P5.js由McCarthy和纽约大学ITP以及其他贡献者共同合作开发,它是一个能够处理可视化编程语言的分支,它使非程序开发人员(如艺术家、设计师、教育工作者和初学者等)能够编写JavaScript代码和创建可视化项目。本课程为Daniel Shiffman老师的p5.js教程。原链接在这:https://ww
In JavaScript, there isn't a distinct data structure referred to as an "associative array." Instead, developers often use objects to achieve similar functionality. Key-value pairs Objects in JavaScript are collections of key-value pairs, where the keys (also called property names) are strings ...
There are lots of different type conversions described in the spec. One of them isToInteger. JavaScript uses it when a standard function expects an integer argument. Before the use of the passed argument, JavaScript appliesToIntegerto the value of that argument. If the value is NaN, thenToIn...
Vue.js uses double braces{{ }}as place-holders for data. Vue.js directives are HTML attributes with the prefixv- Vue Example In the example below, a new Vue object is created withnew Vue(). The propertyel:binds the new Vue object to the HTML element withid="app". ...
Node.js 是一个基于ChromeV8引擎的JavaScript运行环境。 对于这句描述,没有什么太大的观念。可能是欠缺的基础知识太多了。 简单的说 Node.js 就是运行在服务端的 JavaScript。 Node.js 是一个基于Chrome JavaScript 运行时建立的一个平台。 Node.js是一个事件驱动I/O服务端JavaScript环境,基于Google的V8引擎,V8引...
Currying is a core concept of functional programming and a useful tool for any developer's toolbelt. Example 1: let f = a => b => c => a+b+c; let result= f(1)(2)(3); console.log(result);//6 Example 2: <!DOCTYPE html><html><head><metacharset="utf-8"><title>JS Bin<...
What is the difference between unknown, void, null and undefined, never in ts? What are generic constraints in ts? Two ways to define an array type Type assertion in ts Generic functions and generic interfaces How to understand as const?
Breaking Changes in v5.0 Version 5.0 of the Node.js driver is not compatible with Node.js v12 or earlier. If you want to use this version of the driver, You must use Node.js v14.20.1 or greater. This release removes support for callbacks in favor of a promise-based API. The followi...
I'm getting a piece of legacy code which was using this crypto-js but new project is using all WebCrypto API, > CryptoJS.algo.HMAC.create( CryptoJS.algo.SHA256, CryptoJS.enc.Base64.parse(secret) ) .update(`GET\n/api/v0/ipns\nlimit=1000&ts=1693416815`) .finalize() .toString(Crypt...
.toArray()).map( ({name}) =>name ); if(!collections.includes(myNewCollectionName)){ thrownewError(`${myNewCollectionName}doesn't exist`); } BulkWriteError→MongoBulkWriteError BulkWriteErroris now renamed toMongoBulkWriteError. When running bulk operations that make writes you can encounte...