var tbl = document.getElementById("table1");
for(var i=0,l=tbl.children.length;i<l;i++){
if(tbl.children[i].form){
//此为表单元素...
}
}查看table1下的子元素里有form属性的就是表单元素了...
for(var i=0,l=tbl.children.length;i<l;i++){
if(tbl.children[i].form){
//此为表单元素...
}
}查看table1下的子元素里有form属性的就是表单元素了...
<table id="table1">
<tr>
<td><input type="text" name="t1" value="11111" /><input type="checkbox" name="c1"><select name=""><option>000</option><option selected="selected">111</option></select></td>
</tr>
</table>
<table id="table2">
<tr>
<td></td>
</tr>
</table>
<table id="table3">
<tr>
<td></td>
</tr>
</table>
</form><script type="text/javascript">
<!--
for (i=0;i<document.getElementById("table1").getElementsByTagName("input").length;i++)
{
alert(document.getElementById("table1").getElementsByTagName("input")[i].value);
}
for (i=0;i<document.getElementById("table1").getElementsByTagName("select").length;i++)
{
alert(document.getElementById("table1").getElementsByTagName("select")[i].selectedIndex);
}
//-->
</script>