match-cron.js

function matchCron (cron,date){
    let arr = cron.split(' ')
    let minute = arr[0]
    let hour = arr[1]
    let dayOfMonth = arr[2]
    let month = arr[3]
    let dayWeek = arr[4]
    // console.log(date.getDay()+1)
    let flag = false
    if(minute === '*'|| minute == date.getMinutes()){
        flag = true
    }else{
        return false
    }
    if(hour === '*'|| hour == date.getHours()){
        flag = true
    }else{
        return false
    }
    if(dayOfMonth === '*'|| dayOfMonth == date.getDate()){
        flag = true
    }else{
        return false
    }
    if(month === '*'|| month == date.getMonth()+1){
        flag = true
    }else{
        return false
    }
    if(dayWeek === '*'){
        flag = true
    }else if(dayWeek === 7 && date.getDay === 0){
        flag = true
    }else if(date.getDay !== 0 && Number(dayWeek) === date.getDay()){
        flag = true
    }else{
        // console.log(date.getDay(),'-',dayWeek)
        return false
    }
    return flag
}