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…

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…

4 Custom React Hooks to Improve Your Efficiency — My friends, if I had learned these 4 React hooks earlier, maybe I could have written more beautiful code. They greatly improved my work efficiency and the scalability and readability of my code. You must want to learn them too? 1. useMount In the past, I often wrote this style of code…

Please be sure to learn these skills — Preface In the past, I wrote a lot of junk code, and now that looks terrible. When I saw those code fragments again, I even doubted whether I was suitable to be a programmer… 1. Promise callback hell Promises provide an elegant way to handle asynchronous operations in JavaScript. This is also one of the…

10 Tricks About Reduce That Make You Write Less And Do More. — My good friend, as a front-end developer, you must use the reduce function a lot, it is a powerful and useful array API, but today I want to share with you 10 advanced tricks and tips about it, come on! 1. As an adder and accumulator Using “reduce”, we can easily implement the function of adding…

99% of people may not necessarily know the answer. — Preface Recently my friend Candy participated in an interview and he was asked to answer 10 questions in the first round. Obviously, as an experienced engineer, he was annoyed with this matter and thought along the lines of, “I have 5 years of work experience, why do I need to do…

Do you know all of these tricks? — 1. Use object instead of “switch” We often use switch to handle different things, but have you ever thought of using an object to greatly simplify your code?(It works in some simple scenarios) You only need to use an object to achieve your goal. 2. Use the “includes” method instead of multiple “if” Do you often write code like this? Multiple conditions can…