Q241. What does UPPER do?
Converts to uppercase. `LOWER` to lowercase. `INITCAP` (Oracle/PostgreSQL) capitalizes first letter of each word. ```sql SELECT UPPER('hello'); -- HELLO ```
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Q242. What is the purpose of the <fieldset> tag in HTML?
The **``** tag is used in HTML forms to logically group related form controls and labels together, both visually and semantically: ```html Billing Address Information Str...
Q243. What is Intersection types in TypeScript?
Intersection types allow you to combine multiple types into a single type that has all the properties and methods of each constituent type. It is denoted by the "&" symbo...
Q244. What are fragments?
It's a common pattern or practice in React for a component to return multiple elements. _Fragments_ let you group a list of children without adding extra nodes to the DOM...
Q245. Round up to the nearest integer?
To round a numeric value up to the next nearest integer, use the **`CEIL()`** (or **`CEILING()`**) function: ```sql SELECT CEIL(25.01); -- Returns 26 SELECT CEIL(25.00); ...
Q246. What is the difference between HTML tag and HTML element?
HTML tag is just opening or closing entity. For example `` and `` are called HTML tags. HTML element consists of opening tag, closing tag and content(optional for content...
Q247. What is Union types in TypeScript?
Union types allow you to define a type that can hold values of multiple types. It is denoted by the "|" symbol. ``` type UnionType = string | number; let val: UnionType; ...
Q248. What is scope in javascript?
Scope is the accessibility of variables, functions, and objects in some particular part of your code during runtime. In other words, scope determines the visibility of va...
Q249. Why fragments are better than container divs?
Below are the list of reasons to prefer fragments over container DOM elements, 1. Fragments are a bit faster and use less memory by not creating an extra DOM node. This o...
Q250. What is the default port for a Next.js app?
By default, Next.js runs on **port 3000** for both the development server (`next dev`) and production server (`next start`). When you launch `npm run dev`, you can access...