JavaScript Applications, Web Architecture, Node.js « Eric Elliott – JavaScript Architect (A JavaScript Blog)

Static Types are Overrated: Dynamic Duo – Loose Types and Object Extension

By Eric Elliott On Apr 7, 2014 JavaScript | Video 2 2 Comments

Type correctness does not guarantee program correctness, but type annotations are still cool, and there are actually lots of great tools for analysis of JavaScript applications. In this talk, you’ll learn how you can gain a lot more confidence in the correctness of your JavaScript applications, and probably a thing or two about why JavaScript’s […]

Type correctness does not guarantee program correctness, but type annotations are still cool, and there are actually lots of great tools for analysis of JavaScript applications. In this talk, you’ll learn how you can gain a lot more confidence in the correctness of your JavaScript applications, and probably a thing or two about why JavaScript’s […]

Modular JavaScript With npm and Node Modules

Eric Elliott – Modular JavaScript With npm and Node Modules from Eric Elliott on Vimeo. An introductory look at programming with Node style modules. * The principles of modular JavaScript programming * Node style modules * npm * Browserify

Eric Elliott – Modular JavaScript With npm and Node Modules from Eric Elliott on Vimeo. An introductory look at programming with Node style modules. * The principles of modular JavaScript programming * Node style modules * npm * Browserify

Fluent Conference Schedule

By Eric Elliott On Mar 12, 2014 JavaScript 5 5 Comments

Here’s my schedule for Fluent Conference Wed: 3:00 pm Talk – Salon 8 Static Types are Overrated: The Dynamic Duo – Loose Types and Object Extension 4:00 pm Office hours – O’Reilly Booth Table A Come chat with me about JavaScript’s dynamic type system and prototypal OO. 6:00 pm Book signing – Salon 7 Hope […]

Here’s my schedule for Fluent Conference Wed: 3:00 pm Talk – Salon 8 Static Types are Overrated: The Dynamic Duo – Loose Types and Object Extension 4:00 pm Office hours – O’Reilly Booth Table A Come chat with me about JavaScript’s dynamic type system and prototypal OO. 6:00 pm Book signing – Salon 7 Hope […]

Prototypal Inheritance With Stamps

By Eric Elliott On Feb 25, 2014 JavaScript 6 6 Comments Tags: prototypal, prototypal inheritance

Stampit is one year old as of February 10, 2014. I wrote it to demonstrate prototypal inheritance with factories for the book, “Programming JavaScript Applications”. To celebrate its birthday (a little late), here is a free excerpt from the book: JavaScript’s object capabilities are really flexible, but Object.create() isn’t the easiest way to create a […]

Stampit is one year old as of February 10, 2014. I wrote it to demonstrate prototypal inheritance with factories for the book, “Programming JavaScript Applications”. To celebrate its birthday (a little late), here is a free excerpt from the book: JavaScript’s object capabilities are really flexible, but Object.create() isn’t the easiest way to create a […]

Static Types are Overrated: The Dynamic Duo – Loose Types and Object Extension

By Eric Elliott On Feb 24, 2014 JavaScript 2 2 Comments Tags: javascript talk, javascript training

You’ve heard it a million times. People claim that JavaScript isn’t up to the task of building large scale applications because it’s missing static types. In other words, JavaScript doesn’t do any type definition or checking prior to runtime. Instead, types are inferred at runtime, and the type of any variable can change during runtime. […]

You’ve heard it a million times. People claim that JavaScript isn’t up to the task of building large scale applications because it’s missing static types. In other words, JavaScript doesn’t do any type definition or checking prior to runtime. Instead, types are inferred at runtime, and the type of any variable can change during runtime. […]

Announcing Credential v0.2.5 – Easy Password Hashing For Node

By Eric Elliott On Nov 27, 2013 JavaScript | Node 0 No Comments Tags: hash, hashing, JavaScript, node, password, password hashing

Credential is easy password hashing and verification in Node. Protects against brute force, rainbow tables, and timing attacks. Employs cryptographically secure, per password salts to prevent rainbow table attacks. Key stretching is used to make brute force attacks impractical. A constant time verification check prevents variable response time attacks. The latest version won’t throw if […]

