https://www.comercialpaperera.com/js/jquery.formatCurrency.js

1//  This file is part of the jQuery formatCurrency Plugin.
2//
3//    The jQuery formatCurrency Plugin is free software: you can redistribute it
4//    and/or modify it under the terms of the GNU General Public License as published 
5//    by the Free Software Foundation, either version 3 of the License, or
6//    (at your option) any later version.
7
8//    The jQuery formatCurrency Plugin is distributed in the hope that it will
9//    be useful, but WITHOUT ANY WARRANTY; without even the implied warranty 
10//    of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11//    GNU General Public License for more details.
12//
13//    You should have received a copy of the GNU General Public License along with 
14//    the jQuery formatCurrency Plugin.  If not, see <http://www.gnu.org/licenses/>.
15
16(function($) {
17
18	$.formatCurrency = {};
19
20	$.formatCurrency.regions = [];
21
22	// default Region is en
23	$.formatCurrency.regions[''] = {
24		symbol: '$',
25		positiveFormat: '%s%n',
26		negativeFormat: '(%s%n)',
27		decimalSymbol: '.',
28		digitGroupSymbol: ',',
29		groupDigits: true
30	};
31
32	$.fn.formatCurrency = function(destination, settings) {
33
34		if (arguments.length == 1 && typeof destination !== "string") {
35			settings = destination;
36			destination = false;
37		}
38
39		// initialize defaults
40		var defaults = {
41			name: "formatCurrency",
42			colorize: false,
43			region: '',
44			global: true,
45			roundToDecimalPlace: 2, // roundToDecimalPlace: -1; for no rounding; 0 to round to the dollar; 1 for one digit cents; 2 for two digit cents; 3 for three digit cents; ...
46			eventOnDecimalsEntered: false
47		};
48		// initialize default region
49		defaults = $.extend(defaults, $.formatCurrency.regions['']);
50		// override defaults with settings passed in
51		settings = $.extend(defaults, settings);
52
53		// check for region setting
54		if (settings.region.length > 0) {
55			settings = $.extend(settings, getRegionOrCulture(settings.region));
56		}
57		settings.regex = generateRegex(settings);
58
59		return this.each(function() {
60			$this = $(this);
61
62			// get number
63			var num = '0';
64			num = $this[$this.is('input, select, textarea') ? 'val' : 'html']();
65
66			//identify '(123)' as a negative number
67			if (num.search('\\(') >= 0) {
68				num = '-' + num;
69			}
70
71			if (num === '' || (num === '-' && settings.roundToDecimalPlace === -1)) {
72				return;
73			}
74
75			// if the number is valid use it, otherwise clean it
76			if (isNaN(num)) {
77				// clean number
78				num = num.replace(settings.regex, '');
79				
80				if (num === '' || (num === '-' && settings.roundToDecimalPlace === -1)) {
81					return;
82				}
83				
84				if (settings.decimalSymbol != '.') {
85					num = num.replace(settings.decimalSymbol, '.');  // reset to US decimal for arithmetic
86				}
87				if (isNaN(num)) {
88					num = '0';
89				}
90			}
91			
92			// evalutate number input
93			var numParts = String(num).split('.');
94			var isPositive = (num == Math.abs(num));
95			var hasDecimals = (numParts.length > 1);
96			var decimals = (hasDecimals ? numParts[1].toString() : '0');
97			var originalDecimals = decimals;
98			
99			// format number
100			num = Math.abs(numParts[0]);
101			num = isNaN(num) ? 0 : num;
102			if (settings.roundToDecimalPlace >= 0) {
103				decimals = parseFloat('1.' + decimals); // prepend "0."; (IE does NOT round 0.50.toFixed(0) up, but (1+0.50).toFixed(0)-1
104				decimals = decimals.toFixed(settings.roundToDecimalPlace); // round
105				if (decimals.substring(0, 1) == '2') {
106					num = Number(num) + 1;
107				}
108				decimals = decimals.substring(2); // remove "0."
