Q311. Why do you need web storage?
Web storage is more secure, and large amounts of data can be stored locally, without affecting website performance. Also, the information is never transferred to the serv...
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Q312. How do you memoize a component?
There are memoize libraries available which can be used on function components. For example `moize` library can memoize the component in another component. ```jsx harmony...
Q313. What is the use of <option> tag?
The `` tag is used to define an option in a dropdown list. The 'value' attribute in `` tag is specifies the value of the option that will be submitted when the form is su...
Q314. How do you check web storage browser support?
You need to check browser support for localStorage and sessionStorage before using web storage, ```javascript if (typeof Storage !== "undefined") { // Code for localStora...
Q315. How you implement Server Side Rendering or SSR?
React is already equipped to handle rendering on Node servers. A special version of the DOM renderer is available, which follows the same pattern as on the client side. `...
Q316. What is Python's standard way of identifying a block of code?
Python uses **indentation** (typically 4 spaces according to PEP 8) rather than curly braces (`{}`) or `begin`/`end` keywords to define blocks of code such as functions, ...
Q317. How do you check web workers browser support?
You need to check browser support for web workers before using it ```javascript if (typeof Worker !== "undefined") { // code for Web worker support. } else { // Sorry! No...
Q318. How to enable production mode in React?
You should use Webpack's `DefinePlugin` method to set `NODE_ENV` to `production`, by which it strip out things like propType validation and extra warnings. Apart from thi...
Q319. Give an example of a web worker
You need to follow below steps to start using web workers for counting example 1. Create a Web Worker File: You need to write a script to increment the count value. Let's...
Q320. INTERSECTION in relational algebra?
In relational algebra and set theory, the **INTERSECTION** of two sets $A \cap B$ yields only the tuples that appear in **both** relation sets simultaneously. ### SQL Imp...