javascript offfset

看一下示例代码

1.<BODY >
<TABLE BORDER=1 ALIGN=right>
   <TR>
     <TD ID=oCell><div id="parentdiv" style="position:relative" >parentdiv<div id="sondiv">sondiv</div></div></TD>
   </TR>
</TABLE>

运行结果parentdiv.offsetParent.tagName IS "body"

                 sondiv.offsetParent.id     IS　"parentdiv"

2.<BODY >
<TABLE BORDER=1 ALIGN=right>
   <TR>
     <TD ID=oCell><div id="parentdiv" style="position:relative" >parentdiv<div id="sondiv"　style="position:relative">sondiv</div></div></TD>
   </TR>
</TABLE>

运行结果parentdiv.offsetParent.tagName IS "body"

                 sondiv.offsetParent.id     IS　"parentdiv"

3.<BODY >
<TABLE BORDER=1 ALIGN=right>
   <TR>
     <TD ID=oCell><div id="parentdiv" >parentdiv<div id="sondiv"　style="position:relative">sondiv</div></div></TD>
   </TR>
</TABLE>

运行结果parentdiv.offsetParent.tagName IS "TD"

                 sondiv.offsetParent.tagName    IS　"body"

4.<BODY >
<TABLE BORDER=1 ALIGN=right>
   <TR>
     <TD ID=oCell><div id="parentdiv" >parentdiv<div id="sondiv">sondiv</div></div></TD>
   </TR>
</TABLE>

运行结果parentdiv.offsetParent.tagName IS "TD"

                 sondiv.offsetParent.tagName    IS　"TD"

5.<BODY >
<TABLE BORDER=1 ALIGN=right style="position:relative">
   <TR>
     <TD ID=oCell><div id="parentdiv" style="position:relative" >parentdiv<div id="sondiv"　style="position:relative">sondiv</div></div></TD>
   </TR>
</TABLE>

运行结果parentdiv.offsetParent.tagName IS "Table"

                 sondiv.offsetParent.tagName    IS　"parentdiv"

posted on 2010-04-14 17:47 blogsweb 阅读(168) 评论(0) 收藏举报