Q211. What are the problems of using render props with pure components?
If you create a function inside a render method, it negates the purpose of pure component. Because the shallow prop comparison will always return false for new props, and...
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Q212. What is windowing technique?
Windowing is a technique that only renders a small subset of your rows at any given time, and can dramatically reduce the time it takes to re-render the components as wel...
Q213. How do you print falsy values in JSX?
The falsy values such as false, null, undefined, and true are valid children but they don't render anything. If you still want to display them then you need to convert it...
Q214. What is the typical use case of portals?
React Portals are primarily used to render UI components such as **modals, tooltips, dropdowns, hovercards, and notifications** outside of their parent component's DOM tr...
Q215. How do you create reactive objects?
In version 3.0 you can create a reactive object with the reactive() API. ```javascript const reactiveState = reactive({ count: 0 }) ``` In version 2.6, you can create rea...
Q216. How do you set default value for uncontrolled component?
In React, the value attribute on form elements will override the value in the DOM. With an uncontrolled component, you might want React to specify the initial value, but ...
Q217. What is your favorite React stack?
Even though the tech stack varies from developer to developer, the most popular stack is used in react boilerplate project code. It mainly uses Redux and redux-saga for s...
Q218. What is the difference between Real DOM and Virtual DOM?
Below are the main differences between Real DOM and Virtual DOM, | Real DOM | Virtual DOM | | ------------------------------------ | ------------------------------------ ...
Q219. How to add Bootstrap to a react application?
Bootstrap can be added to your React app in a three possible ways, 1. Using the Bootstrap CDN: This is the easiest way to add bootstrap. Add both bootstrap CSS and JS res...
Q220. Can you list down top websites or applications using react as front end framework?
Below are the `top 10 websites` using React as their front-end framework, 1. Facebook 2. Uber 3. Instagram 4. WhatsApp 5. Khan Academy 6. Airbnb 7. Dropbox 8. Flipboard 9...