5 magical JavaScript knowledge points you may not know! — Preface Recently I was asked a few strange interview questions. They are different from the regular questions: these interview questions seem very easy, but they test your thorough understanding of JavaScript. How many can you answer correctly? 1. Can “x !== x” return true？ What should be the value of “x” to output “hello fatfish”? It’s amazing…

Make your JavaScript more readable and extensible with these ES6 code tips. — Preface ES6 has brought us a lot of convenience in programming. The functions that used to be realized with a lot of code have now become very concise. This article summarizes 7JavaScript tricks I often use in my work, I hope it can help you too. 1. Find the max or min value in the array Sometimes, we need to find…

A front-end friend of mine was asked such a question when he went for an interview. — A front-end friend of mine was asked such a question when he went for an interview. He only answered part of it and wanted me to give him some popular science when he came back, so I wrote this article. What is NGINX? NGINX (engine x) is a lightweight, high-performance HTTP and reverse…

JavaScript is the devil, be careful with it. — Friends, I wrote the following code for a key project to show off my superior programming skills. No one knew what it was until my boss saw it, then he wanted to fire me outright, and I was terrified. It is really hard to imagine that the following code can…

I believe you have had such an experience. After developing a requirement, there is no problem during self-testing, and then the code is sent to the test environment and handed over to QA for testing. After QA tests, it is found that there is no problem, so the project is…

5 weird interview questions. — JavaScript is a very good programming language, but at the same time, it often baffles me. Maybe I don’t know enough about it! Sometimes I really can’t figure out how it works. Do you know the correct answer to these quirky questions? 1. Why do “false == []” and “false == ![]” both return true? My friends, please don’t be surprised that it…

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…

7 reasons why programmers often burn out or crash, from my experience as a front-end developer. — As a front-end developer, I think I can say it’s an awesome career. But at the same time, it’s also at times very frustrating. There are all kinds of accidents every day, which are really surprising, stressful — and sometimes even exciting. I’ve listed seven such accidents below that sometimes…