在节点js中的另一个cron作业内执行一个cron作业

Question

我试图在节点JS中的另一个cron作业中运行一个cron作业。外部cron作业在第1天只执行一次：内部cron作业在第2天执行1次：内部cron作业在第3天执行2次：内部cron作业执行3次

cron.schedule("0 30 16 * * Monday,Tuesday,Wednesday,Thursday,Friday,Saturday", function () {
    console.log("inside outside cron job ")
    cron.schedule("10 30 16 * * Monday,Tuesday,Wednesday,Thursday,Friday,Saturday", function () {
    console.log("inside  cron job 1")
    })
})

为什么它要多次执行，尽管我在cron作业中调用它一次

Answer 1

const cron = require("node-cron");
var a;
var b;
var hr;
var min;
var sec;
cron.schedule("0 0 1 * * Monday,Tuesday,Wednesday,Thursday,Friday,Saturday", function () {
    min = 30;
    hr = 8;
    sec = "0" + ' ' + min + ' ' + hr + ' ' + "* * Monday,Tuesday,Wednesday,Thursday,Friday,Sunday";
    if (a) {
        a.stop()
    }
    a = cron.schedule(sec, function () {});
    min = 30;
    hr = 16;
    sec = "0" + ' ' + min + ' ' + hr + ' ' + "* * Monday,Tuesday,Wednesday,Thursday,Friday,Sunday";
    if (b) {
        b.stop();
    }
    b = cron.schedule(sec, function () {});
});