绑定事件
复制代码 代码如下:
var addEvent = function( obj, type, fn ) {
if (obj.addEventListener)
obj.addEventListener( type, fn, false );
else if (obj.attachEvent) {
obj["e"+type+fn] = fn;
obj.attachEvent( "on"+type, function() {
obj["e"+type+fn]();
} );
}
};

另一个实现
复制代码 代码如下:
var addEvent = (function () {
if (document.addEventListener) {
return function (el, type, fn) {
el.addEventListener(type, fn, false);
};
} else {
return function (el, type, fn) {
el.attachEvent('on' + type, function () {
return fn.call(el, window.event);
});
}
}
})();

绑定onpropertychange事件

onpropertychange是微软制造的一个事件，它在一个元素的属性发生变化的时候触发，常见的有文本的长度改变，样长改变等，FF大致和它相似的属性为oninput事件，不过它只针对textfield与textarea的value属性。safari，firefox，chrome与 opera都支持此属性。
复制代码 代码如下:
var addPropertyChangeEvent = function (obj,fn) {
if(window.ActiveXObject){
obj.onpropertychange = fn;
}else{
obj.addEventListener("input",fn,false);
}
}

移除事件
复制代码 代码如下:
var removeEvent = function( obj, type, fn ) {
if (obj.removeEventListener)
obj.removeEventListener( type, fn, false );
else if (obj.detachEvent) {
obj.detachEvent( "on"+type, obj["e"+type+fn] );
obj["e"+type+fn] = null;
}
};

加载事件
复制代码 代码如下:
var loadEvent = function(fn) {
var oldonload = window.onload;
if (typeof window.onload != 'function') {
window.onload = fn;
}else {
window.onload = function() {
oldonload();
fn();
}
}
}

阻止事件
复制代码 代码如下:
var stopEvent = function(e){
e = e || window.event;
if(e.preventDefault) {
e.preventDefault();
e.stopPropagation();
}else{
e.returnValue = false;
e.cancelBubble = true;
}
}

如果仅仅是阻止事件冒泡
复制代码 代码如下:
var stopPropagation = function(e) {
e = e || window.event;
if (!+"\v1") {
e.cancelBubble = true;
} else {
e.stopPropagation();
}
}

取得事件源对象

相当于Prototype.js框架的Event.element(e)
复制代码 代码如下:
var getEvent = function(e){
e = e || window.event;
var target = event.srcElement ? event.srcElement : event.target;
return target
}

或者这个功能更强大，我在开发datagrid时开发出来的，详细用法见《一步步教你实现表格排序（第二部分）》。
复制代码 代码如下:
var getEvent = function(e) {
var e = e || window.event;
if (!e) {
var c = this.getEvent.caller;
while (c) {
e = c.arguments[0];
if (e && (Event == e.constructor || MouseEvent == e.constructor)) {
break;
}
c = c.caller;
}
}
var target = e.srcElement ? e.srcElement : e.target,
currentN = target.nodeName.toLowerCase(),
parentN = target.parentNode.nodeName.toLowerCase(),
grandN = target.parentNode.parentNode.nodeName.toLowerCase();
return [e,target,currentN,parentN,grandN];
}

最后附上DOM3.0事件的一览表
typeBubbling phaseCancelableTarget node typesDOM interfaceDOMActivateYesYesElementUIEventDOMFocusInYesNoElementUIEventDOMFocusOutYesNoElementUIEventfocusNoNoElementUIEventblurNoNoElementUIEventtextInputYesYesElementTextEventclickYesYesElementMouseEventdblclickYesYesElementMouseEventmousedownYesYesElementMouseEventmouseupYesYesElementMouseEventmouseoverYesYesElementMouseEventmousemoveYesYesElementMouseEventmouseoutYesYesElementMouseEventkeydownYesYesElementKeyboardEventkeyupYesYesElementKeyboardEventmousemultiwheelYesYesDocument, ElementMouseMultiWheelEventmousewheelYesYesDocument, ElementMouseWheelEventDOMSubtreeModifiedYesNoDocument, DocumentFragment, Element, AttrMutationEventDOMNodeInsertedYesNoElement, Attr, Text, Comment, CDATASection, DocumentType, EntityReference, ProcessingInstructionMutationEventDOMNodeRemovedYesNoElement, Attr, Text, Comment, CDATASection, DocumentType, EntityReference, ProcessingInstructionMutationEventDOMNodeRemovedFromDocumentNoNoElement, Attr, Text, Comment, CDATASection, DocumentType, EntityReference, ProcessingInstructionMutationEventDOMNodeInsertedIntoDocumentNoNoElement, Attr, Text, Comment, CDATASection, DocumentType, EntityReference, ProcessingInstructionMutationEventDOMAttrModifiedYesNoElementMutationEventDOMCharacterDataModifiedYesNoText, Comment, CDATASection, ProcessingInstructionMutationEventDOMElementNameChangedYesNoElementMutationNameEventDOMAttributeNameChangedYesNoElementMutationNameEventloadNoNoDocument, ElementEventunloadNoNoDocument, ElementEventabortYesNoElementEventerrorYesNoElementEventselectYesNoElementEventchangeYesNoElementEventsubmitYesYesElementEventresetYesYesElementEventresizeYesNoDocument, ElementUIEventscrollYesNoDocument, ElementUIEvent作者:Ruby's Louvre