简介
accounting.js 是一个非常小的JavaScript方法库用于对数字，金额和货币进行格式化。并提供可选的Excel风格列渲染。它没有依赖任何JS框架。货币符号等可以按需求进行定制。
代码内容及下载地址
accounting.js代码如下：
/*! * accounting.js v0.3.2 * Copyright 2011, Joss Crowcroft * * Freely distributable under the MIT license. * Portions of accounting.js are inspired or borrowed from underscore.js * * Full details and documentation: * http://josscrowcroft.github.com/accounting.js/ */ (function(root, undefined) { /* --- Setup --- */ // Create the local library object, to be exported or referenced globally later var lib = {}; // Current version lib.version = '0.3.2'; /* --- Exposed settings --- */ // The library's settings configuration object. Contains default parameters for // currency and number formatting lib.settings = { currency: { symbol : "$", // default currency symbol is '$' format : "%s%v", // controls output: %s = symbol, %v = value (can be object, see docs) decimal : ".", // decimal point separator thousand : ",", // thousands separator precision : 2, // decimal places grouping : 3 // digit grouping (not implemented yet) }, number: { precision : 0, // default precision on numbers is 0 grouping : 3, // digit grouping (not implemented yet) thousand : ",", decimal : "." } }; /* --- Internal Helper Methods --- */ // Store reference to possibly-available ECMAScript 5 methods for later var nativeMap = Array.prototype.map, nativeIsArray = Array.isArray, toString = Object.prototype.toString; /** * Tests whether supplied parameter is a string * from underscore.js */ function isString(obj) { return !!(obj === '' || (obj && obj.charCodeAt && obj.substr)); } /** * Tests whether supplied parameter is a string * from underscore.js, delegates to ECMA5's native Array.isArray */ function isArray(obj) { return nativeIsArray ? nativeIsArray(obj) : toString.call(obj) === '[object Array]'; } /** * Tests whether supplied parameter is a true object */ function isObject(obj) { return obj && toString.call(obj) === '[object Object]'; } /** * Extends an object with a defaults object, similar to underscore's _.defaults * * Used for abstracting parameter handling from API methods */ function defaults(object, defs) { var key; object = object || {}; defs = defs || {}; // Iterate over object non-prototype properties: for (key in defs) { if (defs.hasOwnProperty(key)) { // Replace values with defaults only if undefined (allow empty/zero values): if (object[key] == null) object[key] = defs[key]; } } return object; } /** * Implementation of `Array.map()` for iteration loops * * Returns a new Array as a result of calling `iterator` on each array value. * Defers to native Array.map if available */ function map(obj, iterator, context) { var results = [], i, j; if (!obj) return results; // Use native .map method if it exists: if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context); // Fallback for native .map: for (i = 0, j = obj.length; i < j; i++ ) { results[i] = iterator.call(context, obj[i], i, obj); } return results; } /** * Check and normalise the value of precision (must be positive integer) */ function checkPrecision(val, base) { val = Math.round(Math.abs(val)); return isNaN(val)? base : val; } /** * Parses a format string or object and returns format obj for use in rendering * * `format` is either a string with the default (positive) format, or object * containing `pos` (required), `neg` and `zero` values (or a function returning * either a string or object) * * Either string or format.pos must contain "%v" (value) to be valid */ function checkCurrencyFormat(format) { var defaults = lib.settings.currency.format; // Allow function as format parameter (should return string or object): if ( typeof format === "function" ) format = format(); // Format can be a string, in which case `value` ("%v") must be present: if ( isString( format ) && format.match("%v") ) { // Create and return positive, negative and zero formats: return { pos : format, neg : format.replace("-", "").replace("%v", "-%v"), zero : format }; // If no format, or object is missing valid positive value, use defaults: } else if ( !format || !format.pos || !format.pos.match("%v") ) { // If defaults is a string, casts it to an object for faster checking next time: return ( !isString( defaults ) ) ? defaults : lib.settings.currency.format = { pos : defaults, neg : defaults.replace("%v", "-%v"), zero : defaults }; } // Otherwise, assume format was fine: return format; } /* --- API Methods --- */ /** * Takes a string/array of strings, removes all formatting/cruft and returns the raw float value * alias: accounting.