MiniUI Api文档:http://miniui.com/docs/api/index.html 1.取组件值 传递form data,load发送 请求加载数据 <script type="text/javascript"> mini.parse(); // get grid var grid = mini.get("grid"); var form = new mini.Form("#form"); function
查jx_score表的平均值,以哪次考试(testid)和科目分组(courseid) select testid, courseid, round(avg(`jx_score`.`score`),2) AS `average` from `jx_score` group by `jx_score`.`testid`,`jx_score`.`courseid`
一.代码 import decimal decimal.getcontext().rounding = decimal.ROUND_HALF_UP def index(number): n = str(number*100) n = decimal.Decimal(n).__round__(1) n = n / decimal.Decimal("100") n = decimal.Decimal(str(n), decimal.getcontext()) return float(n.
js保留两位小数四舍五入: (Math.floor(until_price*100)/100).toFixed(2);//会四舍五入 保留两位小数 且不四舍五入(三种方式,请用最后一种): var num="2.999999999"; num = Number(num); num*=100; num = (Math.floor(num)/100).toFixed(2); alert(num); var a = "2.999999999"; a = a-0; a*
换行的字符串 "This string\nhas two lines" 字符串中使用单引号时应该怎么写 'You\'re right, it can\'t be a quote' 把数字变成字符串并保留两位小数 var n = 123456.789 n.toFixed(0); //"123457" n.toFixed(2); //"123456.79" parseFloat(str)str以非数字开头,则返回NaN parseFloat(str)
java保留两位小数问题: 方式一: 四舍五入 double f = 111231.5585; BigDecimal b = new BigDecimal(f); double f1 = b.setScale(2, BigDecimal.ROUND_HALF_UP).doubleValue(); 保留两位小数 --------------------------------------------------------------- 方
4种方法,都是四舍五入,例: import java.math.BigDecimal; import java.text.DecimalFormat; import java.text.NumberFormat; public class format { double f = 111231.5585; public void m1() { BigDecimal bg = new BigDecimal(f); double f1 = bg.setScale(2, BigDecimal.ROUND