The HTMLCollection interface represents a generic collection (array-like object similar to Functions/arguments) of elements (in document order) and offers methods and properties for selecting from the list.
HTMLCollection
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The HTMLCollection.length property returns the number of items in a HTMLCollection.
HTMLCollection.length
The HTMLCollection method item() returns the element located at the specified offset into the collection.
item()
The
HTMLCollectioninterface represents a generic collection (array-like object similar to Functions/arguments) of elements (in document order) and offers methods and properties for selecting from the list.MDN Reference