Observing changes to attributes

In this example, clicking the Toggle class / data button will toggle a 'modded' class on our div element, and switch the data-config attribute between two values. However, in this case, we've added an attributeFilter to only observe the class attribute. You should see an array containing two MutationRecord objects. Notice that we don't have a mutation record for the data-config attribute.

Open the developer console to examine changes between states.

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