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
type Bubbling phase Cancelable Target node types DOM interface
Yes Yes Element
Yes No Element
Yes No Element
No No Element
No No Element
Yes Yes Element
Yes Yes Element
Yes Yes Element
Yes Yes Element
Yes Yes Element
Yes Yes Element
Yes Yes Element
Yes Yes Element
Yes Yes Element
Yes Yes Element
Yes Yes Document, Element
Yes Yes Document, Element
Yes No Document, DocumentFragment, Element, Attr
Yes No Element, Attr, Text, Comment, CDATASection, DocumentType, EntityReference, ProcessingInstruction
Yes No Element, Attr, Text, Comment, CDATASection, DocumentType, EntityReference, ProcessingInstruction
No No Element, Attr, Text, Comment, CDATASection, DocumentType, EntityReference, ProcessingInstruction
No No Element, Attr, Text, Comment, CDATASection, DocumentType, EntityReference, ProcessingInstruction
Yes No Element
Yes No Text, Comment, CDATASection, ProcessingInstruction
Yes No Element
Yes No Element
No No Document, Element
No No Document, Element
Yes No Element
Yes No Element
Yes No Element
Yes No Element
Yes Yes Element
Yes Yes Element
Yes No Document, Element
Yes No Document, Element
作者:Ruby's Louvre
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