10_ for 练习 _ is Prime Number ?
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Is Prime Number?</title>
</head>
<body>
<script type="text/javascript">
var xNumber = +prompt("请输入一个大于1的数字:");
var isPrimeNumber = true; if(xNumber>1 && xNumber != NaN)
{
for(i=2; i<xNumber; i++)
{
if(xNumber%i==0)
{
isPrimeNumber = false;
}
}
}
if(isPrimeNumber)
{
document.write(xNumber+" is a Prime Number.");
}
else
{
document.write(xNumber+" is NOT a Prime Number.");
}
</script>
</body>
</html>
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