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if (window.Event){ //  修正Event的DOM
     /*
                                IE5        MacIE5        Mozilla        Konqueror2.2        Opera5
    event                        yes        yes            yes            yes                    yes
    event.returnValue            yes        yes            no            no                    no
    event.cancelBubble            yes        yes            no            no                    no
    event.srcElement            yes        yes            no            no                    no
    event.fromElement            yes        yes            no            no                    no
    
    
*/
    Event.prototype.__defineSetter__(
" returnValue " , function (b){ //  
         if ( ! b) this .preventDefault();
        
return  b;
        });
    Event.prototype.__defineSetter__(
" cancelBubble " , function (b){ //  设置或者检索当前事件句柄的层次冒泡
         if (b) this .stopPropagation();
        
return  b;
        });
    Event.prototype.__defineGetter__(
" srcElement " , function (){
        
var  node = this .target;
        
while (node.nodeType != 1 )node = node.parentNode;
        
return  node;
        });
    Event.prototype.__defineGetter__(
" fromElement " , function (){ //  返回鼠标移出的源节点
         var  node;
        
if ( this .type == " mouseover " )
            node
= this .relatedTarget;
        
else   if ( this .type == " mouseout " )
            node
= this .target;
        
if ( ! node) return ;
        
while (node.nodeType != 1 )node = node.parentNode;
        
return  node;
        });
    Event.prototype.__defineGetter__(
" toElement " , function (){ //  返回鼠标移入的源节点
         var  node;
        
if ( this .type == " mouseout " )
            node
= this .relatedTarget;
        
else   if ( this .type == " mouseover " )
            node
= this .target;
        
if ( ! node) return ;
        
while (node.nodeType != 1 )node = node.parentNode;
        
return  node;
        });
    Event.prototype.__defineGetter__(
" offsetX " , function (){
        
return   this .layerX;
        });
    Event.prototype.__defineGetter__(
" offsetY " , function (){
        
return   this .layerY;
        });
    }
if (window.Document){ //  修正Document的DOM
     /*
                                IE5        MacIE5        Mozilla        Konqueror2.2        Opera5
    document.documentElement    yes        yes            yes            yes                    no
    document.activeElement        yes        null        no            no                    no
    
    
*/
    }
if (window.Node){ //  修正Node的DOM
     /*
                                IE5        MacIE5        Mozilla        Konqueror2.2        Opera5
    Node.contains                yes        yes            no            no                    yes
    Node.replaceNode            yes        no            no            no                    no
    Node.removeNode                yes        no            no            no                    no
    Node.children                yes        yes            no            no                    no
    Node.hasChildNodes            yes        yes            yes            yes                    no
    Node.childNodes                yes        yes            yes            yes                    no
    Node.swapNode                yes        no            no            no                    no
    Node.currentStyle            yes        yes            no            no                    no
    
    
*/
    Node.prototype.replaceNode
= function (Node){ //  替换指定节点
         this .parentNode.replaceChild(Node, this );
        }
    Node.prototype.removeNode
= function (removeChildren){ //  删除指定节点
         if (removeChildren)
            
return   this .parentNode.removeChild( this );
        
else {
            
var  range = document.createRange();
            range.selectNodeContents(
this );
            
return   this .parentNode.replaceChild(range.extractContents(), this );
            }
        }
    Node.prototype.swapNode
= function (Node){ //  交换节点
         var  nextSibling = this .nextSibling;
        
var  parentNode = this .parentNode;
        node.parentNode.replaceChild(
this ,Node);
        parentNode.insertBefore(node,nextSibling);
        }
    }
if (window.HTMLElement){
    HTMLElement.prototype.__defineGetter__(
" all " , function (){
        
var  a = this .getElementsByTagName( " * " );
        
var  node = this ;
        a.tags
= function (sTagName){
            
return  node.getElementsByTagName(sTagName);
            }
        
return  a;
        });
    HTMLElement.prototype.__defineGetter__(
" parentElement " , function (){
        
if ( this .parentNode == this .ownerDocument) return   null ;
        
return   this .parentNode;
        });
    HTMLElement.prototype.__defineGetter__(
" children " , function (){
        
var  tmp = [];
        
var  j = 0 ;
        
var  n;
        
for ( var  i = 0 ;i < this .childNodes.length;i ++ ){
            n
= this .childNodes[i];
            
if (n.nodeType == 1 ){
                tmp[j
++ ] = n;
                
if (n.name){
                    
if ( ! tmp[n.name])
                        tmp[n.name]
= [];
                    tmp[n.name][tmp[n.name].length]
= n;
                    }
                
if (n.id)
                    tmp[n.id]
= n;
                }
            }
        
return  tmp;
        });
    HTMLElement.prototype.__defineGetter__(
" currentStyle " function (){
        
return   this .ownerDocument.defaultView.getComputedStyle( this , null );
        });
    HTMLElement.prototype.__defineSetter__(
" outerHTML " , function (sHTML){
        
var  r = this .ownerDocument.createRange();
        r.setStartBefore(
this );
        
