lib/Ext/core/lang/Number.js
function(value, precision) {
        if (isToFixedBroken) {
            precision = precision || 0;
            var pow = Math.pow(10, precision);
            return (Math.round(value * pow) / pow).toFixed(precision);
        }

        return value.toFixed(precision);
    }
function(value, precision) {
        if (isToFixedBroken) {
            precision = precision || 0;
            var pow = Math.pow(10, precision);
            return (Math.round(value * pow) / pow).toFixed(precision);
        }

        return value.toFixed(precision);
    }
Formats a number using fixed-point notation
@param {Number} value The number to format
@param {Number} precision The number of digits to show after the decimal point