getElementsByClassName returns [] instead of asynchronous appended node

Question

(I ask my question again after the first one was terribly formulated)

I face the following problem:

Answer 1

Please describe what you are doing with the returned results. There is a significant difference between a nodeList and a node, nodeLists are LIVE.

So if you assign a nodeList returned by getElementsByClassName() (or similar) to a variable, this variable will change when you remove the nodes inside the nodeList from the DOM.