多个固定时间点，检测是否到下个时间点，执行任务[非倒计时执行任务]

/**
 * 检测是否能够刷新
 * @param timeArray 刷新时间小时数组
 * @param lastTime 上次的执行时间戳
 * @returns {boolean}
 */
function checkRefreshAble(timeArray, lastTime){
    var date = new Date(lastTime);
    var hour = date.getHours();
    var nextHour ;
    for(var i = 0 ; i < timeArray.length; i++){
        if(timeArray[i] > hour){
            nextHour = timeArray[i];
            break;
        }
    }
    console.log('timeArray--->>',timeArray);

    var currHour = new Date().getHours();
    console.log('currHour:',currHour,' lastHour : ', hour, ' nextHour:',nextHour);
    if(!nextHour){
        nextHour = timeArray[0];
        return currHour >= nextHour && currHour < timeArray[timeArray.length - 1];
    }

    return(currHour >= nextHour);
}

测试

var obj = {
    time  :   0
}
var timeArray = [0,4,12]; //每天凌晨 4点 12点执行任务
setInterval(function () {
	//检测是否能够执行
    var res = checkRefreshAble(timeArray, obj.time);
    if(res){
        console.log('refresh---->>>');
		//todo 执行任务
        obj.time = Date.now();
    }
},2000);