JavaScript Interview Questions for Freshers 1. What are the different data types present in javascript? To know the type of a JavaScript variable, we can use the typeof operator. 1. Primitive types String - It represents a series of characters and is written with quotes. A string can be ...
The answer to this question can be explained step by step in the following way – JavaScript executes synchronous code using a call stack (LIFO – Last In, First Out). Each function call is pushed onto the stack and popped off once it finishes executing. Then we have an event loop in ...
And a couple of side points here that can sometimes trip someone up in answering this question: Passing an array to the push() method of another array pushes that entire array as a single element onto the end of the array. As a result, the statement arr2.push(arr3); adds arr3 in ...
for (let i = str.length – 1; i >= 0; i–) { reversed += str[i]; } return reversed; } Sample Answer 3. Given an array of numbers, write a function to find the largest and smallest numbers in the array. By presenting the candidates with this question, managers can gauge how ...
Employers may focus a question on this to evaluate how often you investigate new features. Consider researching developments in JavaScript before your interview, so you can describe updates, highlighting your enthusiasm for the technology industry. In your answer, define what strict mode is, and ...
Javascript Interview Questions and Answers PPTproject questionanswer ppt
JavaScript Certification Questions and Answers JavaScript Interview Questions for Experienced 1Q) What is JavaScript? Ans:JavaScriptisa scripting language. It is different from Java language. It is an object-based, lightweight, and cross-platform. It is widely used for client-side validation. ...
JAVASCRIPT INTERVIEW QUESTIONS & ANSWERS JavaScript is a lightweight, interpreted programming language. What is JavaScript? JavaScript is a lightweight, interpreted programming language with object-oriented capabilities that allows you to build interactivity into otherwise static HTML pages. The general-purpo...
Advanced SQL Interview Questions and Answers Part 2 Practice Interview Question 2 continued Data Mining vs. Data Warehousing Ternary/Three-valued Logic in SQL Find Maximum Value Without Using Aggregate SQL Injection Example and Tutorial SQL Injection Prevention Blind SQL Injection Example Parameterized Quer...
This jQuery interview question is based on event handling. jQuery provides good support for handling events like button click. You can use following code to hide an image, found using Id or class. What you need to know is the hide() method and how to setup an even handler for button, ...