process.uptime()

• 返回：<number>

  ¥Returns: <number>

process.uptime() 方法返回当前 Node.js 进程已经运行的秒数。

¥The process.uptime() method returns the number of seconds the current Node.js process has been running.

返回值包括几分之一秒。使用 Math.floor() 获得整秒。

¥The return value includes fractions of a second. Use Math.floor() to get whole seconds.