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…

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 list of one-liners you should know to up your knowledge of JavaScript. — 1. Generate a random string We can use Math.random() to generate a random string, it’s very convenient when we need a unique ID. 2. Escape HTML special characters If you know about XSS, one of the solutions is to escape HTML strings. 3. Uppercase the first character of each word in a string This method is used to uppercase the first character of each word in a string.

6 React Tips That Every Developer Should Know About. — That’s a terrible problem In React, we often write conditional statements to display different views, Like this simple example. But when the code size of the project is large enough and there are a lot of JSX conditionals, things can quickly get out of hand. The code becomes extremely messy and poorly readable. …

Introduction In the front-end interview process, interviewers often ask questions about the this keyword, which even those who have worked for many years may know only a little about. Therefore, this article analyzes the this keyword in detail, so that others can deeply understand it. Map Outline

11 Tricks You Must Know If You Choose Chrome as Your Development Tool — Chrome browser, as the closest partner of front-end developers, I believe you must be familiar with it. We can use it to view network requests, analyze web page performance, and debug the latest JavaScript features… In addition to these, it also provides many powerful but uncommon functions, which can greatly…

We often encounter JavaScript object traversal scenarios in our work, but we don’t know the appropriate usage and the difference between them. Therefore, I have systematically sorted out the common methods of JavaScript object traversal for your reference. Here is the mind map