UC知道求javascrip高手，帮忙修改错误
来源：百度知道 编辑：UC知道 时间：2024/05/17 08:14:58
用javascript计算阶乘得到错误结果
<script type ="text/javascript" >
function factor()
{
var var1 = document.getElementById("Text1");
var n = var1.value;
var i,fact=1;
for(i=1;i<n+1;i++)
fact=i*fact;
document.write ("阶乘为",fact);
}
</script>
<script type ="text/javascript" >
function factor()
{
var var1 = document.getElementById("Text1");
var n = var1.value;
var i,fact=1;
for(i=1;i<n+1;i++)
fact=i*fact;
document.write ("阶乘为",fact);
}
</script>
<script type ="text/javascript" >
function factor()
{
var var1 = document.getElementById("Text1");
var n = var1.value;
//加上这句,把n先转换成整数，不然的话假设n为"3",n+1就是31了，结果肯定相当大
n = parseInt(n);
var i,fact=1;
for(i=1;i<n+1;i++)
fact=i*fact;
document.write ("阶乘为",fact);
}
</script>