ASENTECH UI Developer Interview Questions and Answers

20 Aptitude questions, 30 React/HTML/CSS MCQs, 2 coding questions on an outdated compiler

Q1. Difference between Var,let and const
Ans. 
Var is function scoped, let and const are block scoped. Var can be redeclared and reassigned, let can be reassigned but not redeclared, const cannot be reassigned or redeclared.
• Var is function scoped

• Let and const are block scoped

• Var can be redeclared and reassigned

• Let can be reassigned but not redeclared

• Const cannot be reassigned or redeclared
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Q2. New features in Angular 10
Ans. 
Angular 10 introduces new features like stricter types, optional strict mode, and performance improvements.
• Stricter types with TypeScript 3.9

• Optional strict mode for better type checking

• Improved build times and smaller bundle sizes

• Updated dependencies like TypeScript 3.9 and TSLib 2.0
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Q1. WHat is event loop?
Ans. 
Event loop is a mechanism in JavaScript that allows for asynchronous operations to be executed in a non-blocking way.
• Event loop is responsible for handling asynchronous operations in JavaScript.

• It allows for non-blocking execution of code by continuously checking the call stack and the task queue.

• When the call stack is empty, the event loop moves tasks from the task queue to the call stack for execution.

• Example: setTim...read more
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Q2. What is DOM ?
Ans. 
DOM stands for Document Object Model, a programming interface for web documents.
• DOM is a tree-like structure that represents the elements of a web page.

• It allows developers to manipulate the content, structure, and style of a web page using scripting languages like JavaScript.

• DOM provides methods and properties to interact with HTML elements, such as selecting, adding, removing, or modifying them.

• Example: document.getE...read more
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Q1. HTML, CSS Question and JavaScript Codding Questions
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Q1. It is In Process
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Q1. Angular related question
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Q1. Javascript based questions
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Q1. Generic interview
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Q1. Reverse a String in Javascript
Ans. 
To reverse a string in Javascript, we can use the built-in reverse() method.
• Convert the string to an array using split() method

• Use the reverse() method to reverse the array

• Convert the reversed array back to a string using join() method
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Q1. Questions on HTML & advance SCSS (functions)
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Q2. Questions on Bootstrap, Javascript, Vue Js
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Q1. Javascript related questions
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Q2. Closures hoisting
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