Q771. 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...
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Q772. Why do you need modules?
Before ECMAScript 2015 (ES6) introduced native modules (`import`/`export`), JavaScript ran in a single global scope (`window`), leading to variable name collisions, secur...
Q773. 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...
Q774. How do you handle environment variables in Next.js?
Next.js has built-in support for environment variables managed through `.env` files with strict client/server boundary isolation: ### File Priority Hierarchy: 1. `.env.de...
Q775. What are key modifiers?
Vue supports key modifiers on `v-on` for handling keyboard events. Let's take an example of keyup event with enter keycode. ```html ``` Remembering all the key codes is r...
Q776. 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); ...
Q777. What is module and package in Python?
In Python, module is the way to structure program. Each Python program file is a module, which import s other modules like objects and attributes. The folder of Python pr...
Q778. 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...
Q779. 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; ...
Q780. 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...