function roundFun(numberRound,roundDigit) //四舍五入，保留位数为roundDigit ,供计算时用
{
if (numberRound=0)
{
var tempNumber = parseInt((numberRound * Math.pow(10,roundDigit)+0.5))/Math.pow(10,roundDigit);
return tempNumber;
}
else
{
numberRound1=-numberRound
var tempNumber = parseInt((numberRound1 * Math.pow(10,roundDigit)+0.5))/Math.
<script language="javascript">
function roundFun(numberRound,roundDigit) //四舍五入，保留位数为roundDigit ,供计算时用
{
if (numberRound>=0)
{
var tempNumber = parseInt((numberRound * Math.pow(10,roundDigit)+0.5))/Math.pow(10,roundDigit);
return tempNumber;
}
else
{
numberRound1=-numberRound
var tempNumber = parseInt((numberRound1 * Math.pow(10,roundDigit)+0.5))/Math.pow(10,roundDigit);
return -tempNumber;
}
}
</script>
<script language="JavaScript">
function adv_format(value,num) //四舍五入
{
var a_str = formatnumber(value,num);
var a_int = parseFloat(a_str);
if (value.toString().length>a_str.length)
{
var b_str = value.toString().substring(a_str.length,a_str.length+1)
var b_int = parseFloat(b_str);
if (b_int<5)
{
return a_str
}
else
{
var bonus_str,bonus_int;
if (num==0)
{
bonus_int = 1;
}
else
{
bonus_str = "0."
for (var i=1; i<num; i++)
bonus_str+="0";
bonus_str+="1";
bonus_int = parseFloat(bonus_str);
}
a_str = formatnumber(a_int + bonus_int, num)
}
}
return a_str
}
function formatnumber(value,num) //直接去尾
{
var a,b,c,i
a = value.toString();
b = a.indexOf(\'.\');
c = a.length;
if (num==0)
{
if (b!=-1)
a = a.substring(0,b);
}
else
{
if (b==-1)
{
a = a + ".";
for (i=1;i<=num;i++)
a = a + "0";
}
else
{
a = a.substring(0,b+num+1);
for (i=c;i<=b+num;i++)
a = a + "0";
}
}
return a
}
</script>