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

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 6 6 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 3 3 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. Check out the corresponding blog post, “Fluent JavaScript – Three Different Kinds Of Prototypal OO”. See also: JavaScript Constructor […]

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. Check out the corresponding blog post, “Fluent JavaScript – Three Different Kinds Of Prototypal OO”. See also: JavaScript Constructor […]

Fluent Conference Schedule

By Eric Elliott On May 27, 2013 JavaScript 0 No Comments Tags: fluent, fluent conference, fluentconf, JavaScript

This week I’ll be speaking at the O’Reilly Fluent Conference. Come say hello, and be sure to catch my talk at 5:05pm Wednesday. Book Signing 3:15pm Wednesday, 05/29/2013 Exhibit Hall “Classical Inheritance is Obsolete: How to Think in Prototypal OO” 5:05pm Wednesday, 05/29/2013 Continental 5 If you’re interested in a deep dive about inheritance, and […]

This week I’ll be speaking at the O’Reilly Fluent Conference. Come say hello, and be sure to catch my talk at 5:05pm Wednesday. Book Signing 3:15pm Wednesday, 05/29/2013 Exhibit Hall “Classical Inheritance is Obsolete: How to Think in Prototypal OO” 5:05pm Wednesday, 05/29/2013 Continental 5 If you’re interested in a deep dive about inheritance, and […]

qconf 0.1.2 Released

By Eric Elliott On May 19, 2013 JavaScript | Node 0 No Comments

qconf on Github Painless configuration for Node apps with defaults file, environment variables, arguments, function parameters. defaults file < process.env < command line arguments < function call override Getting started Install qconf:

$ npm install --save qconf

1	$ npm install --save qconf

Create your config object:

var qconf = require('../qconf.js'),
  config = qconf(); // 99% of the time, this is all you need!

1 2	var qconf = require('../qconf.js'), config = qconf(); // 99% of the time, this is all you need!

Extra credit Create a JSON file: ./config/config.json

{
  "default_setting": true,
  "envOverride": false,
  "arg_override": false,
  "param_override": false
}

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{

"default_setting": true,

"envOverride": false,

"arg_override": false,

"param_override": false

}

Maybe source some environment variables:

export env_override=true

1	export env_override=true

Try a command-line […]

qconf on Github Painless configuration for Node apps with defaults file, environment variables, arguments, function parameters. defaults file < process.env < command line arguments < function call override Getting started Install qconf:

$ npm install --save qconf

1	$ npm install --save qconf

Create your config object:

var qconf = require('../qconf.js'),
  config = qconf(); // 99% of the time, this is all you need!

1 2	var qconf = require('../qconf.js'), config = qconf(); // 99% of the time, this is all you need!

Extra credit Create a JSON file: ./config/config.json

{
  "default_setting": true,
  "envOverride": false,
  "arg_override": false,
  "param_override": false
}

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{

"default_setting": true,

"envOverride": false,

"arg_override": false,

"param_override": false

}

Maybe source some environment variables:

export env_override=true

1	export env_override=true

Try a command-line […]

Stampit 0.3 Released

By Eric Elliott On May 19, 2013 JavaScript | Node 0 No Comments Tags: JavaScript, prototypal oo, prototypes, stampit

Right on the heels of Stampit 0.2, there’s a new release. Stampit 0.3 works with Node, Browserify, AMD, Bower, and a plain old browser global if you’re still using those. Tested with IE8+, Chrome, Firefox, Safari, and Android. Another convenient addition has landed, as well. Now you can do _.extend() style mixins just by passing […]

Right on the heels of Stampit 0.2, there’s a new release. Stampit 0.3 works with Node, Browserify, AMD, Bower, and a plain old browser global if you’re still using those. Tested with IE8+, Chrome, Firefox, Safari, and Android. Another convenient addition has landed, as well. Now you can do _.extend() style mixins just by passing […]

Stampit 0.2 Released

By Eric Elliott On May 16, 2013 Uncategorized 4 4 Comments

Stampit lets you create objects from reusable, composable behaviors. Instead of pretending that JavaScript is class-based, stampit embraces the power and flexibility of prototypes (see “Three Different Kinds of Prototypal OO”). It produces object factories which you can then compose to create more factories. When it’s time to instantiate your objects, just call the function […]

Stampit lets you create objects from reusable, composable behaviors. Instead of pretending that JavaScript is class-based, stampit embraces the power and flexibility of prototypes (see “Three Different Kinds of Prototypal OO”). It produces object factories which you can then compose to create more factories. When it’s time to instantiate your objects, just call the function […]

Getting Started With Node and Express

By Eric Elliott On May 6, 2013 JavaScript | Node 13 13 Comments Tags: express, JavaScript, node

This post is an excerpt from my new book, “Programming JavaScript Applications”. Enjoy! Update – you can watch a recorded O’Reilly webcast presenting this information: “Getting Started With Node and Express”. Node is a server-side JavaScript environment with many attractive features: A fast JavaScript engine (built on V8). Asynchronous by default philosophy (nothing should block). […]

This post is an excerpt from my new book, “Programming JavaScript Applications”. Enjoy! Update – you can watch a recorded O’Reilly webcast presenting this information: “Getting Started With Node and Express”. Node is a server-side JavaScript environment with many attractive features: A fast JavaScript engine (built on V8). Asynchronous by default philosophy (nothing should block). […]

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