4.dos In search of/undertaking a list (aka NodeList) off element nodes
Using the classList.contains() method its possible to determine (boolean) if a class attribute value contains a specific sub-value. In the code below we test weather the
class attribute contains a sub-value of 
brown.
brown.step three.twelve Delivering Form studies-* qualities
The fresh dataset property regarding a great feature node brings an object with most of the options that come with an element one to starts with studies-*. Since its a just good JavaScript target we are able to affect dataset and also have the element in the brand new DOM mirror those individuals change
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