a child. A default slot is placed with slot in the child and any children of the parent's component tag fill it. Named slots use slot ...
Q7. When to use a Class Component over a Function Component?
After the addition of Hooks(i.e. React 16.8 onwards) it is always recommended to use Function components over Class components in React. Because you could use state, life...
Q8. What are Pure Components?
Pure components are the components which render the same output for the same state and props. In function components, you can achieve these pure components through memoiz...
Q9. How does v-model work on a custom component?
v-model on a component is syntactic sugar. In Vue 3, v-model="foo" compiles to passing a modelValue prop and listening for update:modelValue. Inside the child you declare...
Q10. What are props in React?
_Props_ are inputs to components. They are single values or objects containing a set of values that are passed to components on creation similar to HTML-tag attributes. H...