js 金钱格式转化

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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) : "");};

用法：

// Default usage and custom precision/symbol :    var revenue = 12345678;    alert(revenue.formatMoney()); // ¥12,345,678.00    alert(revenue.formatMoney(0, "HK$ ")); // HK$ 12,345,678    // European formatting:    var price = 4999.99;    alert(price.formatMoney(2, "€", ".", ",")); // €4.999,99    // It works for negative values, too:    alert((-500000).formatMoney(0, "£ ")); // £ -500,000

转载至 http://www.cnblogs.com/mingmingruyuedlut/archive/2013/05/19/3082177.html

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