`parse(string)` * * Decimal must be included in the regular expression to match floats (defaults to * accounting.settings.number.decimal), so if the number uses a non-standard decimal * separator, provide it as the second argument. * * Also matches bracketed negatives (eg. "$ (1.99)" => -1.99) * * Doesn't throw any errors (`NaN`s become 0) but this may change in future */ var unformat = lib.unformat = lib.parse = function(value, decimal) { // Recursively unformat arrays: if (isArray(value)) { return map(value, function(val) { return unformat(val, decimal); }); } // Fails silently (need decent errors): value = value || 0; // Return the value as-is if it's already a number: if (typeof value === "number") return value; // Default decimal point comes from settings, but could be set to eg. "," in opts: decimal = decimal || lib.settings.number.decimal; // Build regex to strip out everything except digits, decimal point and minus sign: var regex = new RegExp("[^0-9-" + decimal + "]", ["g"]), unformatted = parseFloat( ("" + value) .replace(/((.*))/, "-$1") // replace bracketed values with negatives .replace(regex, '') // strip out any cruft .replace(decimal, '.') // make sure decimal point is standard ); // This will fail silently which may cause trouble, let's wait and see: return !isNaN(unformatted) ? unformatted : 0; }; /** * Implementation of toFixed() that treats floats more like decimals * * Fixes binary rounding issues (eg. (0.615).toFixed(2) === "0.61") that present * problems for accounting- and finance-related software. */ var toFixed = lib.toFixed = function(value, precision) { precision = checkPrecision(precision, lib.settings.number.precision); var power = Math.pow(10, precision); // Multiply up by precision, round accurately, then divide and use native toFixed(): return (Math.round(lib.unformat(value) * power) / power).toFixed(precision); }; /** * Format a number, with comma-separated thousands and custom precision/decimal places * * Localise by overriding the precision and thousand / decimal separators * 2nd parameter `precision` can be an object matching `settings.number` */ var formatNumber = lib.formatNumber = function(number, precision, thousand, decimal) { // Resursively format arrays: if (isArray(number)) { return map(number, function(val) { return formatNumber(val, precision, thousand, decimal); }); } // Clean up number: number = unformat(number); // Build options object from second param (if object) or all params, extending defaults: var opts = defaults( (isObject(precision) ? precision : { precision : precision, thousand : thousand, decimal : decimal }), lib.settings.number ), // Clean up precision usePrecision = checkPrecision(opts.precision), // Do some calc: negative = number < 0 ? "-" : "", base = parseInt(toFixed(Math.abs(number || 0), usePrecision), 10) + "", mod = base.length > 3 ? base.length % 3 : 0; // Format the number: return negative + (mod ? base.substr(0, mod) + opts.thousand : "") + base.substr(mod).replace(/(d{3})(?=d)/g, "$1" + opts.thousand) + (usePrecision ? opts.decimal + toFixed(Math.abs(number), usePrecision).split('.')[1] : ""); }; /** * Format a number into currency * * Usage: accounting.formatMoney(number, symbol, precision, thousandsSep, decimalSep, format) * defaults: (0, "$", 2, ",", ".", "%s%v") * * Localise by overriding the symbol, precision, thousand / decimal separators and format * Second param can be an object matching `settings.currency` which is the easiest way. * * To do: tidy up the parameters */ var formatMoney = lib.formatMoney = function(number, symbol, precision, thousand, decimal, format) { // Resursively format arrays: if (isArray(number)) { return map(number, function(val){ return formatMoney(val, symbol, precision, thousand, decimal, format); }); } // Clean up number: number = unformat(number); // Build options object from second param (if object) or all params, extending defaults: var opts = defaults( (isObject(symbol) ? symbol : { symbol : symbol, precision : precision, thousand : thousand, decimal : decimal, format : format }), lib.settings.currency ), // Check format (returns object with pos, neg and zero): formats = checkCurrencyFormat(opts.format), // Choose which format to use for this value: useFormat = number > 0 ? formats.pos : number < 0 ? formats.neg : formats.zero; // Return with currency symbol added: return useFormat.replace('%s', opts.symbol).replace('%v', formatNumber(Math.abs(number), checkPrecision(opts.precision), opts.thousand, opts.decimal)); }; /** * Format a