Credential is easy password hashing and verification in Node. Protects against brute force, rainbow tables, and timing attacks. Employs cryptographically secure, per password salts to prevent rainbow table attacks. Key stretching is used to make brute force attacks impractical. A constant time verification check prevents variable response time attacks. The latest version won’t throw if […]

Everything’s Gone JavaScript

By Eric Elliott On Nov 10, 2013 JavaScript 0 No Comments

“Everything that can be written in JavaScript will eventually be written in JavaScript”. – Atwood’s law JavaScript is now an integral part of several operating systems: Windows 8 Firefox OS Gnome (Linux) Chrome OS (Chromebooks) Tons of mobile apps are either just HTML web views, or use a lot of web views, so a lot […]

“Everything that can be written in JavaScript will eventually be written in JavaScript”. – Atwood’s law JavaScript is now an integral part of several operating systems: Windows 8 Firefox OS Gnome (Linux) Chrome OS (Chromebooks) Tons of mobile apps are either just HTML web views, or use a lot of web views, so a lot […]

JavaScript String .contains()

By Eric Elliott On Oct 17, 2013 JavaScript 2 2 Comments Tags: array, array contains, contains, ecmascript 6, javascript string

String.prototype.contains() is a simple way of checking to see if a string contains another string. It’s one of the String extras in the upcoming ECMAScript 6 specification. Lucky for us, it’s easily polyfilled, and unlikely to change, so you can start using it right now. Here’s the basic usage:

String.prototype.contains(searchString, startIndex);

1	String.prototype.contains(searchString, startIndex);

'beep'.contains('ee'); // true

1	'beep'.contains('ee'); // true

Optionally, you can specify […]

String.prototype.contains() is a simple way of checking to see if a string contains another string. It’s one of the String extras in the upcoming ECMAScript 6 specification. Lucky for us, it’s easily polyfilled, and unlikely to change, so you can start using it right now. Here’s the basic usage:

String.prototype.contains(searchString, startIndex);

1	String.prototype.contains(searchString, startIndex);

'beep'.contains('ee'); // true

1	'beep'.contains('ee'); // true

Optionally, you can specify […]

JavaScript String sprintf

By Eric Elliott On Oct 17, 2013 JavaScript 1 1 Comment Tags: JavaScript, javascript string

A quick and easy function for sprintf-style JavaScript string replacement:

function format(str) {
  var args = arguments;
  return str.replace(/%(\d+)/g,
      function(match, i) {
    return args[i];
  });
}

format('Name: %1\nEmail: %2', 'Eric', 'eric@example.com');
// Name: Eric
// Email: eric@example.com

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function format(str) {

var args = arguments;

return str.replace(/%(\d+)/g,

function(match, i) {

return args[i];

});

}

format('Name: %1\nEmail: %2', 'Eric', '[email protected]');

// Name: Eric

// Email: [email protected]

Edit: thanks imma!

A quick and easy function for sprintf-style JavaScript string replacement:

function format(str) {
  var args = arguments;
  return str.replace(/%(\d+)/g,
      function(match, i) {
    return args[i];
  });
}

format('Name: %1\nEmail: %2', 'Eric', 'eric@example.com');
// Name: Eric
// Email: eric@example.com

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function format(str) {

var args = arguments;

return str.replace(/%(\d+)/g,

function(match, i) {

return args[i];

});

}

format('Name: %1\nEmail: %2', 'Eric', '[email protected]');

// Name: Eric

// Email: [email protected]

Edit: thanks imma!

Configuring Ghost / Node.js for Lightning Performance

By Eric Elliott On Oct 15, 2013 HTML5 | JavaScript | Node 11 11 Comments

Ghost is a brand new blogging platform written on Node.js. For all you JavaScript people, you know what that means. It’s open source, and it’s on Github, but before you go running off to gawk at the source, here’s how to install it for optimal performance. Don’t worry, it only takes a few minutes: Set […]

Ghost is a brand new blogging platform written on Node.js. For all you JavaScript people, you know what that means. It’s open source, and it’s on Github, but before you go running off to gawk at the source, here’s how to install it for optimal performance. Don’t worry, it only takes a few minutes: Set […]

Getting Started With Node and Express – Free O’Reilly Webcast

By Eric Elliott On Sep 11, 2013 JavaScript | Node 5 5 Comments Tags: express, JavaScript, node.js