var  df = r.createContextualFragment(sHTML);
        
this .parentNode.replaceChild(df, this );
        
return  sHTML;
        });
    HTMLElement.prototype.__defineGetter__(
" outerHTML " , function (){
        
var  attr;
        
var  attrs = this .attributes;
        
var  str = " < " + this .tagName;
        
for ( var  i = 0 ;i < attrs.length;i ++ ){
            attr
= attrs[i];
            
if (attr.specified)
                str
+= "   " + attr.name + ' = " '+attr.value+' " ';
            }
        
if ( ! this .canHaveChildren)
            
return  str + " > " ;
        
return  str + " > " + this .innerHTML + " </ " + this .tagName + " > " ;
        });
    HTMLElement.prototype.__defineGetter__(
" canHaveChildren " , function (){
        
switch ( this .tagName.toLowerCase()){
            
case   " area " :
            
case   " base " :
            
case   " basefont " :
            
case   " col " :
            
case   " frame " :
            
case   " hr " :
            
case   " img " :
            
case   " br " :
            
case   " input " :
            
case   " isindex " :
            
case   " link " :
            
case   " meta " :
            
case   " param " :
                
return   false ;
            }
        
return   true ;
        });
 
    HTMLElement.prototype.__defineSetter__(
" innerText " , function (sText){
        
var  parsedText = document.createTextNode(sText);
        
this .innerHTML = parsedText;
        
return  parsedText;
        });
    HTMLElement.prototype.__defineGetter__(
" innerText " , function (){
        
var  r = this .ownerDocument.createRange();
        r.selectNodeContents(
this );
        
return  r.toString();
        });
    HTMLElement.prototype.__defineSetter__(
" outerText " , function (sText){
        
var  parsedText = document.createTextNode(sText);
        
this .outerHTML = parsedText;
        
return  parsedText;
        });
    HTMLElement.prototype.__defineGetter__(
" outerText " , function (){
        
var  r = this .ownerDocument.createRange();
        r.selectNodeContents(
this );
        
return  r.toString();
        });
    HTMLElement.prototype.attachEvent
= function (sType,fHandler){
        
var  shortTypeName = sType.replace( / on / , "" );
        fHandler._ieEmuEventHandler
= function (e){
            window.event
= e;
            
return  fHandler();
            }
        
this .addEventListener(shortTypeName,fHandler._ieEmuEventHandler, false );
        }
    HTMLElement.prototype.detachEvent
= function (sType,fHandler){
        
var  shortTypeName = sType.replace( / on / , "" );
        
if ( typeof (fHandler._ieEmuEventHandler) == " function " )
            
this .removeEventListener(shortTypeName,fHandler._ieEmuEventHandler, false );
        
else
            
this .removeEventListener(shortTypeName,fHandler, true );
        }
    HTMLElement.prototype.contains
= function (Node){ //  是否包含某节点
         do   if (Node == this ) return   true ;
        
while (Node = Node.parentNode);
        
return   false ;
        }
    HTMLElement.prototype.insertAdjacentElement
= function (where,parsedNode){
        
switch (where){
            
case   " beforeBegin " :
                
this .parentNode.insertBefore(parsedNode, this );
                
break ;
            
case   " afterBegin " :
                
this .insertBefore(parsedNode, this .firstChild);
                
break ;
            
case   " beforeEnd " :
                
this .appendChild(parsedNode);
                
break ;
            
case   " afterEnd " :
                
if ( this .nextSibling)
                    
this .parentNode.insertBefore(parsedNode, this .nextSibling);
                
else
                    
this .parentNode.appendChild(parsedNode);
                
break ;
            }
        }
    HTMLElement.prototype.insertAdjacentHTML
= function (where,htmlStr){
        
var  r = this .ownerDocument.createRange();
        r.setStartBefore(
this );
        
var  parsedHTML = r.createContextualFragment(htmlStr);
        
this .insertAdjacentElement(where,parsedHTML);
        }
    HTMLElement.prototype.insertAdjacentText
= function (where,txtStr){
        
var  parsedText = document.createTextNode(txtStr);
        
this .insertAdjacentElement(where,parsedText);
        }
    HTMLElement.prototype.attachEvent
= function (sType,fHandler){
        
var  shortTypeName = sType.replace( / on / , "" );
        fHandler._ieEmuEventHandler
= function (e){
            window.event
= e;
            
return  fHandler();
            }
        
this .addEventListener(shortTypeName,fHandler._ieEmuEventHandler, false );
        }
    HTMLElement.prototype.detachEvent
= function (sType,fHandler){
        
var  shortTypeName = sType.replace( / on / , "" );
        
if ( typeof (fHandler._ieEmuEventHandler) == " function " )
            
this .removeEventListener(shortTypeName,fHandler._ieEmuEventHandler, false );
        
else
            
this .removeEventListener(shortTypeName,fHandler, true );
        }
    }
posted on 2006-09-12 21:23 emu 阅读(719) 评论(0)  编辑  收藏 所属分类: DHTML和JAVASCRIPT 技术

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