list of numbers into an accounting column, padding with whitespace * to line up currency symbols, thousand separators and decimals places * * List should be an array of numbers * Second parameter can be an object containing keys that match the params * * Returns array of accouting-formatted number strings of same length * * NB: `white-space:pre` CSS rule is required on the list container to prevent * browsers from collapsing the whitespace in the output strings. */ lib.formatColumn = function(list, symbol, precision, thousand, decimal, format) { if (!list) return []; // Build options object from second param (if object) or all params, extending defaults: var opts = defaults( (isObject(symbol) ? symbol : { symbol : symbol, precision : precision, thousand : thousand, decimal : decimal, format : format }), lib.settings.currency ), // Check format (returns object with pos, neg and zero), only need pos for now: formats = checkCurrencyFormat(opts.format), // Whether to pad at start of string or after currency symbol: padAfterSymbol = formats.pos.indexOf("%s") < formats.pos.indexOf("%v") ? true : false, // Store value for the length of the longest string in the column: maxLength = 0, // Format the list according to options, store the length of the longest string: formatted = map(list, function(val, i) { if (isArray(val)) { // Recursively format columns if list is a multi-dimensional array: return lib.formatColumn(val, opts); } else { // Clean up the value val = unformat(val); // Choose which format to use for this value (pos, neg or zero): var useFormat = val > 0 ? formats.pos : val < 0 ? formats.neg : formats.zero, // Format this value, push into formatted list and save the length: fVal = useFormat.replace('%s', opts.symbol).replace('%v', formatNumber(Math.abs(val), checkPrecision(opts.precision), opts.thousand, opts.decimal)); if (fVal.length > maxLength) maxLength = fVal.length; return fVal; } }); // Pad each number in the list and send back the column of numbers: return map(formatted, function(val, i) { // Only if this is a string (not a nested array, which would have already been padded): if (isString(val) && val.length < maxLength) { // Depending on symbol position, pad after symbol or at index 0: return padAfterSymbol ? val.replace(opts.symbol, opts.symbol+(new Array(maxLength - val.length + 1).join(" "))) : (new Array(maxLength - val.length + 1).join(" ")) + val; } return val; }); }; /* --- Module Definition --- */ // Export accounting for CommonJS. If being loaded as an AMD module, define it as such. // Otherwise, just add `accounting` to the global object if (typeof exports !== 'undefined') { if (typeof module !== 'undefined' && module.exports) { exports = module.exports = lib; } exports.accounting = lib; } else if (typeof define === 'function' && define.amd) { // Return the library as an AMD module: define([], function() { return lib; }); } else { // Use accounting.noConflict to restore `accounting` back to its original value. // Returns a reference to the library's `accounting` object; // e.g. `var numbers = accounting.noConflict();` lib.noConflict = (function(oldAccounting) { return function() { // Reset the value of the root's `accounting` variable: root.accounting = oldAccounting; // Delete the noConflict method: lib.noConflict = undefined; // Return reference to the library to re-assign it: return lib; }; })(root.accounting); // Declare `fx` on the root (global/window) object: root['accounting'] = lib; } // Root will be `window` in browser or `global` on the server: }(this));
官方下载地址：https://raw.github.com/josscrowcroft/accounting.js/master/accounting.js
使用实例
formatMoney
formatMoney // Default usage: accounting.formatMoney(12345678); // $12,345,678.00 // European formatting (custom symbol and separators), could also use options object as second param: accounting.formatMoney(4999.99, "€", 2, ".", ","); // €4.999,99 // Negative values are formatted nicely, too: accounting.formatMoney(-500000, "£ ", 0); // £ -500,000 // Simple `format` string allows control of symbol position [%v = value, %s = symbol]: accounting.formatMoney(5318008, { symbol: "GBP", format: "%v %s" }); // 5,318,008.00 GBP
formatNumber
accounting.formatNumber(5318008); // 5,318,008 accounting.formatNumber(9876543.21, 3, " "); // 9 876 543.210
unformat
accounting.unformat("£ 12,345,678.90 GBP"); // 12345678.9
//尝试demo
