matt.js

Simple string formatter based on the sprintf implementation.

Motivation

I've always been a huge fan of sprintf since the old ActionScript days (I even wrote an AS3 implementation of it). I really like its simplicity. Even the native console object has basic support for it. I just wanted a way to mix console's formatting support with named arguments.

Environment support

Works well with AMD, Node.js and the browser.

Install

For Node.js via NPM

$ npm install matt.js --save

For the browser via Bower

$ bower install matt.js --save

Usage

Basic substitution

var message = 'Hello %s! \
You\'re our visitor number %d! \
That means you just won %f pounds of Nutella!';

console.log(matt(message, 'John', 1000, 780.35));
// Hello John! You're our visitor number 1000! That means you just won 780.35 pounds of Nutella!

Named arguments

var message = 'Hello user! This is %(name)s %(surname)s. Check %(website)s for more info.',
    data = {
      name: 'John',
      surname: 'Doe',
      website: 'http://johndoe.com'
  };

console.log(matt(message, data));
// "Hello user! This is John Doe. Check http://johndoe.com for more info."

rmtsukuru/matt.js