jquery formatCurrency货币格式化处理
jquery formatCurrency是一个对货币格式进行格式化输入控制、显示的一个jquery插件,可以对文本框输入进行货币合法性验证,并且支持对文本输入字符串进行格式化显示。(国内的会计记账法是保留两位小数,整数位每3个千位使用,号隔开)
1.引入jquery和插件(jquery省略)
<script src="jquery.formatCurrency-1.4.0.js" type="text/javascript" ></script>
2.使用插件API方法
// 如将页面所有表格的金额单元格格式化显示 $('.label').formatCurrency(); // $('.ageInput').toNumber();
如图
插件详细代码
// This file is part of the jQuery formatCurrency Plugin. // // The jQuery formatCurrency Plugin is free software: you can redistribute it // and/or modify it under the terms of the GNU General Public License as published // by the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // The jQuery formatCurrency Plugin is distributed in the hope that it will // be useful, but WITHOUT ANY WARRANTY; without even the implied warranty // of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License along with // the jQuery formatCurrency Plugin. If not, see <http://www.gnu.org/licenses/>. // wiki http://code.google.com/p/jquery-formatcurrency/wiki/Usage (function($) { $.formatCurrency = {}; $.formatCurrency.regions = []; // default Region is en $.formatCurrency.regions[''] = { symbol: '', positiveFormat: '%s%n', negativeFormat: '(%s%n)', decimalSymbol: '.', digitGroupSymbol: ',', groupDigits: true }; $.fn.formatCurrency = function(destination, settings) { if (arguments.length == 1 && typeof destination !== "string") { settings = destination; destination = false; } // initialize defaults var defaults = { name: "formatCurrency", colorize: false, region: '', global: true, 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; ... eventOnDecimalsEntered: false }; // initialize default region defaults = $.extend(defaults, $.formatCurrency.regions['']); // override defaults with settings passed in settings = $.extend(defaults, settings); // check for region setting if (settings.region.length > 0) { settings = $.extend(settings, getRegionOrCulture(settings.region)); } settings.regex = generateRegex(settings); return this.each(function() { $this = $(this); // get number var num = '0'; num = $this[$this.is('input, select, textarea') ? 'val' : 'html'](); //identify '(123)' as a negative number if (num.search('\\(') >= 0) { num = '-' + num; } if (num === '' || (num === '-' && settings.roundToDecimalPlace === -1)) { return; } // if the number is valid use it, otherwise clean it if (isNaN(num)) { // clean number num = num.replace(settings.regex, ''); if (num === '' || (num === '-' && settings.roundToDecimalPlace === -1)) { return; } if (settings.decimalSymbol != '.') { num = num.replace(settings.decimalSymbol, '.'); // reset to US decimal for arithmetic } if (isNaN(num)) { num = '0'; } } // evalutate number input var numParts = String(num).split('.'); var isPositive = (num == Math.abs(num)); var hasDecimals = (numParts.length > 1); var decimals = (hasDecimals ? numParts[1].toString() : '0'); var originalDecimals = decimals; // format number num = Math.abs(numParts[0]); num = isNaN(num) ? 0 : num; if (settings.roundToDecimalPlace >= 0) { decimals = parseFloat('1.' + decimals); // prepend "0."; (IE does NOT round 0.50.toFixed(0) up, but (1+0.50).toFixed(0)-1 decimals = decimals.toFixed(settings.roundToDecimalPlace); // round if (decimals.substring(0, 1) == '2') { num = Number(num) + 1; } decimals = decimals.substring(2); // remove "0." } num = String(num); if (settings.groupDigits) { for (var i = 0; i < Math.floor((num.length - (1 + i)) / 3); i++) { num = num.substring(0, num.length - (4 * i + 3)) + settings.digitGroupSymbol + num.substring(num.length - (4 * i + 3)); } } if ((hasDecimals && settings.roundToDecimalPlace == -1) || settings.roundToDecimalPlace > 0) { num += settings.decimalSymbol + decimals; } // format symbol/negative var format = isPositive ? settings.positiveFormat : settings.negativeFormat; var money = format.replace(/%s/g, settings.symbol); money = money.replace(/%n/g, num); // setup destination var $destination = $([]); if (!destination) { $destination = $this; } else { $destination = $(destination); } // set destination $destination[$destination.is('input, select, textarea') ? 'val' : 'html'](money); if ( hasDecimals && settings.eventOnDecimalsEntered && originalDecimals.length > settings.roundToDecimalPlace ) { $destination.trigger('decimalsEntered', originalDecimals); } // colorize if (settings.colorize) { $destination.css('color', isPositive ? 'black' : 'red'); } }); }; // Remove all non numbers from text $.fn.toNumber = function(settings) { var defaults = $.extend({ name: "toNumber", region: '', global: true }, $.formatCurrency.regions['']); settings = jQuery.extend(defaults, settings); if (settings.region.length > 0) { settings = $.extend(settings, getRegionOrCulture(settings.region)); } settings.regex = generateRegex(settings); return this.each(function() { var method = $(this).is('input, select, textarea') ? 'val' : 'html'; $(this)[method]($(this)[method]().replace('(', '(-').replace(settings.regex, '')); }); }; // returns the value from the first element as a number $.fn.asNumber = function(settings) { var defaults = $.extend({ name: "asNumber", region: '', parse: true, parseType: 'Float', global: true }, $.formatCurrency.regions['']); settings = jQuery.extend(defaults, settings); if (settings.region.length > 0) { settings = $.extend(settings, getRegionOrCulture(settings.region)); } settings.regex = generateRegex(settings); settings.parseType = validateParseType(settings.parseType); var method = $(this).is('input, select, textarea') ? 'val' : 'html'; var num = $(this)[method](); num = num ? num : ""; num = num.replace('(', '(-'); num = num.replace(settings.regex, ''); if (!settings.parse) { return num; } if (num.length == 0) { num = '0'; } if (settings.decimalSymbol != '.') { num = num.replace(settings.decimalSymbol, '.'); // reset to US decimal for arthmetic } return window['parse' + settings.parseType](num); }; function getRegionOrCulture(region) { var regionInfo = $.formatCurrency.regions[region]; if (regionInfo) { return regionInfo; } else { if (/(\w+)-(\w+)/g.test(region)) { var culture = region.replace(/(\w+)-(\w+)/g, "$1"); return $.formatCurrency.regions[culture]; } } // fallback to extend(null) (i.e. nothing) return null; } function validateParseType(parseType) { switch (parseType.toLowerCase()) { case 'int': return 'Int'; case 'float': return 'Float'; default: throw 'invalid parseType'; } } function generateRegex(settings) { if (settings.symbol === '') { return new RegExp("[^\\d" + settings.decimalSymbol + "-]", "g"); } else { var symbol = settings.symbol.replace('$', '\\$').replace('.', '\\.'); return new RegExp(symbol + "|[^\\d" + settings.decimalSymbol + "-]", "g"); } } })(jQuery);