JS轉換number爲貨幣格式

一：number轉換爲貨幣

// Extend the default Number object with a formatMoney() method:
// usage: someVar.formatMoney(decimalPlaces保留小數位數, symbol貨幣符號, thousandsSeparator整數千分位分隔符, decimalSeparator小數分隔符)
// defaults: (2, "$", ",", ".")
Number.prototype.formatMoney = function (places, symbol, thousand, decimal) {
    places = !isNaN(places = Math.abs(places)) ? places : 2;
    symbol = symbol !== undefined ? symbol : "$";
    thousand = thousand || ",";
    decimal = decimal || ".";
    var number = this,
    negative = number < 0 ? "-" : "",
    i = parseInt(number = Math.abs(+number || 0).toFixed(places), 10) + "",
    j = (j = i.length) > 3 ? j % 3 : 0;
    return symbol + negative + (j ? i.substr(0, j) + thousand : "") + i.substr(j).replace(/(\d{3})(?=\d)/g, "$1" + thousand) + (places ? decimal + Math.abs(number - i).toFixed(places).slice(2) : "");
};

12345678.formatMoney() => $12,345,678.00

12345678.formatMoney(0, "$ ") => $ 12,345,678

12345678.formatMoney(0, "$ ") => $ 12,345,678

1999.99.formatMoney(2, "$", ".", ",") => $4.999,99

(-100000).formatMoney(0, "$ ") => $ -100,000

方法二：貨幣轉爲number

parseFloat(price.replace(/[^0-9-.]/g, ''))  //小數分隔爲"."

parseFloat(price.replace(/[^0-9-,]/g, ''))  //小數分隔爲","

推薦插件：accounting.js

api地址：http://openexchangerates.github.io/accounting.js/

npm地址：https://www.npmjs.com/package/accounting

numeral.js

api地址：http://numeraljs.com/

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AfrikaansAlbanianArabicArmenianAzerbaijaniBasqueBelarusianBengaliBosnianBulgarianCatalanCebuanoChichewaChinese (Simplified)Chinese (Traditional)CroatianCzechDanishDutchEnglishEsperantoEstonianFilipinoFinnishFrenchGalicianGeorgianGermanGreekGujaratiHaitian CreoleHausaHebrewHindiHmongHungarianIcelandicIgboIndonesianIrishItalianJapaneseJavaneseKannadaKazakhKhmerKoreanLaoLatinLatvianLithuanianMacedonianMalagasyMalayMalayalamMalteseMaoriMarathiMongolianMyanmar (Burmese)NepaliNorwegianPersianPolishPortuguesePunjabiRomanianRussianSerbianSesothoSinhalaSlovakSlovenianSomaliSpanishSundaneseSwahiliSwedishTajikTamilTeluguThaiTurkishUkrainianUrduUzbekVietnameseWelshYiddishYorubaZulu

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