Get next cron job timing in node-cron

user_13614476 0
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In node-cron, how do I get the timing of the next cron-job? e.g. cronJob.nextCronJob().time, or other properties. There are no methods in the documentation to show this.

node-cron node-modules node.js cron javascript
2 Answers

I'm not aware of any way of getting this using the node-cron module. You can do this with the cron module however, using the cronJob.nextDates() function, like so:

const CronJob = require("cron").CronJob;

const cronJob = new CronJob(
    "*/30 * * * * *",
    () => {
        console.log("Timestamp: ", new Date());
    },
    null,
    true
);

setInterval(() => { 
    console.log("Next job time:", cronJob.nextDates().toISOString());
}, 5000);

If you have to use the node-cron module, you could have a look at cron-parser, this will parse a cron expression and give you the next run time(s), e.g.

const parser = require('cron-parser');

const cronExpression = "*/30 * * * * *";
const interval = parser.parseExpression(cronExpression);
console.log('Next run:', interval.next().toISOString());
user_72372240

below here is how we previously used to get ISOString however this won't work now since corn has upgraded its version. With its new version, they have dropped momentJs and are using luxon.

cronJob.nextDates(1)[0].toISOString()

In order to get it to work now, you can use the following code.

cronJob.nextDates(1)[0].toJSDate().toISOString()
user_190233570
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