method summary:

• get(node,name)Gets an attribute on an HTML element.
• getNodeProp(node,name)Returns an effective value of a property or an attribute.
• has(node,name)Returns true if the requested attribute is specified on the given element,and false otherwise.
• remove(node,name)Removes an attribute from an HTML element.
• set(node,name,value)Sets an attribute on an HTML element.

来源于dojo官网：http://dojotoolkit.org.sixxs.org/api/1.9/dojo/dom-attr