javascript limited time interval using timeout

gistfile1.js

function setTimedOutInterval(totalTime, intervalTime, callBackFunction) {
    intervalId = setInterval(function () {
        console.log('check B');
        if (finished === true) {
            console.log('B finished = true');
            clearInterval(intervalId);
            callBackFunction();
        }
    }, intervalTime);

    var tmpDelayB = setTimeout(function () {
        clearInterval(intervalId);
        console.log('time out');
    }, totalTime);
}

setTimedOutInterval(4000, 500, finished);

function finished() {
    console.log('finished!!');
}