Returns the number of objects in this list.
The valid indices for a list are 0 through length - 1.
Source
@DomName('HTMLCollection.length')
@DocsEditable()
int get length => _blink.BlinkHTMLCollection.instance.length_Getter_(this);
Changes the length of this list.
If newLength is greater than
the current length, entries are initialized to null.
Throws an UnsupportedError if the list is fixed-length.
Source
set length(int value) {
throw new UnsupportedError("Cannot resize immutable List.");
}