//工具 accounting.js /*! * accounting.js v0.4.1 * Copyright 2014 Open Exchange Rates * * Freely distributable under the MIT license. * Portions of accounting.js are inspired or borrowed from underscore.js * * Full details and documentation: * http://openexchangerates.github.io/accounting.js/ */ (function(root, undefined) { /* --- Setup --- */ // Create the local library object, to be exported or referenced globally later var lib = {}; // Current version lib.version = '0.4.1'; /* --- Exposed settings --- */ // The library's settings configuration object. Contains default parameters for // currency and number formatting lib.settings = { currency: { symbol : "$", // default currency symbol is '$' format : "%s%v", // controls output: %s = symbol, %v = value (can be object, see docs) decimal : ".", // decimal point separator thousand : ",", // thousands separator precision : 2, // decimal places grouping : 3 // digit grouping (not implemented yet) }, number: { precision : 0, // default precision on numbers is 0 grouping : 3, // digit grouping (not implemented yet) thousand : ",", decimal : "." } }; /* --- Internal Helper Methods --- */ // Store reference to possibly-available ECMAScript 5 methods for later var nativeMap = Array.prototype.map, nativeIsArray = Array.isArray, toString = Object.prototype.toString; /** * Tests whether supplied parameter is a string * from underscore.js */ function isString(obj) { return !!(obj === '' || (obj && obj.charCodeAt && obj.substr)); } /** * Tests whether supplied parameter is a string * from underscore.js, delegates to ECMA5's native Array.isArray */ function isArray(obj) { return nativeIsArray ? nativeIsArray(obj) : toString.call(obj) === '[object Array]'; } /** * Tests whether supplied parameter is a true object */ function isObject(obj) { return obj && toString.call(obj) === '[object Object]'; } /** * Extends an object with a defaults object, similar to underscore's _.defaults * * Used for abstracting parameter handling from API methods */ function defaults(object, defs) { var key; object = object || {}; defs = defs || {}; // Iterate over object non-prototype properties: for (key in defs) { if (defs.hasOwnProperty(key)) { // Replace values with defaults only if undefined (allow empty/zero values): if (object[key] == null) object[key] = defs[key]; } } return object; } /** * Implementation of `Array.map()` for iteration loops * * Returns a new Array as a result of calling `iterator` on each array value. * Defers to native Array.map if available */ function map(obj, iterator, context) { var results = [], i, j; if (!obj) return results; // Use native .map method if it exists: if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context); // Fallback for native .map: for (i = 0, j = obj.length; i < j; i++ ) { results[i] = iterator.call(context, obj[i], i, obj); } return results; } /** * Check and normalise the value of precision (must be positive integer) */ function checkPrecision(val, base) { val = Math.round(Math.abs(val)); return isNaN(val)? base : val; } /** * Parses a format string or object and returns format obj for use in rendering * * `format` is either a string with the default (positive) format, or object * containing `pos` (required), `neg` and `zero` values (or a function returning * either a string or object) * * Either string or format.pos must contain "%v" (value) to be valid */ function checkCurrencyFormat(format) { var defaults = lib.settings.currency.format; // Allow function as format parameter (should return string or object): if ( typeof format === "function" ) format = format(); // Format can be a string, in which case `value` ("%v") must be present: if ( isString( format ) && format.match("%v") ) { // Create and return positive, negative and zero formats: return { pos : format, neg : format.replace("-", "").replace("%v", "-%v"), zero : format }; // If no format, or object is missing valid positive value, use defaults: } else if ( !format || !format.pos || !format.pos.match("%v") ) { // If defaults is a string, casts it to an object for faster checking next time: return ( !isString( defaults ) ) ? defaults : lib.settings.currency.format = { pos : defaults, neg : defaults.replace("%v", "-%v"), zero : defaults }; } // Otherwise, assume format was fine: return format; } /* --- API Methods --- */ /** * Takes a string/array of strings, removes all formatting/cruft and returns the raw float value * Alias: `accounting.parse(string)` * * Decimal must be included in the regular expression to match floats (defaults to * accounting.settings.number.decimal), so if the number uses a non-standard decimal * separator, provide it as the second argument. * * Also matches bracketed