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event

时间:2014-11-24 16:35:54      阅读:209      评论:0      收藏:0      [点我收藏+]

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1.事件流;
  捕获(ie部分不支持);
  冒泡(有些事件不支持冒泡 => 例: focus);
2.事件处理;事件监听器;
  element.on{EventName};
  element.addEventListener / element.removeEventListener;
  element.attachEvent / element.datachEvent;- ie专用;
3.时间代理;利用冒泡特性;
  document.onclick = function (e){
    var e = e || window.event;
    var target = e.target || e.srcElement;
    if (target.className == ‘className‘){
      alert(‘Hello World!‘);
    }
  }
4.event对象;
  event = > 标准浏览器中作为参数传递;
  window.event => 在ie中; 当event结束时被销毁;
5.事件类型;
  event.type = > mousedown/ mouseup/keydown/ keyup....;
6.触发事件的节点对象;
  e.target => 标准浏览器中;
  e.srcElement => 只存在与巨硬的浏览器之中;
7.阻止默认行为;
  当 cancelable 属性为 true 时, event.preventDefault(); 才有效.
  当 event.preventDefault(); 调用后, event.defaultPrevented; 为 Ture.
  event.preventDefault();
  event.returnValue = true; - ie
  兼容代码:
  event.preventDefault = event.preventDefault || function(){event.returnValue = true};
8.阻止事件冒泡;
  event.stopPropergation();
  event.cancelBubble = true; - ie;
9.组织后续事件处理函数和冒泡;
  event.stopImmediatePropagation();
10.功能键;
  altKey;
  shiftKey;
  ctrlKey;
  metaKey; => ie 9 以下不支持;
11.others
  event.bubbles => 事件是否是冒泡上来的;
  event.isTruest - 是否是用户操作行为;
  event.timeStamp;
12.事件类型;
  Load(DOMCountentLoaded -IE9+;readystatechage- document.readystate[loading/loaded/interactive/complete];load;beforeunload;unload;abort;error;)
  Control{focus-> 不冒泡; blur -> 不冒泡; focusin; focusout;select;change;resize;scroll;submit;reset;zoom}
  Mouse{mouseenter->mousedown->mouseup->click->dbclick->mousemove->mouseleave->mouseover->mouseout->contextMenu}
  Keyboard{keydown keyup keypress input}
  DomMutation{DOMActivate;DOMFocusInDOMFocusOut;DOMAttrModified;DOMCharacterDataModified;DOMNodeInserted;DOMNodeInsertedIntoDocument;DOMNodeRemoved;DOMNodeRemovedFromDocument;DOMSubtreeModified;DOMContentLoaded}
13.光标位置;
  clientX/clientY; -> 相对于 window;
  pageX/pageY; -> 相对于document; ie8不支持;自己算吧,亲;
  screenX/screenY ->相对于屏幕;

event

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原文地址:http://www.cnblogs.com/clearfix/p/4118679.html

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