The basic JavaScript coding interview questions are: 1. Write a JavaScript function to calculate the sum of two numbers.When managers ask this question, they are looking for the candidate’s basic understanding of JavaScript. They assess their understanding of basic syntax along with problem-...
For robust code, verify an object’s type using typeof prior to interacting with it. function processValue(value) { // Handle special cases first if (value === null) return "null"; if (value === undefined) return "undefined"; // Check for arrays (remember: typeof [] === "object...
Submit an interview question Submitted questions and answers are subject to review and editing, and may or may not be selected for posting, at the sole discretion of Toptal, LLC. Name Email Enter Your Question Here … Enter Your Answer Here … I agree with the Terms and Conditions of ...
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(){ var a = b = 3; })(); console.log("a defined? " + (...
Shanyue has more than 600 questions in Dachang's interview question bank. And it contains interview questions in various directions, such as React, HTTP, etc. But many of them are about code articles: One part examines your programming skills ...
Front End Interview Handbook is part of GreatFrontEnd! Find the latest version of this page on GreatFrontEnd.These are the front-end version of LeetCode questions, but with less emphasis on complicated algorithms and more focus on practical use cases. However, they can also be questions simply...
Facing your first JavaScript job interview isn’t so daunting. If you know how to write code and build complete front-end applications in JavaScript, you should have no problem answering the questions they will ask during the interview. Still, it’s important to prepare for the interview questi...
I didn't apply for the job, because I was working at the (now defunct) startupViewzi, and I didn't want to uproot from Dallas and move to California. Just for kicks, I asked the recruiter if it'd be okay if I went ahead and tried my hand at their code questions anyway. After...
would recommend doing a search for things like “JavaScript tough interview questions” or “JavaScript tricky questions”. And even if you don’t get them in an interview, at least you know them for future problems if they ever come up. Plus, you can trick your friends with them as well...
题目来自25 Essential JavaScript Interview Questions。闲来无事,正好切一下。 一 What is a potential pitfall with usingtypeof bar === "object"to determine if bar is an object? How can this pitfall be avoided? 老生常谈的问题,用typeof是否能准确判断一个对象变量,答案是否定的,null的结果也是 objec...