<script type="text/javascript">

        function changeDecimalBuZero(number, bitNum) {
            /// <summary>
            /// 小数位不够,用0补足位数
            /// </summary>
            /// <param name="number">要处理的数字</param>
            /// <param name="bitNum">生成的小数位数</param>
            var f_x = parseFloat(number);
            if (isNaN(f_x)) {
                return 0;
            }
            var s_x = number.toString();
            var pos_decimal = s_x.indexOf('.');
            if (pos_decimal < 0) {
                pos_decimal = s_x.length;
                s_x += '.';
            }
            while (s_x.length <= pos_decimal + bitNum) {
                s_x += '0';
            }
            return s_x;
        }

    </script>


本文转载:CSDN博客