Tech Formation Front end 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
Answered by AI
Add your answer
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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Create a small appilcation and send the code via email

Q1. Questions related to javascript
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Q1. Find element whose count is more than n/2
Ans. 
Use Boyer-Moore Majority Vote Algorithm to find element with count more than n/2.
• Initialize candidate element and count

• Iterate through array, updating count if same as candidate or decrementing if different

• If count becomes 0, update candidate element

• Iterate again to confirm candidate element count is more than n/2
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Q2. One puzzle based on distance and banana
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Q1. Javascript and react fundamental
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Assignment to create small react application

Q1. Core javascript and web development concept
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They discuss the coding capabilities, and personal things discussion so company never face any loss.

Coding related output based questions and answers.

They discuss codding based questions and too much personal things, they project manager will visite to our basic things like house, family, Current financial condition so on...

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
Add your answer

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
Answered by AI
View 2 more amswers
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.
Answered by AI
Add your answer
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
Answered by AI
View 1 more amswer
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
Answered by AI
Add your answer
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
Answered by AI
Add your answer
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
Answered by AI
Add your answer