+<meta name="keywords" content="Javascript, guide, open-sourced ,决定,,0,,2,,3,,#,,Event,,接口,,事件,,机制,,无时无刻,,伴随着,,Javascript,,开发,,。,,在,,浏览器,,环境,,里,,有,,各种各样,,的,,正是,,这些,,驱动,,着,,脚本,,运行,,也是,,一个,,标准,,观察者,,模式,,（,,Observer,,Pattern,,）,,应用,,通过,,抽象,,出,,订阅,,者,,Subscriber,,和,,发布者,,Publisher,,来,,达到,,接偶,,某个,,事物,,目的,,这样,,一种,,普遍的,,设计,,，,,不仅仅,,可以,,用,,DOM,,应用程序,,也,,构建,,自己,,模型,,产生,,自定义,,推动,,进行,,例如,,`,,Backbone,,.,,就是,,常见的,,EventEmitter,,实现,,它,,允许,,任何,,对象,,派发,,而,,不,,局限,,于,,中的,,文档,,元素,,作为,,中,,最,,完善,,复杂的,,自然,,是,,程序员,,首先,,要,,掌握,,概述,,EventTarget,,节点,,内,,传播,,或,,总是,,沿着,,其,,附,,所,,构成,,有序,,列表,,编程,,时时,,源头,,很多,,同时,,存在,,多种,,形式,,从事,,件,,看,,拥有,,能够,,接受,,都,,了,,下面,,这,,三个方,,法,,大家,,应该,,陌生,,addEventListener,,(,,),,removeEventListener,,dispatchEvent,,大多,,有如,,下,,继承,,状态,,:,,-,,>,,Node,,|,,Element,,HTMLElement,,Document,,如上所述,,素,,我们,,获取,,都是,,相关,,方法,,但,,由于,,历史,,原因,,大量,,时期,,即,,没有,,标准化,,代码,,使用,,以下,,两种,,办法,,注册,,监听,,：,,*,,HTML,,属性,,<,,button,,onclick,,=,,",,alert,,',,Hello,,world,,!,,myButton,,function,,event,,{,,;,,},,调用,,需要,,遵循,,该,,行为,,自动,,相应,,整个,,流程,,如下,,1,,时间,,路径,,将要,,组成,,里面,,这个,,最后,,一点,,Target,,本身,,之前,,祖先,,[,,Flow,,],,eventflow,,png,,关于,,两个,,特性,,一旦,,被,,确定,,即使,,后续,,操作,,改变,,结构,,不会,,影响,,内容,,更,,处理,,函数,,callback,,、,,handler,,subscriber,,过程,,出现,,捕获,,异常,,也不,,会,,三个,,阶段,,capture,,phase,,目标,,target,,冒泡,,bubble,,标记,,bubbles,,描述,,是否,,经历,,eventPhase,,正在,,正,,处于,,哪个,,对,,stopPropagation,,阻止,,继续,,接着,,上,,每个,,listeners,,此时,,按照,,条件,,向,,哪些,,stopImmediatePropagation,,立刻,,停止,,的确,,pahase,,类型,,type,,当,,完成,,所有,,周期,,后,,currentTarget,,必须,,设置,,为,,null,,其他,,保持,,不变,,可,,递归,,如果,,要求,,新的,,新,,同步,,执行,,并且,,只有,,完毕,,才,,默认,,preventDefault,,通常,,包含,,有一些,,取消,,抛弃,,就,,那么,,后果,,将,,重置,,cancelable,,；,,defaultPrevented,,已经,,返回,,值,,反应,,激活,,Activataion,,用户,,或者,,另外,,连带,,触发,,比较,,而且,,大多数,,不支持,,但是,,聚焦,,Focused,,链接,,敲击,,Enter,,键,,页面,,跳转,,重新,,定位,,Activation,,Trigger,,keydown,,Behavior,,有趣的,,并,,不是,,由,,click,,模拟,,鼠标,,左,,点击,,除了,,keypress,,之外,,还,,想象,,一下,,语音,,控制,,触屏,,交互,,网页,,浏览,,场景,,做法,,有道理,,保证,,大,,兼容性,,可信,,发生,,变化,,DocumentEvent,,createEvent,,创建,,initEvent,,初始化,,以及,,合成,,不可信,,isTrusted,,大部分,,不允许,,DOMActivate,,除外,,模块,,常见,,分类,,UIEvent,,MouseEvent,,WheelEvent,,KeyboardEvent,,CompositionEvent,,InputEvent,,FocusEvent,,参考,,http://www.w3.org/TR/DOM-Level-3-Events,,http://www.w3.org/html/wg/drafts/html/master/webappapis.html#event-handler-attributes">
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