fast-format

fast-format

This is a simplified version of Node.js util.format(). This supports only %s placeholder, but faster than that. This will be the best solution if you need speed rather than complex formatting.

Usage

Same as Node.js util.format().

format(formatString[, ...])

Example

var s = format('%s, %s!', 'Hello', 'world');
console.log(s);     // => 'Hello, world!'

Benchmark

var i, len, s = Date.now();
for (i = 0, len = 10000000; i < len; i++) {
    format('i = %s, len = %s', i, len);
}
console.log(Date.now() - s);

environment1: MacBook Air Early 2015 + Node.js v0.12.5

module	time
fast-format	2,072 msec
util.format	11,571 msec
sprintf-js	19,438 msec

---

environment2: Core i7 2.5GHz Windows 8.1 Pro + Internet Explorer 11

module	time
fast-format	25,302 msec
util.format	40,550 msec
sprintf-js	58,133 msec

sprintf-js is a JavaScript sprintf implementation for the browser and Node.js. It is slow but might not be inevitable because a high functional module.

Installation

via npm

npm install fast-format --save

via bower

bower install fast-format

Browser Support

Chrome, Firefox, Safari, Opera, and Internet Explorer 6+

License

MIT