Dom class attribute

class is not really a attribute, that's why we cannot get it by using GetAttribute() method. 

The only reason of using class is applying css to a dom object. How about style attribute and id attribute?

Id should be a real attribute although it can be used to apply css. It's a identify of a dom object. we can use GetElementByID to get a dom object. 

We can use style= to specify css for dom objects. style may not be a real attribute either. 

All by guessing :)

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Feng