109			}
110			num = String(num);
111
112			if (settings.groupDigits) {
113				for (var i = 0; i < Math.floor((num.length - (1 + i)) / 3); i++) {
114					num = num.substring(0, num.length - (4 * i + 3)) + settings.digitGroupSymbol + num.substring(num.length - (4 * i + 3));
115				}
116			}
117
118			if ((hasDecimals && settings.roundToDecimalPlace == -1) || settings.roundToDecimalPlace > 0) {
119				num += settings.decimalSymbol + decimals;
120			}
121
122			// format symbol/negative
123			var format = isPositive ? settings.positiveFormat : settings.negativeFormat;
124			var money = format.replace(/%s/g, settings.symbol);
125			money = money.replace(/%n/g, num);
126

127			// setup destination
128			var $destination = $([]);
129			if (!destination) {
130				$destination = $this;
131			} else {
132				$destination = $(destination);
133			}
134			// set destination
135			$destination[$destination.is('input, select, textarea') ? 'val' : 'html'](money);
136
137			if (
138				hasDecimals && 
139				settings.eventOnDecimalsEntered && 
140				originalDecimals.length > settings.roundToDecimalPlace
141			) {
142				$destination.trigger('decimalsEntered', originalDecimals);
143			}
144
145			// colorize
146			if (settings.colorize) {
147				$destination.css('color', isPositive ? 'black' : 'red');
148			}
149		});
150	};
151
152	// Remove all non numbers from text
153	$.fn.toNumber = function(settings) {
154		var defaults = $.extend({
155			name: "toNumber",
156			region: '',
157			global: true
158		}, $.formatCurrency.regions['']);
159
160		settings = jQuery.extend(defaults, settings);
161		if (settings.region.length > 0) {
162			settings = $.extend(settings, getRegionOrCulture(settings.region));
163		}
164		settings.regex = generateRegex(settings);
165
166		return this.each(function() {
167			var method = $(this).is('input, select, textarea') ? 'val' : 'html';
168			$(this)[method]($(this)[method]().replace('(', '(-').replace(settings.regex, ''));
169		});
170	};
171
172	// returns the value from the first element as a number
173	$.fn.asNumber = function(settings) {
174		var defaults = $.extend({
175			name: "asNumber",
176			region: '',
177			parse: true,
178			parseType: 'Float',
179			global: true
180		}, $.formatCurrency.regions['']);
181		settings = jQuery.extend(defaults, settings);
182		if (settings.region.length > 0) {
183			settings = $.extend(settings, getRegionOrCulture(settings.region));
184		}
185		settings.regex = generateRegex(settings);
186		settings.parseType = validateParseType(settings.parseType);
187
188		var method = $(this).is('input, select, textarea') ? 'val' : 'html';
189		var num = $(this)[method]();
190		num = num ? num : "";
191		num = num.replace('(', '(-');
192		num = num.replace(settings.regex, '');
193		if (!settings.parse) {
194			return num;
195		}
196
197		if (num.length == 0) {
198			num = '0';
199		}
200
201		if (settings.decimalSymbol != '.') {
202			num = num.replace(settings.decimalSymbol, '.');  // reset to US decimal for arthmetic
203		}
204
205		return window['parse' + settings.parseType](num);
206	};
207
208	function getRegionOrCulture(region) {
209		var regionInfo = $.formatCurrency.regions[region];
210		if (regionInfo) {
211			return regionInfo;
212		}
213		else {
214			if (/(\w+)-(\w+)/g.test(region)) {
215				var culture = region.replace(/(\w+)-(\w+)/g, "$1");
216				return $.formatCurrency.regions[culture];
217			}
218		}
219		// fallback to extend(null) (i.e. nothing)
220		return null;
221	}
222
223	function validateParseType(parseType) {
224		switch (parseType.toLowerCase()) {
225			case 'int':
226				return 'Int';
227			case 'float':
228				return 'Float';
229			default:
230				throw 'invalid parseType';
231		}
232	}
233	
234	function generateRegex(settings) {
235		if (settings.symbol === '') {
236			return new RegExp("[^\\d" + settings.decimalSymbol + "-]", "g");
237		}
238		else {
239			var symbol = settings.symbol.replace('$', '\\$').replace('.', '\\.');		
240			return new RegExp(symbol + "|[^\\d" + settings.decimalSymbol + "-]", "g");
241		}	
242	}
243
244})(jQuery);