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node-cron

install

npm install node-cron 

how to use

const cron = require('codes/node-cron');

let range = '* 0-23 * * *';

cron.schedule(range, async ()=>{
    // your func
},{
    scheduled: true, // 是否自动启动
    timezone: "Asia/Shanghai"
});

range取值

     # ┌────────────── second (optional)
     # │ ┌──────────── minute
     # │ │ ┌────────── hour
     # │ │ │ ┌──────── day of month
     # │ │ │ │ ┌────── month
     # │ │ │ │ │ ┌──── day of week
     # │ │ │ │ │ │
     # │ │ │ │ │ │
     # * * * * * *

field	value
second	0-59
minute	0-59
hour	0-23
day of month	1-31
month	1-12 (or names)
day of week	0-7 (or names, 0 or 7 are sunday)

取值示例: 格式|意思 —|— * * * * *| 每分钟执行一次 */2 * * * *|每偶数分钟执行一次 1,2,3,4 * * * *|分针到达1,2,3,4分的时候执行 1-4 * * * *|同上

scheduled取值

1. true: 启动就自动运行

2. false: 可以通过变成触发

• 初始化

var task = cron.schedule('* * * * *', () =>  {
  console.log('will execute every minute until stopped');
},{scheduled:false});

• Start

task.start();

• Stop

task.stop();

• Destory

task.destory();

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