In my last post, I wrote about how to mock JavaScript Fetch API on Jest using TypeScript. You can check it out here. Now I will demonstrate how to mock an XMLHttpRequest (XHR) using the same stack: Jest and TypeScript.
Tag: ifttt
gyp: No Xcode or CLT version detected macOS Catalina | Anansewaa
Did you recently update your macOS Catalina to version 10.15.2? If you did, then you probably in the same boat too. What I immediately noticed from my terminal is this new shiny error about gyp: No Xcode or CLT version detected any time I ran either yarn install or npm install
Simple PHP code to push files to AWS S3
So you have a web application, website or game with a PHP back-end. One of your use case is saving files to disk (images, Excel or what not). Its 2017 and you figure you should probably use a storage service instead of saving and serving files from your server.
An introduction to scope in JavaScript
Check out my Discover Functional JavaScript book. “An introduction to scope in JavaScript” is published by Cristian Salcescu
4 Major Patterns for Accessible Drag and Drop
In order for web pages and applications to be truly accessible, a user must be able to do anything with a keyboard that can be done with a mouse. When it comes to drag and drop, I’m often asked if it is acceptable to provide an accessible workaround.
Overview of how does CSS works behind the scenes?
Let’s start by understanding what actually happens to our CSS code when we load up a web page in a browser. When a browser starts to load the initial HTML file, it takes the loaded HTML code and parses it, which means that it will decode the code line by line.
Um. You should change your title to “Understanding static in React and possibly future versions of…
Um. You should change your title to “Understanding static in React and possibly future versions of JS”. Static properties (not methods) are available in React, because of this Babel plug-in, which is a precursor to this ES suggestion (which is not yet implemented).
Understanding Prototypes in JavaScript
Prototypes is a weird and much avoided topic but vital towards mastering JavaScript. While classes are much easier to understand and is often the starting point for many when learning object oriented…
How to Get Started With React Hooks: Controlled Forms
React Hooks are a shiny new proposal that will allow you to write 90% cleaner React. According to Dan Abramov, Hooks are the future of React. That sounds good and all but what are Hooks and how will they help me write better code? Glad you asked.
A guide to prototype-based class inheritance in JavaScript
Computer languages often provide a way for one object to be inherited fromanother object. The inherited object contains all properties from its parent object. In addition, it will also specify its own set of unique properties. Follow me on Twitter for JavaScript tips and book announcements.