I am attempting to retrieve the offsetHeight of an element but I keep getting undefined.
When I use this code, it returns an HTML collection and everything works correctly:
document.getElementsByClassName("plyr--full-ui");
However, when I add .offsetHeight, I get undefined:
document.getElementsByClassName("plyr--full-ui").offsetHeight;
What am I doing wrong?
When it comes to HTMLCollection, it behaves like an array-like object. To retrieve the offsetHeight of the first element, you can use this code:
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