addEventListener only triggers for first event

Question

I am wondering why the following does work:

//maak variabelen aan
        var video = document.getElementById('video');
        var show = 100;
        var hide = 99;

    video.addEventListener("timeupdate", function() {
        if (video.currentTime >=show){
            showPlaceHolder();
        }

        if (video.currentTime <=hide){
            hidePlaceHolder();
        }
            }, false);

But for the following code only the first event triggers? :

var bvideo = document.getElementById('background');
var boombegin = 0;
var boomeind = 7;
var autoeind = 13;
var wolkbegin = 13;
var wolkeind = 19;

   bvideo.addEventListener("timeupdate", function() {
        if (bvideo.currentTime <=boombegin){
            document.getElementById('boom').style.visibility = 'visible';
            document.getElementById('wolk').style.visibility = 'hidden';
            document.getElementById('car').style.visibility = 'hidden';
        }

        if (bvideo.currentTime >=boomeind){
            document.getElementById('boom').style.visibility = 'hidden';
            document.getElementById('car').style.visibility = 'visible';
        }

        if (bvideo.currentTime >=autoeind){
            document.getElementById('car').style.visibility = 'hidden';
        }

        if (bvideo.currentTime >= wolkbegin){
            document.getElementById('wolk').style.visibility = 'visible';
        }

        if (bvideo.currentTime >= wolkeind){
            document.getElementById('wolk').style.visibility = 'hidden';
        }
    }, false);

Is there anyone who knows why only the first event is being triggered?

I have tried the following for the addEventListener: Seconds, MS, setting alerts to check which events fired (only the first one does)

Answer 1

I forgot to edit the following lines: from:

  if (video.currentTime >= wolkeind){

to:

if (bvideo.currentTime >= wolkeind){

so it checked for the wrong event, thanks for the advice though.

Answer 2

The second element seems like a slideshow, does the current time update on the 2nd one?

also your 2nd if check will always evaluate true after the second call.