Function formatNumber

OpenReservation/wwwroot/Scripts/angular.js:20164–20227

* Format a number into a string * @param {number} number The number to format * @param {{ * minFrac, // the minimum number of digits required in the fraction part of the number * maxFrac, // the maximum number of digits required in the fraction part of

(number, pattern, groupSep, decimalSep, fractionSize)

     * @return {string}              The number formatted as a string
     */
    function formatNumber(number, pattern, groupSep, decimalSep, fractionSize) {
        if (!(isString(number) || isNumber(number)) || isNaN(number)) return '';

        var isInfinity = !isFinite(number);
        var isZero = false;
        var numStr = Math.abs(number) + '',
            formattedText = '',
            parsedNumber;

        if (isInfinity) {
            formattedText = '\u221e';
        } else {
            parsedNumber = parse(numStr);

            roundNumber(parsedNumber, fractionSize, pattern.minFrac, pattern.maxFrac);

            var digits = parsedNumber.d;
            var integerLen = parsedNumber.i;
            var exponent = parsedNumber.e;
            var decimals = [];
            isZero = digits.reduce(function (isZero, d) { return isZero && !d; }, true);

            // pad zeros for small numbers
            while (integerLen < 0) {
                digits.unshift(0);
                integerLen++;
            }

            // extract decimals digits
            if (integerLen > 0) {
                decimals = digits.splice(integerLen);
            } else {
                decimals = digits;
                digits = [0];
            }

            // format the integer digits with grouping separators
            var groups = [];
            if (digits.length > pattern.lgSize) {
                groups.unshift(digits.splice(-pattern.lgSize).join(''));
            }
            while (digits.length > pattern.gSize) {
                groups.unshift(digits.splice(-pattern.gSize).join(''));
            }
            if (digits.length) {
                groups.unshift(digits.join(''));
            }
            formattedText = groups.join(groupSep);

            // append the decimal digits
            if (decimals.length) {
                formattedText += decimalSep + decimals.join('');
            }

            if (exponent) {
                formattedText += 'e+' + exponent;
            }
        }