npm install node-schedule

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

 function scheduleCron(){

     schedule.scheduleJob('1 * * * * *', function(){

         console.log('Hello World');

     });

 }

 scheduleCron();

*    *    *    *    *    *

┬    ┬    ┬    ┬    ┬    ┬

│    │    │    │    │    |

│    │    │    │    │    └ [dayOfWeek]day of week (0 - 7) (0 or 7 is Sun)  周几

│    │    │    │    └───── [month]month (1 - 12)             月

│    │    │    └────────── [date]day of month (1 - 31)　　　　日　

│    │    └─────────────── [hour]hour (0 - 23)　　　　　　　　  时

│    └──────────────────── [minute]minute (0 - 59)　　　　　　 分

└───────────────────────── [second]second (0 - 59, OPTIONAL) 秒

 function scheduleCron(){

     schedule.scheduleJob('1-10 * * * * *', function(){

         console.log('每分钟的1-10秒执行');

     });

 }

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

 function scheduleRule(){

     var rule = new schedule.RecurrenceRule();

     rule.dayOfWeek = 5;     // 周几

     rule.month = 4;　　　　    // 月　

     rule.dayOfMonth = 3;    // 日

     rule.hour = 2;          // 时

     rule.minute = 1;　　　　   // 分　　　

     rule.second = 0;        // 秒　   

     schedule.scheduleJob(rule, function(){

         console.log('hello world');

     });

 }

 scheduleRule()

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

function scheduleRule(){

    var rule = new schedule.RecurrenceRule();

    // 每隔2秒执行

    // 分、时、等同理

    rule.second = [1,3,5,7];        　   

    schedule.scheduleJob(rule, function(){

        console.log('hello world');

    });

}

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

function scheduleDate(){

    var date = new Date(2017,7,12,14,50,0);

    schedule.scheduleJob(rule, function(){

        console.log('hello world');

    });

}

scheduleDate();

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

 function scheduleCancel(){

     var counter = 1;

     var j = schedule.scheduleJob('* * * * * *', function(){

         console.log('定时器触发次数：' + counter);

         counter++;

     });

     setTimeout(function() {

         console.log('定时器取消')

         j.cancel();

     }, 5000);

 }

 scheduleCancel();