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Exploring the Abyss of Null and Undefined in JavaScript
…unusual. Understanding Null and Undefined In JavaScript, null is a literal and language keyword that represents no discernible object value. In other words, it’s an indication of “no value.” While…
A Gentle Introduction to Monads in JavaScript
by …What is meant by Nothing depends on the context. In JavaScript the only things that mean “nothing” are null and undefined. But as you will see, with the Maybe monad,…
Why you should limit JavaScript — and how to do it
by Table XI
…can read your JavaScript pieces if you render the JSON data inside of your HTML document, giving the crawler enough time to parse your content. And you don’t need to…
45 Useful JavaScript Tips, Tricks and Best Practices
by …false ” == false // is true but true == “a” is false ” === false // is false 3 – undefined, null, 0, false, NaN, ” (empty string) are…
The Future of JavaScript…Now!
…usable JavaScript. Each language has its own compiler(s): ECMAScript 6: traceur, ES6 Module Transpiler (for converting ES6 modules to AMD or CommonJS modules) TypeScript: TypeScript Compiler CoffeeScript: CoffeeScript Compiler Each…
JavaScript Architecture for the 23rd Century
by …a goal, try to keep each JavaScript file containing one logical “class” or module. You may have something like this. /js/ /js/app.js /js/starship.js /js/constitutionClass.js /js/starFleet.js This is much nicer. You’re…
Building a JavaScript Library with Grunt.js
…to use Grunt.js to build JavaScript library. Grunt.js requires Node.js and npm to run, so first sections explain what those are, how to install them and how to use them….
Best of JavaScript, HTML & CSS – 2013
…spec for asm.js in great detail. asm.js: closing the gap between JavaScript and native March Pixi.js is a 2D library that works across mobile and desktop devices and you to…
A DOM Manipulation Class in 100 Lines of JavaScript
by …else if(typeof this.el.innerText != ‘undefined‘) { return typeof this.el.innerText; } else { return this.el.innerHTML; } } break; } return set ? api : null; } return api; } I’ve created…
JavaScript Fundamentals
…and mental energy. There are only a few primitives types in JavaScript: String Number (both integer and real) Boolean Undefined Null Everything else is an object (i.e., mutable keyed collections)….