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 ...
Basic JavaScript questions cover concepts like data types, variables and scoping, array, string manipulation, OOP (Object Oriented Programming), control flow, error handling, DOM manipulation, and asynchronous programming. The basic JavaScript coding interview questions are: ...
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JavaScript Job Interview Questions and Answers 1:: What is JavaScript? JavaScript is a general-purpose programming language designed to let programmers of all skill levels control the behavior of software objects. The language is used most widely today in Web browsers whose software objects tend to...
Advanced Javascript Interview Questions 32. What are Spread Operators in JavaScript? Spread Operators (. . .) in JavaScript are used to “spread” the elements of an array or in JavaScript. By using Spread Operators we can copy output array/object values, merge them, pass these values to a...
In writing the answers I was helped by AI and the book "JavaScript: The Definitive Guide" by David Flanagan. Questions 1.What is JavaScript and what is the meaning of "interpreted" language? 2.What is the lexical scope? 3.What is the difference between scope and context?
我这里有一个数组 const options = [ { id: 1, content: 'Hello' }, { id: 2, content: 'Hi' } ] const answers = [ { id: 400, content: 'World', optionKey: 1 }, { id: 500, content: 'There', optionKey: 2 } ] expected output ...
Just create a variable for the otherChoiceValue and set it to blank and then if your field for Other is True, you both push the _other into the array and fill the otherChoiceValue variable with the value it needs. 01 const checkBoxArray = []; 02 let valueOtherChoice = ''; 03 if ...
37 Essential JavaScript Interview Questions and Answers (toptal.com) What is a potential pitfall with using typeof bar === "object" to determine if bar is an object? How can this pitfall be avoided? View the answer → What will the code below output to the console and why? (function(...
We have compiled a list of the most common interview questions you may face at your next JavaScript interview to help you. A quick review of them will refresh your knowledge of the language and give you confidence that you can supply the correct answers. ...