Node. js USES node schedule to implement a timed task instance

Sometimes, according to the business needs, this may be helpful when some operations are performed after midnight. I am currently studying this and welcome to discuss with you.

Making address: https://github.com/mattpat/node-schedule

A, install,

npm install node-schedule

Two, determine the time, for example: November 21, 2012, 5:30

var schedule = require('node-schedule');
var date = new Date(2012, 11, 21, 5, 30, 0);
var j = schedule.scheduleJob(date, function(){
    console.log('The world is going to end today.');
});
 Cancel default plan 

[code]
j.cancel();

A fixed number of minutes per hour, for example, 42 minutes per hour

var schedule = require('node-schedule');
var rule = new schedule.RecurrenceRule();
rule.minute = 42;
var j = schedule.scheduleJob(rule, function(){
    console.log('The answer to life, the universe, and everything!');
});

A certain time of day on certain days of the week, e.g. every Thursday, Friday, Saturday, Sunday at 17:00

var rule = new schedule.RecurrenceRule();
rule.dayOfWeek = [0, new schedule.Range(4, 6)];
rule.hour = 17;
rule.minute = 0;
var j = schedule.scheduleJob(rule, function(){
    console.log('Today is recognized by Rebecca Black!');
});

Execution per second

　　var rule = new schedule.RecurrenceRule();
　　var times = [];
　　for(var i=1; i<60; i++){
　　　　times.push(i);
　　}
　　rule.second = times;
　　var c=0;
　　var j = schedule.scheduleJob(rule, function(){
     　　 c++;
      　　console.log(c);
　　});