Q211. What is an HTML form?
An **HTML form** (``) is a document container designed to collect user input and transmit it securely to a web server or client-side JavaScript handler. ### Core Form Ana...
Technical Question Bank · Peer-Reviewed
Job Interview Questions and Answers Directory
Search and filter frequently asked interview questions across technical, programming, and behavioral domains. Tailor your interview preparation by difficulty for freshers or experienced developers (1,236 available).
Active:
Difficulty: easy ×
Q212. What is the difference between createElement and cloneElement?
Both `React.createElement` and `React.cloneElement` are used to work with React elements, but they serve different purposes. #### **createElement:** Creates a new React e...
Q213. What does ISNULL(price, 50) return if price is NULL?
If `price` is `NULL`, `ISNULL(price, 50)` evaluates to **`50`**. ### Function Nuances Across Databases: 1. **SQL Server**: `ISNULL(check_expression, replacement_value)` r...
Q214. What is the difference between HTML form's "action" and "method" attributes?
The "action" attribute specifies the URL to which the form data is submitted, while the "method" attribute specifies the HTTP method when submitting the form data(either ...
Q215. What is optional properties in an interface in TypeScript?
In TypeScript, you can define optional properties in an interface by appending a question mark (?) to the property name. This indicates that the property is optional and ...
Q216. What is an IIFE (Immediately Invoked Function Expression)?
IIFE (Immediately Invoked Function Expression) is a JavaScript function that runs as soon as it is defined. The signature of it would be as below, ```javascript (function...
Q217. What is Lifting State Up in React?
When several components need to share the same changing data then it is recommended to _lift the shared state up_ to their closest common ancestor. That means if two chil...
Q218. Which operator searches text patterns?
`LIKE` with wildcards `%` (zero or more chars) and `_` (single char). ```sql WHERE name LIKE 'A%' -- starts with A WHERE name LIKE '%a%' -- contains a WHERE name LIKE '_a...
Q219. How do you decode or encode a URL in JavaScript?
`encodeURI()` function is used to encode an URL. This function requires a URL string as a parameter and return that encoded string. `decodeURI()` function is used to deco...
Q220. What are Higher-Order Components?
A _higher-order component_ (_HOC_) is a function that takes a component and returns a new enhanced component with additional props, behavior, or data. It’s a design patte...