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Start your free trialdavid marjanac
4,851 Pointswhy you put in var=button array [0]
dont know why ther is [0] in var addButton=document.getElementByTagName("button")[0];
1 Answer
Robert Karlsson
8,021 PointsFrom the getElementsByTagName-method you get a nodelist back with all matching elements. The [0] at the end gives you the first element in the list.
An example of a method that doesn't need the [0] at the end is the getElementById, since it only returns a single element, instead of a list of elements.