negatives (eg. "$ (1.99)" => -1.99) * * Doesn't throw any errors (`NaN`s become 0) but this may change in future */ var unformat = lib.unformat = lib.parse = function(value, decimal) { // Recursively unformat arrays: if (isArray(value)) { return map(value, function(val) { return unformat(val, decimal); }); } // Fails silently (need decent errors): value = value || 0; // Return the value as-is if it's already a number: if (typeof value === "number") return value; // Default decimal point comes from settings, but could be set to eg. "," in opts: decimal = decimal || lib.settings.number.decimal; // Build regex to strip out everything except digits, decimal point and minus sign: var regex = new RegExp("[^0-9-" + decimal + "]", ["g"]), unformatted = parseFloat( ("" + value) .replace(/((.*))/, "-$1") // replace bracketed values with negatives .replace(regex, '') // strip out any cruft .replace(decimal, '.') // make sure decimal point is standard ); // This will fail silently which may cause trouble, let's wait and see: return !isNaN(unformatted) ? unformatted : 0; }; /** * Implementation of toFixed() that treats floats more like decimals * * Fixes binary rounding issues (eg. (0.615).toFixed(2) === "0.61") that present * problems for accounting- and finance-related software. */ var toFixed = lib.toFixed = function(value, precision) { precision = checkPrecision(precision, lib.settings.number.precision); var power = Math.pow(10, precision); // Multiply up by precision, round accurately, then divide and use native toFixed(): return (Math.round(lib.unformat(value) * power) / power).toFixed(precision); }; /** * Format a number, with comma-separated thousands and custom precision/decimal places * Alias: `accounting.format()` * * Localise by overriding the precision and thousand / decimal separators * 2nd parameter `precision` can be an object matching `settings.number` */ var formatNumber = lib.formatNumber = lib.format = function(number, precision, thousand, decimal) { // Resursively format arrays: if (isArray(number)) { return map(number, function(val) { return formatNumber(val, precision, thousand, decimal); }); } // Clean up number: number = unformat(number); // Build options object from second param (if object) or all params, extending defaults: var opts = defaults( (isObject(precision) ? precision : { precision : precision, thousand : thousand, decimal : decimal }), lib.settings.number ), // Clean up precision usePrecision = checkPrecision(opts.precision), // Do some calc: negative = number < 0 ? "-" : "", base = parseInt(toFixed(Math.abs(number || 0), usePrecision), 10) + "", mod = base.length > 3 ? base.length % 3 : 0; // Format the number: return negative + (mod ? base.substr(0, mod) + opts.thousand : "") + base.substr(mod).replace(/(d{3})(?=d)/g, "$1" + opts.thousand) + (usePrecision ? opts.decimal + toFixed(Math.abs(number), usePrecision).split('.')[1] : ""); }; /** * Format a number into currency * * Usage: accounting.formatMoney(number, symbol, precision, thousandsSep, decimalSep, format) * defaults: (0, "$", 2, ",", ".", "%s%v") * * Localise by overriding the symbol, precision, thousand / decimal separators and format * Second param can be an object matching `settings.currency` which is the easiest way. * * To do: tidy up the parameters */ var formatMoney = lib.formatMoney = function(number, symbol, precision, thousand, decimal, format) { // Resursively format arrays: if (isArray(number)) { return map(number, function(val){ return formatMoney(val, symbol, precision, thousand, decimal, format); }); } // Clean up number: number = unformat(number); // Build options object from second param (if object) or all params, extending defaults: var opts = defaults( (isObject(symbol) ? symbol : { symbol : symbol, precision : precision, thousand : thousand, decimal : decimal, format : format }), lib.settings.currency ), // Check format (returns object with pos, neg and zero): formats = checkCurrencyFormat(opts.format), // Choose which format to use for this value: useFormat = number > 0 ? formats.pos : number < 0 ? formats.neg : formats.zero; // Return with currency symbol added: return useFormat.replace('%s', opts.symbol).replace('%v', formatNumber(Math.abs(number), checkPrecision(opts.precision), opts.thousand, opts.decimal)); }; /** * Format a list of numbers into an accounting column, padding with whitespace * to line up currency symbols, thousand separators and decimals places * * List should be an array of numbers * Second parameter can be an object containing keys