CODEWITHSUNDEEP
javascriptyoutube-api
anita
anita

Reputation: 193

Not able to addEventlistner?

I seem to be having an issue adding an eventlistner to my YT.player. 

var ytapi = document.createElement('script');
ytapi.src = "https://ww" + "w.youtube" + ".com/iframe_api";
var scriptref = document.getElementsByTagName('script')[0];
scriptref.parentNode.insertBefore(ytapi, scriptref);
window.players = [];

function onPlayerStateChange(event) {
    switch(event.data) {
        case YT.PlayerState.ENDED:
            alert('VIDEO IS ENDED');

        case YT.PlayerState.CUED:
            alert('VIDEO IS CUED');

        case YT.PlayerState.PAUSED:
            alert('VIDEO IS PAUSED'); 
            break;
    }
};

window.onYouTubeIframeAPIReady = function() {
    jQuery('iframe[src*="youtube.com"]').each(function() {
        var id = jQuery(this).attr('id');
        window.players[id] = new YT.Player(id);
        window.players[id].addEventListener('onStateChange','onPlayerStateChange');
    });
};

OnStateChange is not being triggered, but

If i in the browser console do 

window.players[id].addEventListener('onStateChange','test');
function test(event){alert(event.data)};

It works?

Aren't I doing the exact same in the code? so why does it only work in console?

Upvotes: 0

Views: 47

Answers (1)

Christian Vincenzo Traina
Christian Vincenzo Traina

Reputation: 10384

That happens because addEventListener(<string>, <string>) isn't a function, as stated here.

As you can read, about the second parameter of the method:

This must be an object implementing the EventListener interface, or a JavaScript function. See The event listener callback for details on the callback itself.

So a string isn't accepted. Probably you meant to pass the test function variable reference, and not the test string.

So, just drop quotes:

addEventListener('onStateChange', test);

Note: Some javascript functions also accept strings in place of functions, such as eval and setTimeout. But the use is discouraged

Upvotes: 1

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