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Monthly archives of “May 2016”

ES6/ES2015 For Newbies Lesson 5: Destructuring
IntermediateThe destructuring assignment syntax is a JavaScript expression that makes it possible to extract data from arrays or objects into distinct variables. Say I have an array: const list = ['a', 'b', 'c', 'd']; If I want to set each...
ES6/ES2015 For Newbies Lesson 4: Spread and Rest Parameters
IntermediateAre you tired of splicing, spiting, and concatenating arrays? Array manipulation is one of the most common things a developer does daily. To help with that, Javascript provided us with language level APIs like Array.split, Array.splice, Array.slice, and Array.concat. While the APIs...
ES6/ES2015 For Newbies Lesson 3: Enhanced Object Literals and Default Values
IntermediateEnhanced Object Literals Objects are essential part of Javascript. It’s no surprise that they’re getting a feature lift in ES6: // Enhanved Object Literals let foo = 'bar'; let myObj = { foo, // same as foo: foo _name:...
ES6/ES2015 For Newbies Lesson 2: Blockscope with Const and Let & Template String
IntermediateES5 variable scopes In ES5, variables are scoped to the closest outer function where they’re declared: function myFunc() { var foo = true; if (foo) { var car = 'tesla'; var website = 'google.com'; } console.log(car); console.log(website); } myFunc(); In...
ES6/ES2015 For Newbies Lesson 1: Arrow Functions
IntermediateIn this introductory lesson, we’re going to learn about Arrow functions from the latest version of Javascript: ES6 or ES2015. What was wrong with context in javascript? In old version of Javascript, the keyword this is functionally bound. meaning when you...
Improve code quality with JsHint
BeginnerWhat is JsHint? JsHint is a code quality tool that helps detect errors and potential problems in your javascript code. It can be used as a standalone command line tool, or a node module to use along side your Node...
Minimal Express Server with Nginx and PM2
DevOpsTools we’ll use Digital Ocean: A high quality, low cost VPS provider. Nginx: Extremely performant reverse proxy used by millions of websites. Express: The default server side middleware framework for NodeJS. PM2: Great process manager for NodeJS applications. Create...