Simple Loop Youtube by Minh Phong

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(function () {
    function simpleLoop(startTime, endTime) {
        // TODO: Check valid endtime
        console.log('-- Run here')
        var ytplayer = document.getElementById("movie_player");
        var currentTime = ytplayer.getCurrentTime();
        var isRunToStart = currentTime > startTime
        var suitableTimeout = endTime - startTime

if (currentTime <= startTime || currentTime > endTime) {
            ytplayer.seekTo(startTime)
        } else {
            suitableTimeout = endTime - currentTime
        }
        console.log('>> Start timeout after: ', suitableTimeout * 1000)
        setTimeout(function () {
            simpleLoop(startTime, endTime)
        }, suitableTimeout * 1000)
    }

var savedTimerange = localStorage.getItem('simple_loop_' + location.href);
    var input = prompt('Time range: start,end', savedTimerange || '');
    if (!input) {
        return;
    }
    localStorage.setItem('simple_loop_' + location.href, input);

var arr = input.split(',');

simpleLoop(parseInt(arr[0]), parseInt(arr[1]));
})();