如何根据其拥有的实时时间而不是其设备中的时间来计时Node js中的功能每6小时工作一次？

Question

var time= new Date().getHours();

if(time== "6"){
       //function Do stuff
}
if(time== "12"){
       //function Do stuff
}
if(time== "18"){
       //function Do stuff
}
if(time== "24"){
       //function Do stuff
}

but when change time in my lab to any of these hours the function call

how can to get real time in his zone ?

Answer 1

You can use the node schedule library. https://www.npmjs.com/package/node-schedule

var schedule = require('node-schedule');

schedule.scheduleJob("*/6 * * *", function() {
     //function Do stuff every 6 hours
});

Cron job format

*    *    *    *    *    *
┬    ┬    ┬    ┬    ┬    ┬
│    │    │    │    │    │
│    │    │    │    │    └ day of week (0 - 7) (0 or 7 is Sun)
│    │    │    │    └───── month (1 - 12)
│    │    │    └────────── day of month (1 - 31)
│    │    └─────────────── hour (0 - 23) 
│    └──────────────────── minute (0 - 59)
└───────────────────────── second (0 - 59, OPTIONAL)

Alternatively a more verbose method

schedule.scheduleJob({hour: 6, minute: 0, dayOfWeek: 0}, function(){
   //function Do stuff every 6 hours
});