Start a function at a specified date

Question

Start a function at a specified date

I m working on a TV player on raspberry pi/raspbian

The player part work, my playlist work too, but I m stuck at this:

I get the playlist with a start date (parsing is ok), but I have no idea how I could do to replace the previous playlist by the new one at the scheduled date.

Is there a way to start a function only at a specified time without eating all the cpu by a false "wait"?

I was wondering about setTimeOut function, but is there better way than this?

javascript
node.js
raspberry-pi
raspbian

Answer 1

Take a look at node-cron. It will make a call to your callback at the specified cron time. Take a look at some sample code:

var cronJob = require('cron').CronJob;
new cronJob('00 30 11 * * 1-5', function(){
    // Runs every weekday (Monday through Friday)
    // at 11:30:00 AM. It does not run on Saturday
    // or Sunday.
    console.log('Hello');
}, null, true, "America/Los_Angeles");