dojo/dom-class用法

Method Summary 

• add(node, classStr) Adds the specified classes to the end of the class list on the passed node.
• contains(node, classStr) Returns whether or not the specified classes are a portion of the class list currently applied to the node.
• remove(node, classStr) Removes the specified classes from node.
• replace(node, addClassStr, removeClassStr) Replaces one or more classes on a node if not present.
• toggle(node, classStr, condition) Adds a class to node if not present, or removes if present.