parentElement\parentNode.parentNode.childNodes用法例子
offsetParent，parentNode,parentElement 区别
offsetParent
指与位置有关的上级元素
parentNode
指与位置无关的上级元素
parentElement 和 parentNode一样,但parentNode是W3C标准的parentElement 只在IE中可用.
第一种方法
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
<SCRIPT LANGUAGE="JavaScript">
<!--
var row = -1;
function showEdit(obj){
var cell2 = obj.parentNode.parentNode.childNodes[1];
var rowIndex = obj.parentNode.parentNode.rowIndex;
cell2.innerHTML = "<input type='text' value='"+ cell2.innerHTML +"'>";
if(row != -1){
var oldCell2 = document.getElementById("tb").rows[row].cells[1];
oldCell2.innerHTML = oldCell2.childNodes[0].value;
}
row = rowIndex;
}
//-->
</SCRIPT>
</HEAD>
<BODY>
<TABLE id="tb">
<TR>
<TD><input type="radio" onclick="showEdit(this)" name="rad"></TD>
<TD></TD>
<TD></TD>
</TR>
<TR>
<TD><input type="radio" onclick="showEdit(this)" name="rad"></TD>
<TD></TD>
<TD></TD>
</TR>
<TR>
<TD><input type="radio" onclick="showEdit(this)" name="rad"></TD>
<TD></TD>
<TD></TD>
</TR>
</TABLE>
</BODY>
</HTML>
第二种方法
<table border=1 width=100%>
<tr>
<td><input name=m type=checkbox onclick="mm(this)"></td>
<td>1111</td>
<td><input name=aaa value="222" disabled></td>
<td><input name=bbb value="333" disabled></td>
</tr>
<tr>
<td><input name=m type=checkbox onclick="mm(this)"></td>
<td>1111</td>
<td><input name=aaa value="222" disabled></td>
<td><input name=bbb value="333" disabled></td>
</tr>
<tr>
<td><input name=m type=checkbox onclick="mm(this)"></td>
<td>1111</td>
<td><input name=aaa value="222" disabled></td>
<td><input name=bbb value="333" disabled></td>
</tr>
</table>
<SCRIPT LANGUAGE="JavaScript">
function mm(e)
{
var currentTr=e.parentElement.parentElement;
var inputObjs=currentTr.getElementsByTagName("input");
for(var i=0;i<inputObjs.length;i++)
{
if(inputObjs[i]==e) continue;
inputObjs[i].disabled=!e.checked;
}
}
</SCRIPT>
offsetParent
指与位置有关的上级元素
parentNode
指与位置无关的上级元素
parentElement 和 parentNode一样,但parentNode是W3C标准的parentElement 只在IE中可用.
第一种方法
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
<SCRIPT LANGUAGE="JavaScript">
<!--
var row = -1;
function showEdit(obj){
var cell2 = obj.parentNode.parentNode.childNodes[1];
var rowIndex = obj.parentNode.parentNode.rowIndex;
cell2.innerHTML = "<input type='text' value='"+ cell2.innerHTML +"'>";
if(row != -1){
var oldCell2 = document.getElementById("tb").rows[row].cells[1];
oldCell2.innerHTML = oldCell2.childNodes[0].value;
}
row = rowIndex;
}
//-->
</SCRIPT>
</HEAD>
<BODY>
<TABLE id="tb">
<TR>
<TD><input type="radio" onclick="showEdit(this)" name="rad"></TD>
<TD></TD>
<TD></TD>
</TR>
<TR>
<TD><input type="radio" onclick="showEdit(this)" name="rad"></TD>
<TD></TD>
<TD></TD>
</TR>
<TR>
<TD><input type="radio" onclick="showEdit(this)" name="rad"></TD>
<TD></TD>
<TD></TD>
</TR>
</TABLE>
</BODY>
</HTML>
第二种方法
<table border=1 width=100%>
<tr>
<td><input name=m type=checkbox onclick="mm(this)"></td>
<td>1111</td>
<td><input name=aaa value="222" disabled></td>
<td><input name=bbb value="333" disabled></td>
</tr>
<tr>
<td><input name=m type=checkbox onclick="mm(this)"></td>
<td>1111</td>
<td><input name=aaa value="222" disabled></td>
<td><input name=bbb value="333" disabled></td>
</tr>
<tr>
<td><input name=m type=checkbox onclick="mm(this)"></td>
<td>1111</td>
<td><input name=aaa value="222" disabled></td>
<td><input name=bbb value="333" disabled></td>
</tr>
</table>
<SCRIPT LANGUAGE="JavaScript">
function mm(e)
{
var currentTr=e.parentElement.parentElement;
var inputObjs=currentTr.getElementsByTagName("input");
for(var i=0;i<inputObjs.length;i++)
{
if(inputObjs[i]==e) continue;
inputObjs[i].disabled=!e.checked;
}
}
</SCRIPT>