Tech Formation Web Developer Interview Questions and Answers

Q1. What is the full form of WWW?
Ans. 
World Wide Web
• Stands for World Wide Web

• A system of interlinked hypertext documents accessed via the Internet

• Commonly used to browse websites and access information
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Q2. What is the web?
Ans. 
The web is a system of interconnected documents and resources accessed via the internet.
• The web is made up of websites, web pages, and web applications.

• It allows users to access information, communicate, and interact with others online.

• The web relies on protocols like HTTP and HTML to function.

• Examples include websites like Google, Facebook, and Wikipedia.
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Q3. Why is the mobile number 10 digits?
Ans. 
Mobile numbers are typically 10 digits long to ensure uniqueness and standardization for easy identification and communication.
• Standardization: Having a fixed length of 10 digits makes it easier for systems to validate and process mobile numbers.

• Uniqueness: With 10 digits, there are a large number of possible combinations, reducing the likelihood of duplicate numbers.

• International compatibility: Many countries have ado...read more
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Q4. How to center an item without flex and grid
Ans. 
To center an item without flex and grid, use text-align center for inline elements and margin auto for block elements.
• For inline elements, use text-align: center on the parent element

• For block elements, use margin: 0 auto on the element you want to center

• For inline-block elements, set text-align: center on the parent and display: inline-block on the child
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Q5. Without media query how to make responsive a website
Ans. 
Using flexible units like percentages and viewport units, along with fluid layouts and max-width properties.
• Use percentages for widths instead of fixed pixels

• Use viewport units like vw and vh for font sizes and container dimensions

• Implement fluid layouts that adjust based on screen size

• Set max-width properties to prevent content from becoming too wide on larger screens
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Q6. Different b/w promise and callback
Ans. 
Promises are objects representing the eventual completion (or failure) of an asynchronous operation, while callbacks are functions passed as arguments to be executed after a task is completed.
• Promises provide a more structured way to handle asynchronous operations compared to callbacks.

• Promises can be chained together to handle multiple asynchronous tasks in a more readable manner.

• Callbacks can lead to callback hell, w...read more
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Q1. Basics of HTML CSS like Diff between DOM ,Box model, Semantic tags pseudo classes, pseudo elements, diff b/w == & === , hoisting, debouncing , event bubbling, async await , closures, In react life cycle ...read more
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Q1. Told to create 3 boxes and align them into center of screen
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Q2. Then asked to remove the duplicate elements from given array of string, promises, async await calls , fetch axios etc
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Create a small appilcation and send the code via email

Q1. Questions related to javascript
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