计算n的阶乘，n可输入

计算n的阶乘，n可输入

	// 5 != 5 * 4 * 3 * 2 * 1 * 1;
    // 4 != 4 * 3 * 2 * 1;
    var n = parseInt(window.prompt('请输入n的值：'));
    var mul = 1;
    for (var i = 1; i <= n; i++) {
        mul *= i;
    }
    document.write(mul);

来源：CSDN

作者：Eli-sun

链接：https://blog.csdn.net/vfjcgg/article/details/104572446