JavaScriptJS API Intersection Observer and lazy loading
Mapbox recently released Global View, which can run smoothly and smoothly on both Web and Mobile. So I changed the map on my blog. Since this map is not on the first screen on my blog, I decided to lazy load it, and found this very useful API
JavaScriptWhy is it better not to use the index of the array as the key in React?
When you're writing or reading someone else's React code that renders a list, it's easy to see the use of index as a Key, which looks good and avoids React's Key Warning; however, doing so is one of the most common React mistakes, or at least it's dangerous
JavaScriptUnderstand microtasks and macrotasks in JavaScript
If a piece of JavaScript code contains a setTimeout almost all front-end students know that the code will be delayed (asynchronous) execution, but if the code at the same time there is a setTimeout, await, and Promise resolve, then we can still say that the order of their successive execution?
JavaScriptConfigure the global .gitignore file
Often times, when reviewing code, you'll see that the .gitignore file has some new developers' own environment variables such as .vscode. .vscode is the configuration file for vscode, and if everyone puts their environmenteditor configuration into .gitignore, it will result in a very long and hard to maintain .gitignore file. maintenance. Is there any way to fix this in order to keep the project clean and tidy? Translated with www.DeepL.comTranslator (free version)
JavaScriptHow to implement a time control using Canvas
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JavaScriptCoronavirus map revolution
A while ago we released a map that dynamically shows the global trend of novel coronavirus outbreaks, and this map has gone through many iterations, combining inspirations from the East and the West, and has finally come to a version that we are satisfied with so far. Today, we're going to talk about the story behind the development of this map: what we wanted to express through the map and the technical solutions we used to make it happen. Translated with www.DeepL.comTranslator (free versio
JavaScriptMake a dot-matrix world map from scratch
Recently, many people have seen the map I put on my home page and asked me how I did it or what plug-ins I used. ![e7c39be65f0158f921530926ca16b612.gif](https:cdn.zhuwenlong.comuploadimageScreen
JavaScriptJavaScript add 0 before number tips
A friend who often processes financial data may encounter a need to convert a string of a fixed length to a fixed length, such as 123 = 000123. Usually we will try this: let num = 123; c
JavaScriptTravis-ci SSH Deploy
We know that the continuous integration tools such as Travis-ci can help us to do unit tests after the code is submitted. Is there any way to automatically deploy the code through SSH to the traget ma
JavaScriptCode quality control for writing code like a senior engineer
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JavaScriptHow to Debug Node.js C++ Addon Module with VS Code
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JavaScriptWeb APP/JavaScript Download Large File Solution
With the increasing ability of browsers to process data and the popularity of Web APP, many times we will need to download and save the data processed by the browser: such as the report generation CSV