Question

33

It says that TypeError: document.getElementById(...) is null

rated 0 times [ 35] [ 2] / answers: 1 / hits: 170290 / 12 Years ago, fri, december 14, 2012, 12:00:00

Althought I pushed a parameter to getElementById I wonder from where is this 'is null' error coming from?

TypeError: document.getElementById(...) is null

[Break On This Error]   



document.getElementById(elmId).innerHTML = value;



Line 75

In addition to this i wonder why title and time did not show unless I click one of these playlist pictures?

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2 Years ago

answered 12 Years ago taliac · Accepted Answer

All these results in null:

document.getElementById('volume');

document.getElementById('bytesLoaded');

document.getElementById('startBytes');

document.getElementById('bytesTotal');

You need to do a null check in updateHTML like this:

function updateHTML(elmId, value) {

  var elem = document.getElementById(elmId);

  if(typeof elem !== 'undefined' && elem !== null) {

    elem.innerHTML = value;

  }

}