素數:
<script?type="text/javascript">var?i,j,m,n=o;
for?(i=0;i<=1000;i++)
{?
for(m=1,j=2;j<=(int)sqrt(i);j++)if(i%j==0)?{m=0;break;}
if(m==1) {document.write(i);
n++;
if(n%6==0)?document.writeln();
}}
質數:
var?a?=?[2,3,5];for?(var?i=7;?i<1000;?i+=2)?{
if?(check(i))?a.push(i);
}
alert(a);
function?check(n){
for?(var?i=0;?i<a.length;?i++)?{
if?(a[i]?*?a[i]?>?n)?return?true;
if?(n?%?a[i]?===?0)?return?false;
}
}