node-cron/test.js at master · ErrorProne/node-cron · GitHub

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var cron = require('cron'),
sys = require('sys');

new cron.CronJob('00 * * * * *', function(){
    sys.puts(new Date() + ' You will see this message when the seconds are zero');
});

new cron.CronJob('*/5 * * * * *', function(){
    sys.puts(new Date() + ' You will see this message every five seconds ');
});

new cron.CronJob('10-20 * * * * *', function(){
    sys.puts(new Date() + ' You will see this message from seconds ten through twenty ');
});

// How to check if a cron pattern is valid
try {
	new cron.CronTime('invalid cron pattern', function() {
		sys.puts('this should not be printed');
	})
} catch(ex) {
	sys.puts("cron pattern not valid: ", ex.message);
}