js 将数值显示为金额

项目中常遇到要将数值显示为金额。例如：3000 => $3,000.00

function formateMoney(number, places, symbol, thousand, decimal) {
    number = number || 0;
    places = !isNaN(places = Math.abs(places)) ? places : 2;
    symbol = symbol !== undefined ? symbol : "$";
    thousand = thousand || ",";
    decimal = decimal || ".";
    var 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) : "");
}

function getSelectPos(obj) {
    var esrc = document.getElementById(obj);
    if (esrc == null) {
        esrc = event.srcElement;
    }
    var rtextRange = esrc.createTextRange();
    rtextRange.moveStart('character', esrc.value.length);
    rtextRange.collapse(true);
    rtextRange.select();
}

具体用法：

$("#tbPrice").focus(function () {
        var price = $("#Price").val();
        $(this).val(price);
        getSelectPos("tbPrice");
 });

    $("#tbPrice").blur(function () {
        var value = $(this).val();
        if (!isNaN(value) && value != "") {
            var price = parseFloat(value);
            var formattedPrice = formateMoney(price, 2, "");
            $("#Price").val(price.toFixed(2));
            $(this).val(formattedPrice);
        }
        else {
            $("#Price").val("");
        }
    });

Html部分为：

<input type="text" id="tbPrice" name="tbPrice"/> //用来显示金额
<input type="text" id="Price" name="Price" style="display:none;"/> //用来保存真正的数值