阶乘（Factorial）是一个常见的数学运算，用于计算一个正整数的阶乘。在这篇文章中，我们将使用JavaScript编写一个计算阶乘的函数，并提供相应的源代码。 阶乘的定义如下：对于一个非负整数n，它的阶乘（记作n!）是所有小于或等于n的正整数的乘积。例如，5!

We believe in a future in which the web is a preferred environment for numerical computation. To help realize this future, we've built stdlib. stdlib is a standard library, with an emphasis on ...

The program prompts the user to enter an integer to calculate its factorial. Then, it checks if the entered number is non-negative. If it is, the program calculates the factorial of the number and ...