Firefox JavaScript parameters passed to function are undefined on event









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I see some questions previously asked on this topic but have either not been answered or I don't understand the answer.



Why does the following work in ALL browsers except FireFox? When the onplay() event fires, the parameter passed is undefined.



<html>
<head><title></title>
</head>
<body>
<audio id="audioplayer" name="player1" preload="none" onplay="audioStarted(audioplayer[0]);" src="http://kerkradio.co.za:8000/audio/beste-luisteraar.mp3?a=1" controls> </audio><br/>
<audio id="audioplayer" name="player2" preload="none" onplay="audioStarted(audioplayer[1]);" src="http://kerkradio.co.za:8000/audio/beste-luisteraar.mp3?a=2" controls> </audio><br/>
<audio id="audioplayer" name="player3" preload="none" onplay="audioStarted(audioplayer[2]);" src="http://kerkradio.co.za:8000/audio/beste-luisteraar.mp3?a=3" controls> </audio><br/>
<audio id="audioplayer" name="player4" preload="none" onplay="audioStarted(audioplayer[3]);" src="http://kerkradio.co.za:8000/audio/beste-luisteraar.mp3?a=4" controls> </audio><br/>
</body>

<script>
function audioStarted(thePlayer) alert(thePlayer.src);
</script>
</html>









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  • You have multiple elements with the same id, which is invalid, and you're passing a variable that's undefined in the code you show, and you're trying to access a property of that variable. What are you trying to do?
    – David Thomas
    Nov 10 at 7:48










  • Hi Thomas. I am aware of the multiple elements with the same name, hence passing the index counter i.e. audioplayer[0]. Works very well except in FireFox. Have a look at what I am really trying to accomplish here: kerkradio.co.za The code example just simplified what the problem is.
    – Sytze Visser
    Nov 10 at 9:11















up vote
0
down vote

favorite












I see some questions previously asked on this topic but have either not been answered or I don't understand the answer.



Why does the following work in ALL browsers except FireFox? When the onplay() event fires, the parameter passed is undefined.



<html>
<head><title></title>
</head>
<body>
<audio id="audioplayer" name="player1" preload="none" onplay="audioStarted(audioplayer[0]);" src="http://kerkradio.co.za:8000/audio/beste-luisteraar.mp3?a=1" controls> </audio><br/>
<audio id="audioplayer" name="player2" preload="none" onplay="audioStarted(audioplayer[1]);" src="http://kerkradio.co.za:8000/audio/beste-luisteraar.mp3?a=2" controls> </audio><br/>
<audio id="audioplayer" name="player3" preload="none" onplay="audioStarted(audioplayer[2]);" src="http://kerkradio.co.za:8000/audio/beste-luisteraar.mp3?a=3" controls> </audio><br/>
<audio id="audioplayer" name="player4" preload="none" onplay="audioStarted(audioplayer[3]);" src="http://kerkradio.co.za:8000/audio/beste-luisteraar.mp3?a=4" controls> </audio><br/>
</body>

<script>
function audioStarted(thePlayer) alert(thePlayer.src);
</script>
</html>









share|improve this question





















  • You have multiple elements with the same id, which is invalid, and you're passing a variable that's undefined in the code you show, and you're trying to access a property of that variable. What are you trying to do?
    – David Thomas
    Nov 10 at 7:48










  • Hi Thomas. I am aware of the multiple elements with the same name, hence passing the index counter i.e. audioplayer[0]. Works very well except in FireFox. Have a look at what I am really trying to accomplish here: kerkradio.co.za The code example just simplified what the problem is.
    – Sytze Visser
    Nov 10 at 9:11













up vote
0
down vote

favorite









up vote
0
down vote

favorite











I see some questions previously asked on this topic but have either not been answered or I don't understand the answer.



Why does the following work in ALL browsers except FireFox? When the onplay() event fires, the parameter passed is undefined.



<html>
<head><title></title>
</head>
<body>
<audio id="audioplayer" name="player1" preload="none" onplay="audioStarted(audioplayer[0]);" src="http://kerkradio.co.za:8000/audio/beste-luisteraar.mp3?a=1" controls> </audio><br/>
<audio id="audioplayer" name="player2" preload="none" onplay="audioStarted(audioplayer[1]);" src="http://kerkradio.co.za:8000/audio/beste-luisteraar.mp3?a=2" controls> </audio><br/>
<audio id="audioplayer" name="player3" preload="none" onplay="audioStarted(audioplayer[2]);" src="http://kerkradio.co.za:8000/audio/beste-luisteraar.mp3?a=3" controls> </audio><br/>
<audio id="audioplayer" name="player4" preload="none" onplay="audioStarted(audioplayer[3]);" src="http://kerkradio.co.za:8000/audio/beste-luisteraar.mp3?a=4" controls> </audio><br/>
</body>

<script>
function audioStarted(thePlayer) alert(thePlayer.src);
</script>
</html>









share|improve this question













I see some questions previously asked on this topic but have either not been answered or I don't understand the answer.



Why does the following work in ALL browsers except FireFox? When the onplay() event fires, the parameter passed is undefined.



