Utility functions for linking into native messaging applications (currently SMS and WhatsApp) without prepoluating a phone number.

plinks.js

/**
 * Utility functions for linking into native messaging applications (currently SMS and WhatsApp) without prepoluating a phone number.
 *
 * Plinks is based on this blog post I wrote earlier this year:
 * http://blog.julianklotz.de/2015/03/14/the-sms-uri-scheme/
 * 
 * MIT license.
 */

window.plinks = (function() {
	'use strict';

	var exports = {};

	var isIosDevice = (function() {
		var ua = navigator.userAgent.toLowerCase();
		if (ua.indexOf("iphone") > -1 || ua.indexOf("ipad") > -1) {
			return true;
		} else {
			return false;
		}
	})();

	/**
	 * Call plinks.smsLink('myMessage') to get a proper SMS link href
	 * The phone number cannot be pre-populated.
	 */
	exports.smsLink = function(message) {
		var msg = encodeURIComponent(message), href;

		// No more support for iOS 6 + 7
		if(isIosDevice) {
			href = "sms:&body=" + msg;
		} else {
			href = "sms:?body=" + msg;
		}

		return href
	};

	exports.whatsAppLink = function(message) {
		var msg = encodeURIComponent(message), href;
		href = "whatsapp://send?text=" + msg;

		return href
	}

	return exports
}).call(this);

Fantastic. Is this up to date?