javascript

this in functions, arrow functions, class methods, and class arrow function properties

Functions & Class Methods both bind this when/how/where they are called. it is sometimes called dynamic binding Arrow Function & Arrow Function Class Properties both bind this when/how/where they

javascript

Simple Fetch API Example

let request = new Request('https://localhost:5001/api/values'); fetch(request) .then((response) => response.json()) .then((json) => console.log(json)); https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API

javascript

Simple Example of Using the Browser's History API

This little History API demo hooks in to the browser button. We ran it using the the Firefox Developer Console. The demo does three things: Adds an onpopstate = (e) => console.log(e.

nodejs

import m = require("m") vs import * as m from "m"

Image by Varsha Y S (Own work) [CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0)], via Wikimedia Commons If you think you understand quantum mechanics, you don't understand quantum mechanics.

nodejs

Copy to clipboard from NodeJS

const output = "some string"; require("child_process").spawn("clip").stdin.end(output);

javascript

VSTS Test Coverage with Mocha, Istanbul, NYC, Coburtura and Junit

package.json "scripts": { "test": "nyc -r cobertura -r html mocha **/*test*.js -R mocha-junit-reporter" }, "devDependencies": { "mocha": "^2.5.3", "mocha-junit-reporter&

typescript

The power of ES 2017 (es8) in TypeScript even with NodeJS 6.11.0

{ "compilerOptions": { "module": "commonjs", "target": "es6", "lib": [ "es2017", "dom" ] }, "exclude": [ "node_modules" ] } This tsconfig.

javascript

Legitimate uses of undefined in JavaScript

As function argument placeholders? Yes. To mark a variable for garbage collection? Yes. For instantiation? No. let x = undefined; // don't do this