每个 event 都有一个 event.bubbles 属性，能够晓得它可否冒泡。(ref：W3 定义的 Event Interface)
当然 W3 DOM Level 3 Events 的细则里曾经附上这个表格了：
| Event Type | Bubbling phase |
|---|---|
| abort | × |
| beforeinput | √ |
| blur | × |
| click | √ |
| compositionstart | √ |
| compositionupdate | √ |
| compositionend | √ |
| dblclick | √ |
| error | × |
| focus | × |
| focusin | √ |
| focusout | √ |
| input | √ |
| keydown | √ |
| keyup | √ |
| load | × |
| mousedown | √ |
| mouseenter | × |
| mouseleave | × |
| mousemove | √ |
| mouseout | √ |
| mouseover | √ |
| mouseup | √ |
| resize | × |
| scroll | √ |
| select | √ |
| unload | × |
| wheel | √ |
Legacy Events（旧浏览器反对的非标准遗留事件）的 bubble 属性。
| Event Type | Bubbling phase |
|---|---|
| DOMActivate | √ |
| DOMAttrModified | √ |
| DOMCharacterDataModified | √ |
| DOMFocusIn | √ |
| DOMFocusOut | √ |
| DOMNodeInserted | × |
| DOMNodeInsertedIntoDocument | √ |
| DOMNodeRemoved | × |
| DOMNodeRemovedFromDocument | √ |
| DOMSubtreeModified | √ |
| keypress | √ |
H5 还定义了一些新事件：
- media 相干事件，都不冒泡
- drag 相干事件
dragstart、drag、dragenter、dragexit、dragleave、dragover、drop、dragend均冒泡 - History 相干事件：
popstate，hashchange冒泡（从 window 开始……所以意义在哪里），pagetransition不冒泡
还有很多 H5 新事件，大多在草案阶段，就不一一打开了。
此外，这里还有一个对于 IE 的事件列表,http://www.feiesoft.com/html/events.html
事件冒泡是咱们实现事件代理（委托）的要害，在 avalon1.6 中，默认让能冒泡的事件都应用事件代理实现了！var canBubbleUp = {
click: true`,`
dblclick: true`,`
keydown: true`,`
keypress: true`,`
keyup: true`,`
mousedown: true`,`
mousemove: true`,`
mouseup: true`,`
mouseover: true`,`
mouseout: true`,`
wheel: true`,`
mousewheel: true`,`
input: true`,`
change: true`,`
beforeinput: true`,`
compositionstart: true`,`
compositionupdate: true`,`
compositionend: true`,`
select: true`,`
cut: true`,`
paste:`true`,
focusin: true`,`
focusout: true`,`
DOMFocusIn: true`,`
DOMFocusOut: true`,`
DOMActivate: true`,`
dragend:`true`,
datasetchanged:`true`
}
if (!W3C) {
delete canBubbleUp.change
delete canBubbleUp.select
}
//....