هرمش - محرر الكود

var n;

do 
{
    write("Enter number of lines: ");
    n = read();
}
while (n<=0 || isNaN(n));

for (var i=1; i<=n; i++)
{
    for (var k=1; k<=n-i; k++)
    {
        write(" ");
    }
    
    for (var j=1; j<=(i*2)-1; j++)
    {
        write("*");
    }
    
    write("\n");
}