Yes, it can be true, and there are 6 ways — amazing! — Recently, I was asked a very interesting interview question: Can (a== 1 && a==2 && a==3) ever evaluate to true in JavaScript?. I almost lost the job opportunity because I couldn’t answer. At that moment, I was shocked by the question and thought the interviewer was joking.

An interview experience that made me so sad. — This is an interview experience that happened to my friend not long ago. The interviewer wanted him to implement the Promise.all function. Unfortunately, my friend didn't play well on the spot and couldn't answer the question. After the interview, the interviewer rudely said to him: “Your foundation of JavaScript is…

Do you only use React? Do you know Vue? — Recently, my friend failed an interview simply because she was not familiar with Vue.js. She usually uses React most of the time at work, so she didn’t bother to learn about other front-end frameworks. Should we be familiar with all the front-end frameworks in the world? No, that is extremely…

A secret that most people don’t know. — Preface Recently, I participated in an interview that made a deep impression on me. After many twists and turns, I finally got the offer. You can’t imagine what I went through. 1. My interview process Interviewer： Please tell me what happened when “npm run xxx”? The more detailed the better. Me： I thought to myself…

Why does parseInt(0.0000005) in JavaScript print 5? An amazing question! — Preface Recently, I have had a strange problem when developing a project, parseInt (0.0000005) === 5 😱. Normally, the output 0 is correct, but why 5? Let’s explore this problem together. 1. When do you use parseInt？ First of all, when do you usually use parseInt? Most of the time, we use it to parse a string…

Yes, it can be true, and there are 6 ways — amazing! — Recently, I was asked a very interesting interview question: Can (a== 1 && a==2 && a==3) ever evaluate to true in JavaScript?. I almost lost the job opportunity because I couldn’t answer. At that moment, I was shocked by the question and thought the interviewer was joking.

A girl’s interview experience — Sep. is the best time to change jobs again. I fantasize that as long as I change my job, I can leave this “broken place”, make more money and do the most comfortable things. But it backfired. Recently, a schoolgirl was changing jobs. She prepared a lot of questions before…

99.9% of developers don’t know all of them. — As front-end developer engineers, we often need to make cool animation effects. You know, that’s very interesting. In this article, I want to share with you 10 animation libraries that can greatly improve our work efficiency and through which we can create amazing animation effects. 1. Animate.css Link Animate.css provides many animations…

Regular expressions can greatly improve your efficiency — Preface What do you think about regular expressions? I guess you’d say it’s too obscure, I’m not interested in it at all. Yes, I used to be like you and thought I would never learn it in my life. But we can’t deny that it’s really powerful, I use it a…