JavaScript实现AJAX的拖动效果

例子一
===================================================

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>drag layer</title>
<style>
body,table{color:#000000;
    font-size:12px;
}
div.div_one{}
.dragBar{color:#FFFFFF;
    font-weight:bold}
</style>
<script language="javascript" defer>
/*written by joelee@51js
*/
    var tmpElement=null;
    var dragElement=null;
    var downX,downY,tmp_o_x,tmp_o_y;
    var refElement=null;
    var dragActive=0;
    var draging=0;
function readyDrag(){
    dragActive=1;
    if(event.srcElement.tagName!="DIV")
        return;
    dragElement=event.srcElement.parentNode;
    tmpElement=dragElement.cloneNode(true);
    tmpElement.style.filter="alpha(opacity=90)";
    tmpElement.style.zIndex=2;
    dragElement.style.zIndex=1;
    tmpElement.style.position="absolute";
    if(dragElement.parentNode.tagName!="BODY"){
        dragElement.style.left=dragElement.offsetLeft+dragElement.parentNode.style.pixelLeft;
        dragElement.style.top=dragElement.offsetTop+dragElement.parentNode.style.pixelTop;
    }
    downX=event.clientX;
    downY=event.clientY;
    tmp_o_x=dragElement.style.pixelLeft;
    tmp_o_y=dragElement.style.pixelTop;
    tmpElement.style.visibility="hidden";
    document.body.appendChild(tmpElement);
    document.onmousemove=startDrag;
    }
    document.onmouseup=endDrag;
function startDrag(){
    if(dragActive==1&&event.button==1&&dragElement!=null&&tmpElement!=null){
        tmpElement.style.visibility="visible";
        tmpElement.style.left=tmp_o_x+event.clientX-downX;
        tmpElement.style.top=tmp_o_y+event.clientY-downY;
        dragElement.style.backgroundColor="#CCCCCC";
        document.body.style.cursor="move";
        draging=1;
    }
}
function endDrag(){
    if(dragActive==1&&tmpElement!=null){
        if(draging==1){
            dragElement.removeNode(true);
            draging=0;
        }
        tmpElement.style.filter="alpha(opacity=100)";
        tmpElement.style.zIndex=1;
        document.body.style.cursor="default";
        if(refElement!=null&&refElement.parentNode!=null&&refElement.parentNode.tagName!="BODY"){
            tmpElement.style.width=refElement.parentNode.style.width;
            tmpElement.style.position="";
            refElement.parentNode.insertBefore(tmpElement,refElement);
        }
    }
    dragElement=null;
    tmpElement=null;
    dragActive=0;
}
function readyInsert(){
    if(dragActive==1){
        var element=event.srcElement;
        if(element==dragElement)return;
        if(element.tagName!="DIV")
            return;
        if(element.className=="dragBar"||element.className=="textSheet"||element.className=="blankBar")
            element=element.parentNode;
        element.style.backgroundColor="#CCCCCC";
        element.style.filter="alpha(opacity=50)";
        refElement=element;
    }
}
function failInsert(){
    var element=event.srcElement;
    if(element.tagName!="DIV")
        return;
    try{
        if(element.className=="dragBar"||element.className=="textSheet"||element.className=="blankBar")
            element=element.parentNode;
    }catch(e){}
    element.style.filter="alpha(opacity=100)";
    element.style.backgroundColor="#FFFFFF";
    refElement=null;
}
document.onselectstart=function(){return false}
</script>
</head>

