Uncaught Typeerror: cannot read property 'innerHTML' of null

Question

Can anyone explain what is theses errors?

Uncaught TypeError: cannot read property \'innerHTML\' of null

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Answer 1

I had a similar problem, but I had the existing id, and as egiray said, I was calling DOM before it loaded and Javascript console was showing the same error, so I tried:

window.onload = (function(){myfuncname()});

and it starts working.