dom操作
"dojo/dom" ：
node = dom.byId(node);
"dojo/dom-construct"：
domConstruct.place
domConstruct.create
domConstruct.destroy
domConstruct.empty
”dojo/_base/fx“
animateProperty,
anim,
fadeIn,
fadeOut
"dojo/fx"
chain
combine
wipeIn
wipeOut
slideTo
"dojo/on"
on(myButton, "click", function(evt){
domStyle.set(myDiv, "backgroundColor", "blue");
});
on(element,event name,handler)