<html>
<head><title></title>
</head>
<body>
<audio id="audioplayer" name="player1" preload="none" onplay="audioStarted(audioplayer[0]);" src="http://kerkradio.co.za:8000/audio/beste-luisteraar.mp3?a=1" controls> </audio><br/>
<audio id="audioplayer" name="player2" preload="none" onplay="audioStarted(audioplayer[1]);" src="http://kerkradio.co.za:8000/audio/beste-luisteraar.mp3?a=2" controls> </audio><br/>
<audio id="audioplayer" name="player3" preload="none" onplay="audioStarted(audioplayer[2]);" src="http://kerkradio.co.za:8000/audio/beste-luisteraar.mp3?a=3" controls> </audio><br/>
<audio id="audioplayer" name="player4" preload="none" onplay="audioStarted(audioplayer[3]);" src="http://kerkradio.co.za:8000/audio/beste-luisteraar.mp3?a=4" controls> </audio><br/>
</body>

<script>
function audioStarted(thePlayer) alert(thePlayer.src);
</script>
</html>






javascript firefox undefined






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asked Nov 10 at 7:45









Sytze Visser

61




61











  • You have multiple elements with the same id, which is invalid, and you're passing a variable that's undefined in the code you show, and you're trying to access a property of that variable. What are you trying to do?
    – David Thomas
    Nov 10 at 7:48










  • Hi Thomas. I am aware of the multiple elements with the same name, hence passing the index counter i.e. audioplayer[0]. Works very well except in FireFox. Have a look at what I am really trying to accomplish here: kerkradio.co.za The code example just simplified what the problem is.
    – Sytze Visser
    Nov 10 at 9:11

















  • You have multiple elements with the same id, which is invalid, and you're passing a variable that's undefined in the code you show, and you're trying to access a property of that variable. What are you trying to do?
    – David Thomas
    Nov 10 at 7:48










  • Hi Thomas. I am aware of the multiple elements with the same name, hence passing the index counter i.e. audioplayer[0]. Works very well except in FireFox. Have a look at what I am really trying to accomplish here: kerkradio.co.za The code example just simplified what the problem is.
    – Sytze Visser
    Nov 10 at 9:11
















You have multiple elements with the same id, which is invalid, and you're passing a variable that's undefined in the code you show, and you're trying to access a property of that variable. What are you trying to do?
– David Thomas
Nov 10 at 7:48




You have multiple elements with the same id, which is invalid, and you're passing a variable that's undefined in the code you show, and you're trying to access a property of that variable. What are you trying to do?
– David Thomas
Nov 10 at 7:48












Hi Thomas. I am aware of the multiple elements with the same name, hence passing the index counter i.e. audioplayer[0]. Works very well except in FireFox. Have a look at what I am really trying to accomplish here: kerkradio.co.za The code example just simplified what the problem is.
– Sytze Visser
Nov 10 at 9:11





Hi Thomas. I am aware of the multiple elements with the same name, hence passing the index counter i.e. audioplayer[0]. Works very well except in FireFox. Have a look at what I am really trying to accomplish here: kerkradio.co.za The code example just simplified what the problem is.
– Sytze Visser
Nov 10 at 9:11













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That it works at all (which I guess it might) is an aberration brought about from javascript's weird hoisting of id's to the global scope (making getElementById oddly redundant). Firefox is quite right to cough this code back up, and I'd be surprised if it really were the case that it works in all other browsers



Try passing the keyword this instead of that audioplayer[n] jive - yours is the sort of situation that this was designed to handle






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    up vote
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    That it works at all (which I guess it might) is an aberration brought about from javascript's weird hoisting of id's to the global scope (making getElementById oddly redundant). Firefox is quite right to cough this code back up, and I'd be surprised if it really were the case that it works in all other browsers



    Try passing the keyword this instead of that audioplayer[n] jive - yours is the sort of situation that this was designed to handle






    share|improve this answer
























      up vote
      0
      down vote













      That it works at all (which I guess it might) is an aberration brought about from javascript's weird hoisting of id's to the global scope (making getElementById oddly redundant). Firefox is quite right to cough this code back up, and I'd be surprised if it really were the case that it works in all other browsers



      Try passing the keyword this instead of that audioplayer[n] jive - yours is the sort of situation that this was designed to handle






      share|improve this answer






















        up vote
        0
        down vote










        up vote
        0
        down vote









        That it works at all (which I guess it might) is an aberration brought about from javascript's weird hoisting of id's to the global scope (making getElementById oddly redundant). Firefox is quite right to cough this code back up, and I'd be surprised if it really were the case that it works in all other browsers



        Try passing the keyword this instead of that audioplayer[n] jive - yours is the sort of situation that this was designed to handle






        share|improve this answer












        That it works at all (which I guess it might) is an aberration brought about from javascript's weird hoisting of id's to the global scope (making getElementById oddly redundant). Firefox is quite right to cough this code back up, and I'd be surprised if it really were the case that it works in all other browsers



        Try passing the keyword this instead of that audioplayer[n] jive - yours is the sort of situation that this was designed to handle







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Nov 10 at 10:07









        lucas

        850717




        850717



























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