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。
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
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
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
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
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)
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)》。
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 |
---|---|---|---|---|
DOMActivate | Yes | Yes | Element | UIEvent |
DOMFocusIn | Yes | No | Element | UIEvent |
DOMFocusOut | Yes | No | Element | UIEvent |
focus | No | No | Element | UIEvent |
blur | No | No | Element | UIEvent |
textInput | Yes | Yes | Element | TextEvent |
click | Yes | Yes | Element | MouseEvent |
dblclick | Yes | Yes | Element | MouseEvent |
mousedown | Yes | Yes | Element | MouseEvent |
mouseup | Yes | Yes | Element | MouseEvent |
mouseover | Yes | Yes | Element | MouseEvent |
mousemove | Yes | Yes | Element | MouseEvent |
mouseout | Yes | Yes | Element | MouseEvent |
keydown | Yes | Yes | Element | KeyboardEvent |
keyup | Yes | Yes | Element | KeyboardEvent |
mousemultiwheel | Yes | Yes | Document, Element | MouseMultiWheelEvent |
mousewheel | Yes | Yes | Document, Element | MouseWheelEvent |
DOMSubtreeModified | Yes | No | Document, DocumentFragment, Element, Attr | MutationEvent |
DOMNodeInserted | Yes | No | Element, Attr, Text, Comment, CDATASection, DocumentType, EntityReference, ProcessingInstruction | MutationEvent |
DOMNodeRemoved | Yes | No | Element, Attr, Text, Comment, CDATASection, DocumentType, EntityReference, ProcessingInstruction | MutationEvent |
DOMNodeRemovedFromDocument | No | No | Element, Attr, Text, Comment, CDATASection, DocumentType, EntityReference, ProcessingInstruction | MutationEvent |
DOMNodeInsertedIntoDocument | No | No | Element, Attr, Text, Comment, CDATASection, DocumentType, EntityReference, ProcessingInstruction | MutationEvent |
DOMAttrModified | Yes | No | Element | MutationEvent |
DOMCharacterDataModified | Yes | No | Text, Comment, CDATASection, ProcessingInstruction | MutationEvent |
DOMElementNameChanged | Yes | No | Element | MutationNameEvent |
DOMAttributeNameChanged | Yes | No | Element | MutationNameEvent |
load | No | No | Document, Element | Event |
unload | No | No | Document, Element | Event |
abort | Yes | No | Element | Event |
error | Yes | No | Element | Event |
select | Yes | No | Element | Event |
change | Yes | No | Element | Event |
submit | Yes | Yes | Element | Event |
reset | Yes | Yes | Element | Event |
resize | Yes | No | Document, Element | UIEvent |
scroll | Yes | No | Document, Element | UIEvent |