ajax网站拖拽效果

转自:http://hi.baidu.com/yan5201314/blog/item/b69e543d01550bee3c6d9743.html
2006年11月18日 星期六 上午 00:23
近日在 Syosyume'sBlog上的看到GOOGLE的个性化主页拖搁功能的实现方法可以借鉴,他的方法是用Jscript实现,不包含记忆功能,没有数据交换 其他 效果Google的个性化主页如出一辙 具体实现方法: CSS代码
程序代码
<style> .dragTable{ border-top:1pxsolid#3366cc; margin-bottom:10px; width:100%; background-color:#FFFFFF; } td{vertical-align:top;} .dragTR{ cursor:move; color:#7787cc; text-decoration:underline; background-color:#e5eef9; padding:10px010px5px; font-weight:bold; } #parentTable{ border-collapse:collapse; letter-spacing:25px; } </style>
Jscript代码
程序代码
<scriptdeferlanguage="jscript"> varDrag={dragged:false, ao:null, tdiv:null, dragStart:function(){ Drag.ao=event.srcElement; if((Drag.ao.tagName=="TD")||(Drag.ao.tagName=="TR")){ Drag.ao=Drag.ao.offsetParent; Drag.ao.style.zIndex=100; }else return; Drag.dragged=true; Drag.tdiv=document.createElement("div"); Drag.tdiv.innerHTML=Drag.ao.outerHTML; Drag.ao.style.border="1pxdashedred"; Drag.tdiv.style.display="block"; Drag.tdiv.style.position="absolute"; Drag.tdiv.style.filter="alpha(opacity=70)"; Drag.tdiv.style.cursor="move"; Drag.tdiv.style.border="1pxsolid#000000"; Drag.tdiv.style.width=Drag.ao.offsetWidth; Drag.tdiv.style.height=Drag.ao.offsetHeight; Drag.tdiv.style.top=Drag.getInfo(Drag.ao).top; Drag.tdiv.style.left=Drag.getInfo(Drag.ao).left; document.body.appendChild(Drag.tdiv); Drag.lastX=event.clientX; Drag.lastY=event.clientY; Drag.lastLeft=Drag.tdiv.style.left; Drag.lastTop=Drag.tdiv.style.top; }, draging:function(){//重要:判断MOUSE的位置 if(!Drag.dragged||Drag.ao==null)return; vartX=event.clientX; vartY=event.clientY; Drag.tdiv.style.left=parseInt(Drag.lastLeft)+tX-Drag.lastX; Drag.tdiv.style.top=parseInt(Drag.lastTop)+tY-Drag.lastY; for(vari=0;i<parentTable.cells.length;i++){ varparentCell=Drag.getInfo(parentTable.cells[i]); if(tX>=parentCell.left&&tX<=parentCell.right&&tY>=parentCell.top&&tY<=parentCell.bottom){ varsubTables=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(Drag.ao); } break; } for(varj=0;j<subTables.length;j++){ varsubTable=Drag.getInfo(subTables[j]); if(tX>=subTable.left&&tX<=subTable.right&&tY>=subTable.top&&tY<=subTable.bottom){ parentTable.cells[i].insertBefore(Drag.ao,subTables[j]); break; }else{ parentTable.cells[i].appendChild(Drag.ao); } } } } } , dragEnd:function(){ if(!Drag.dragged)return; Drag.dragged=false; Drag.mm=Drag.repos(150,15); Drag.ao.style.borderWidth="0px"; Drag.ao.style.borderTop="1pxsolid#3366cc"; Drag.tdiv.style.borderWidth="0px"; Drag.ao.style.zIndex=1; }, getInfo:function(o){//取得坐标 varto=newObject(); to.left=to.right=to.top=to.bottom=0; vartwidth=o.offsetWidth; vartheight=o.offsetHeight; while(o!=document.body){ to.left+=o.offsetLeft; to.top+=o.offsetTop; o=o.offsetParent; } to.right=to.left+twidth; to.bottom=to.top+theight; returnto; }, repos:function(aa,ab){ varf=Drag.tdiv.filters.alpha.opacity; vartl=parseInt(Drag.getInfo(Drag.tdiv).left); vartt=parseInt(Drag.getInfo(Drag.tdiv).top); varkl=(tl-Drag.getInfo(Drag.ao).left)/ab; varkt=(tt-Drag.getInfo(Drag.ao).top)/ab; varkf=f/ab; returnsetInterval(function(){if(ab<1){ clearInterval(Drag.mm); Drag.tdiv.removeNode(true); Drag.ao=null; return; } ab--; tl-=kl; tt-=kt; f-=kf; Drag.tdiv.style.left=parseInt(tl)+"px"; Drag.tdiv.style.top=parseInt(tt)+"px"; Drag.tdiv.filters.alpha.opacity=f; } ,aa/ab) }, inint:function(){//初始化 for(vari=0;i<parentTable.cells.length;i++){ varsubTables=parentTable.cells[i].getElementsByTagName("table"); for(varj=0;j<subTables.length;j++){ if(subTables[j].className!="dragTable")break; subTables[j].rows[0].className="dragTR"; subTables[j].rows[0].attachEvent("onmousedown",Drag.dragStart); } } document.onmousemove=Drag.draging; document.onmouseup=Drag.dragEnd; } //endofObjectDrag } Drag.inint(); function_show(str){ varw=window.open('',''); vard=w.document; d.open(); str=str.replace(/=(?!")(.*?)(?!")(|>)/g,"=/"$1/"$2"); str=str.replace(/(<)(.*?)(>)/g,"<spanstyle='color:red;'><$2></span><br/>"); str=str.replace(//r/g,"<br/>/n"); d.write(str); } </script> HTML代码 <tableborder="0"cellpadding="0"cellspacing="10"width="100%"id="parentTable"> <tr> <tdwidth="25%"> <tableborder=0class="dragTable"cellspacing="0"> <tr> <td><b>传说中的标题</b></td> </tr> <tr> <td>我什么也没看见</td> <tr> </table> </td> <tdwidth="25%"> <tableborder=0class="dragTable"cellspacing="0"> <tr> <td><b>传说中的标题</b></td> </tr> <tr> <td>我什么也没看见</td> <tr> </table> </td> <tdwidth="25%"> <tableborder=0class="dragTable"cellspacing="0"> <tr> <td><b>传说中的标题</b></td> </tr> <tr> <td>我什么也没看见</td> <tr> </table> </td> </tr> </table> 引用通告地址: http://www.hxblog.net/trackback.asp?tbID=881

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