As the comments of this interface indicate, you can access an attribute by either its name or its index.

正如本接口的注释所表明的，可以通过属性的名称或者其索引访问它。

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To read attributes, you stop at the start of an element and request a specific attribute, either by name or number.

若要读取属性，请停止在元素的起点处，通过名称或编号来请求特定属性。

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A method of a superclass can be extended by declaring an attribute with the same name.

超类的方法可以通过使用相同的名称声明属性来扩展。

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