My point it that it is a defined behaviour of the DOM API which is generally implemented in C++ and exposed to Javascript environment. It behave exactly the sam

My point it that it is a defined behaviour of the DOM API which is generally implemented in C++ and exposed to Javascript environment. It behave exactly the same way if you use bindings for any other language. It's not an ECMAScript defined feature. You can also implement exactly this behaviour in any language so how is this then a Javascript language issue?