<body>
<div id="div_one" class="div_one" style="position:absolute; left:116px; top:137px; width:433px; z-index:1; background-color: #FFFFFF; layer-background-color: #FFFFFF;" onMouseOver="readyInsert()" onMouseOut="failInsert()">
<div onMouseDown="readyDrag()" style="cursor:move; border:1px solid #996666; background-color:#996666; height:20px" name="dragDIV" class="dragBar"><img src="snap_icon.gif" width="16" height="16">Window</div>
<div class="textSheet" style="border:1px solid #996666;">Content<br>
Content<br>
Content<br>
Content <br>
</div>
<div class="blankBar" style="height:10px"></div></div>
<div id="grid1" style="position:absolute; left:534px; top:37px; width:336px; height:15px; z-index: 100; visibility: visible;">
<div style="height:20px;z-index:2;" onMouseOver="readyInsert()" onMouseOut="failInsert();">把层拖动到这儿</div>
</div>
<div id="grid2" style="position:absolute; left:20px; top:40px; width:494px; height:15px; z-index: 100; visibility: visible;">
<div style="height:20px;z-index:2; background-image:url()" onMouseOver="readyInsert()" onMouseOut="failInsert();">把层拖动到这儿</div>
</div>
<div id="div_one" class="div_one" style="position:absolute; left:204px; top:277px; width:433px; z-index:1; background-color: #FFFFFF; layer-background-color: #FFFFFF;" onMouseOver="readyInsert()" onMouseOut="failInsert()">
<div onMouseDown="readyDrag()" style="cursor:move; border:1px solid #996666; background-color:#996666; height:20px" name="dragDIV" class="dragBar"><img src="snap_icon.gif" width="16" height="16">BBS</div>
<div class="textSheet" style="border:1px solid #996666;">Content</div>
<div class="blankBar" style="height:10px"></div>
</div>
<div id="div_one" class="div_one" style="position:absolute; left:561px; top:195px; width:433px; z-index:1; background-color: #FFFFFF; layer-background-color: #FFFFFF;" onMouseOver="readyInsert()" onMouseOut="failInsert()">
<div onMouseDown="readyDrag()" style="cursor:move; border:1px solid #996666; background-color:#996666; height:20px" name="dragDIV" class="dragBar"><img src="snap_icon.gif" width="16" height="16">Log</div>
<div class="textSheet" style="border:1px solid #996666;">Content<br>
Content<br>
Content <br>
Content<br>
</div>
<div class="blankBar" style="height:10px"></div>
</div>
<div id="div_one" class="div_one" style="position:absolute; left:438px; top:74px; width:433px; z-index:1; background-color: #FFFFFF; layer-background-color: #FFFFFF;" onMouseOver="readyInsert()" onMouseOut="failInsert()">
<div onMouseDown="readyDrag()" style="cursor:move; border:1px solid #996666; background-color:#996666; height:20px" name="dragDIV" class="dragBar"><img src="snap_icon.gif" width="16" height="16">Worker</div>
<div class="textSheet" style="border:1px solid #996666;">Content</div>
<div class="blankBar" style="height:10px"></div>
</div>
<div id="div_one" class="div_one" style="position:absolute; left:206px; top:406px; width:433px; z-index:1; background-color: #FFFFFF; layer-background-color: #FFFFFF;" onMouseOver="readyInsert()" onMouseOut="failInsert()">
<div onMouseDown="readyDrag()" style="cursor:move; border:1px solid #996666; background-color:#996666; height:20px" name="dragDIV" class="dragBar"><img src="snap_icon.gif" width="16" height="16">Tools</div>
<div class="textSheet" style="border:1px solid #996666;">Content</div>
<div class="blankBar" style="height:10px"></div>
</div>
</body>
</html>

例子二

================================================================

<html>
<head>
<title>DRAG the DIV</title>
<style>
*{font-size:12px}
.dragTable{
    font-size:12px;
    border-top:1px solid #3366cc;
    margin-bottom: 10px;
    width:100%;
    background-color:#FFFFFF;
}
.dragTR{
    cursor:move;
    color:#7787cc;
    background-color:#e5eef9;
}
td{vertical-align:top;}
#parentTable{
    border-collapse:collapse;
    letter-spacing:25px;
}
</style>
<script defer>
/****JoeLee************E-MAIL:hktx@163.com****QQ:48293707*****11:09 2006-2-9******/
    var draged=false;
    tdiv=null;
function dragStart(){
    ao=event.srcElement;
    if((ao.tagName=="TD")||(ao.tagName=="TR"))ao=ao.offsetParent;
    else return;
    draged=true;
    tdiv=document.createElement("div");
    tdiv.innerHTML=ao.outerHTML;
    tdiv.style.display="block";
    tdiv.style.position="absolute";
    tdiv.style.filter="alpha(opacity=70)";
    tdiv.style.cursor="move";
    tdiv.style.width=ao.offsetWidth;
    tdiv.style.height=ao.offsetHeight;
    tdiv.style.top=getInfo(ao).top;
    tdiv.style.left=getInfo(ao).left;
    document.body.appendChild(tdiv);
    lastX=event.clientX;
    lastY=event.clientY;
    lastLeft=tdiv.style.left;
    lastTop=tdiv.style.top;
    try{
        ao.dragDrop();
    }catch(e){}
}
function draging(){//重要:判断MOUSE的位置
    if(!draged)return;
    var tX=event.clientX;
    var tY=event.clientY;
    tdiv.style.left=parseInt(lastLeft)+tX-lastX;
    tdiv.style.top=parseInt(lastTop)+tY-lastY;
    for(var i=0;i<parentTable.cells.length;i++){
        var parentCell=getInfo(parentTable.cells[i]);
        if(tX>=parentCell.left&&tX<=parentCell.right&&tY>=parentCell.top&&tY<=parentCell.bottom){
            var subTables=parentTable.cells[i].getElementsByTagName("table");
            if(subTables.length==0){
                if(tX>=parentCell.left&&tX<=parentCell.right&&tY>=parentCell.top&&tY<=parentCell.bottom){
                    parentTable.cells[i].appendChild(ao);
                }
                break;
            }
            for(var j=0;j<subTables.length;j++){
                var subTable=getInfo(subTables[j]);
                if(tX>=subTable.left&&tX<=subTable.right&&tY>=subTable.top&&tY<=subTable.bottom){
                    parentTable.cells[i].insertBefore(ao,subTables[j]);
                    break;
                }else{
                    parentTable.cells[i].appendChild(ao);
                }
            }
        }
    }
}

posted on 2007-10-09 09:19 lk 阅读(244) 评论(0) 编辑收藏所属分类: ajax&js

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