that match the params * * Returns array of accouting-formatted number strings of same length * * NB: `white-space:pre` CSS rule is required on the list container to prevent * browsers from collapsing the whitespace in the output strings. */ lib.formatColumn = function(list, symbol, precision, thousand, decimal, format) { if (!list) return []; // Build options object from second param (if object) or all params, extending defaults: var opts = defaults( (isObject(symbol) ? symbol : { symbol : symbol, precision : precision, thousand : thousand, decimal : decimal, format : format }), lib.settings.currency ), // Check format (returns object with pos, neg and zero), only need pos for now: formats = checkCurrencyFormat(opts.format), // Whether to pad at start of string or after currency symbol: padAfterSymbol = formats.pos.indexOf("%s") < formats.pos.indexOf("%v") ? true : false, // Store value for the length of the longest string in the column: maxLength = 0, // Format the list according to options, store the length of the longest string: formatted = map(list, function(val, i) { if (isArray(val)) { // Recursively format columns if list is a multi-dimensional array: return lib.formatColumn(val, opts); } else { // Clean up the value val = unformat(val); // Choose which format to use for this value (pos, neg or zero): var useFormat = val > 0 ? formats.pos : val < 0 ? formats.neg : formats.zero, // Format this value, push into formatted list and save the length: fVal = useFormat.replace('%s', opts.symbol).replace('%v', formatNumber(Math.abs(val), checkPrecision(opts.precision), opts.thousand, opts.decimal)); if (fVal.length > maxLength) maxLength = fVal.length; return fVal; } }); // Pad each number in the list and send back the column of numbers: return map(formatted, function(val, i) { // Only if this is a string (not a nested array, which would have already been padded): if (isString(val) && val.length < maxLength) { // Depending on symbol position, pad after symbol or at index 0: return padAfterSymbol ? val.replace(opts.symbol, opts.symbol+(new Array(maxLength - val.length + 1).join(" "))) : (new Array(maxLength - val.length + 1).join(" ")) + val; } return val; }); }; /* --- Module Definition --- */ // Export accounting for CommonJS. If being loaded as an AMD module, define it as such. // Otherwise, just add `accounting` to the global object if (typeof exports !== 'undefined') { if (typeof module !== 'undefined' && module.exports) { exports = module.exports = lib; } exports.accounting = lib; } else if (typeof define === 'function' && define.amd) { // Return the library as an AMD module: define([], function() { return lib; }); } else { // Use accounting.noConflict to restore `accounting` back to its original value. // Returns a reference to the library's `accounting` object; // e.g. `var numbers = accounting.noConflict();` lib.noConflict = (function(oldAccounting) { return function() { // Reset the value of the root's `accounting` variable: root.accounting = oldAccounting; // Delete the noConflict method: lib.noConflict = undefined; // Return reference to the library to re-assign it: return lib; }; })(root.accounting); // Declare `fx` on the root (global/window) object: root['accounting'] = lib; } // Root will be `window` in browser or `global` on the server: }(this)); //自己代码 let util = new Object(); /** * @description 金额格式化 * @param money 要格式化的金额 * @param config 金额格式化配置对象，默认值为{moneySymbol: '', decimalPlaces: 2, thousandsSeparator: ',', decimalSeparator: '.', format: '%s%v'} * moneySymbol：格式化符号；decimalPlaces：小数位数；thousandsSeparator：千分位分隔符；decimalSeparator：小数位分隔符；format：控制符号位置，%v为值，%s为符号，默认为%s%v */ util.formatMoney = (money, config) => { config = Object.assign({moneySymbol: '', decimalPlaces: 2, thousandsSeparator: ',', decimalSeparator: '.', format: '%v%s'}, config); return accounting.formatMoney(money, config.moneySymbol, config.decimalPlaces, config.thousandsSeparator, config.decimalSeparator, config.format,); }; console.log( util.formatMoney('4852100', {moneySymbol: '￥', decimalPlaces: 2, thousandsSeparator: ',', decimalSeparator: '.', format: '%v%s'}) ); //"4,852,100.00￥" console.log( util.formatMoney('4852100', {moneySymbol: '￥ ', decimalPlaces: 2, thousandsSeparator: ',', decimalSeparator: '.', format: '%s%v'}) ); //"￥ 4,852,100.00"
演示地址：https://codepen.io/namePeach/pen/agwNVw?editors=0012
官方演示实例：http://josscrowcroft.github.com/accounting.js/
http://openexchangerates.github.io/accounting.js/
转载：https://www.cnblogs.com/vipstone/archive/2012/08/24/2653871.html