This webcast was originally broadcasted on September 17, 2013, but it was recorded, and is still available. It covers the Node / Express introduction from my book, “Programming JavaScript Applications”. Click the big graphic above, fill out the form, and enjoy the recorded talk. Also see the excerpt blog post: “Getting Started with Node and […]

This webcast was originally broadcasted on September 17, 2013, but it was recorded, and is still available. It covers the Node / Express introduction from my book, “Programming JavaScript Applications”. Click the big graphic above, fill out the form, and enjoy the recorded talk. Also see the excerpt blog post: “Getting Started with Node and […]

Authentication – from “Programming JavaScript Applications”

By Eric Elliott On Aug 4, 2013 JavaScript | Node | Web Architecture 7 7 Comments Tags: authentication, JavaScript, multi-factor auth, node.js, passwords

I have read a lot of books about how to build applications, but I’ve never seen one that adequately covers the topic of authentication, so I decided to dedicate a section to it in my book, Programming JavaScript Applications. Enjoy this free excerpt. Authentication Authentication is the mechanism which confirms the identity of users trying […]

I have read a lot of books about how to build applications, but I’ve never seen one that adequately covers the topic of authentication, so I decided to dedicate a section to it in my book, Programming JavaScript Applications. Enjoy this free excerpt. Authentication Authentication is the mechanism which confirms the identity of users trying […]

Announcing version-healthcheck for Node.js

By Eric Elliott On Aug 2, 2013 JavaScript | Node 0 No Comments Tags: express, JavaScript, node, node.js

version-healthcheck A plug-and-play /version route for the Node.js Express framework. Useful for monitoring the health status of your application deploys. It will deliver a JSON payload something like this:

{
  "name": "my-app"
  "version": "0.0.1"
  "build": "4f26147"
}

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{

"name": "my-app"

"version": "0.0.1"

"build": "4f26147"

}

name: app name from package.json version: app version from package.json build: latest build # read from a generated file: APP_HOME/config/BUILD I recommend using the included build script to […]

version-healthcheck A plug-and-play /version route for the Node.js Express framework. Useful for monitoring the health status of your application deploys. It will deliver a JSON payload something like this:

{
  "name": "my-app"
  "version": "0.0.1"
  "build": "4f26147"
}

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{

"name": "my-app"

"version": "0.0.1"

"build": "4f26147"

}

name: app name from package.json version: app version from package.json build: latest build # read from a generated file: APP_HOME/config/BUILD I recommend using the included build script to […]

qconf 0.2 released

By Eric Elliott On Jul 31, 2013 JavaScript | Node 0 No Comments

qconf is painless configuration for Node apps with defaults file, environment variables, arguments, function parameters. defaults file < process.env < command line arguments < function call override Install qconf and kick the tires:

$ npm install --save qconf

1	$ npm install --save qconf

New in 0.2: The config object is now an event emitter, so you can easily log when a value is undefined, […]

qconf is painless configuration for Node apps with defaults file, environment variables, arguments, function parameters. defaults file < process.env < command line arguments < function call override Install qconf and kick the tires:

$ npm install --save qconf

1	$ npm install --save qconf

New in 0.2: The config object is now an event emitter, so you can easily log when a value is undefined, […]

Classical Inheritance is Obsolete – How to Think in Prototypal OO

By Eric Elliott On Jun 28, 2013 JavaScript 6 6 Comments Tags: class inheritance, classical inheritance, classical oo, inheritance, JavaScript, objects, prototypal, prototypal inheritance, prototypal oo

That’s right. I said it. To a packed room at the O’Reilly Fluent Conference: JavaScript and Beyond, 2013. And I’ll say it again: Classical inheritance is obsolete. Classes are dead. They just don’t know it, yet. You can browse the slides. Check out the corresponding blog post, “Fluent JavaScript – Three Different Kinds Of Prototypal […]

That’s right. I said it. To a packed room at the O’Reilly Fluent Conference: JavaScript and Beyond, 2013. And I’ll say it again: Classical inheritance is obsolete. Classes are dead. They just don’t know it, yet. You can browse the slides. Check out the corresponding blog post, “Fluent JavaScript – Three Different Kinds Of Prototypal […]

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