轮询检查结果， 下次轮询时长为之前 1.5 倍

delayCheck.js

function delay(time, fn) {
    return new Promise(function(resolve, reject){
        function fun () {
            resolve(fn())
        }
        setTimeout(fun, time);
    });
}

function checkRes(time = 1000) {
    let res = false
    if (time > 4000) {
        res = true;
    }
    let p = delay(time, () => (res))
    p.then(e => {
        if (!e) {
            checkRes(time * 1.5)
        } else {
            console.log('finished')
        }
    })
}

checkRes()