CmsWeb/shop/js/Calculation.js

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/** jQuery Calculation Plug-in**/
(function($) {
    var defaults = {reNumbers: /(-|-\$)?(\d+(,\d{3})*(\.\d{1,})?|\.\d{1,})/g, cleanseNumber: function (v) {
        return v.replace(/[^0-9.\-]/g, "");
    }, useFieldPlugin: (!!$.fn.getValue), onParseError: null, onParseClear: null};
    $.Calculation = {version: "0.4.07",setDefaults: function(options) {
        $.extend(defaults, options);
    }};
    $.fn.parseNumber = function(options) {
        var aValues = [];
        options = $.extend(options, defaults);
        this.each(function () {
            var $el = $(this),sMethod = ($el.is(":input") ? (defaults.useFieldPlugin ? "getValue" : "val") : "text"),v = $.trim($el[sMethod]()).match(defaults.reNumbers, "");
            if (v == null) {
                v = 0;
                if (jQuery.isFunction(options.onParseError)) options.onParseError.apply($el, [sMethod]);
                $.data($el[0], "calcParseError", true);
            } else {
                v = options.cleanseNumber.apply(this, [v[0]]);
                if ($.data($el[0], "calcParseError") && jQuery.isFunction(options.onParseClear)) {
                    options.onParseClear.apply($el, [sMethod]);
                    $.data($el[0], "calcParseError", false);
                }
            }
            aValues.push(parseFloat(v, 10));
        });
        return aValues;
    };
    $.fn.calc = function(expr, vars, cbFormat, cbDone) {
        var $this = this, exprValue = "", precision = 0, $el, parsedVars = {}, tmp, sMethod, _, bIsError = false;
        for (var k in vars) {
            expr = expr.replace((new RegExp("(" + k + ")", "g")), "_.$1");
            if (!!vars[k] && !!vars[k].jquery) {
                parsedVars[k] = vars[k].parseNumber();
            } else {
                parsedVars[k] = vars[k];
            }
        }
        this.each(function (i, el) {
            var p, len;
            $el = $(this);
            sMethod = ($el.is(":input") ? (defaults.useFieldPlugin ? "setValue" : "val") : "text");
            _ = {};
            for (var k in parsedVars) {
                if (typeof parsedVars[k] == "number") {
                    _[k] = parsedVars[k];
                } else if (typeof parsedVars[k] == "string") {
                    _[k] = parseFloat(parsedVars[k], 10);
                } else if (!!parsedVars[k] && (parsedVars[k] instanceof Array)) {
                    tmp = (parsedVars[k].length == $this.length) ? i : 0;
                    _[k] = parsedVars[k][tmp];
                }
                if (isNaN(_[k])) _[k] = 0;
                p = _[k].toString().match(/\.\d+$/gi);
                len = (p) ? p[0].length - 1 : 0;
                if (len > precision) precision = len;
            }
            try {
                exprValue = eval(expr);
                if (precision) exprValue = Number(exprValue.toFixed(Math.max(precision, 4)));