Node.js process.uptime()方法
原文:https://www . geesforgeks . org/node-js-process-uptime-method/
process.uptime()方法是流程模块的内置应用编程接口，用于获取 Node.js 流程运行的秒数。
语法:
process.uptime();
参数:此方法不接受任何参数。
返回值:返回一个浮点数，指定 Node.js 进程运行的秒数。
下面的例子说明了在 Node.js 中 process.uptime()方法的使用:
例 1:
// Node.js program to demonstrate the
// process.uptime() Method
// Allocating process module
const process = require('process');
// Printing the number of seconds
// the Node.js process is running
console.log(process.uptime());
输出:
0.0842063
例 2:
// Node.js program to demonstrate the
// process.uptime() Method
// Allocating process module
const process = require('process');
// Checking whether the method
// exists or not
if (process.uptime) {
// Printing uptime() value
console.log("The number of seconds the"
+ " Node.js process is running: "
+ process.uptime() + " seconds");
var i = 1000000;
while(i--);
console.log("The number of seconds the"
+ " Node.js process is running: "
+ process.uptime() + " seconds");
console.log("In whole seconds: "
+ Math.floor(process.uptime())
+ " seconds");
}
输出:
the number of seconds the Node.js process is running: 0.077 seconds
the number of seconds the Node.js process is running: 0.087 seconds
In whole seconds: 0 seconds
注意:以上程序使用node filename.js命令编译运行。
参考:T2】https://nodejs.org/api/process.html#process_process_uptime
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