有段javaScript代码,是排序table的,不是很明白,请大家帮忙注释一下!分唾手可得!

[vabug]

//排序
function JM_PowerList(colNum)
{
headEventObject=event.srcElement
while(headEventObject.tagName!="TR")
{
headEventObject=headEventObject.parentElement
}
for (i=0;i<headEventObject.children.length;i++)
{
if (headEventObject.children[i]!=event.srcElement)
{
headEventObject.children[i].className='listTableHead'
}
}

var tableRows=0;
trObject=DataTable.children[0].children
for (i=0;i<trObject.length;i++)
{
Object=DataTable.children[0].children[i];
tableRows=(trObject[i].id=='ignore')?tableRows:tableRows+1;
}

var trinnerHTML=new Array(tableRows)
var tdinnerHTML=new Array(tableRows)
var tdNumber=new Array(tableRows)
var i0=0
var i1=0
for (i=0;i<trObject.length;i++)
{
if (trObject[i].id!='ignore')
{
trinnerHTML[i0]=trObject[i].innerHTML;
tdinnerHTML[i0]=trObject[i].children[colNum].innerHTML;
tdNumber[i0]=i;
i0++;
}
}
sourceHTML=clearStart.children[0].outerHTML;
//alert(sourceHTML);
//排序
for (bi=0;bi<tableRows;bi++)
{
for (i=0;i<tableRows;i++)
{
if(tdinnerHTML[i]>tdinnerHTML[i+1])
{
t_s=tdNumber[i+1];
t_b=tdNumber[i];
tdNumber[i+1]=t_b;
tdNumber[i]=t_s;
temp_small=tdinnerHTML[i+1];
temp_big=tdinnerHTML[i];
tdinnerHTML[i+1]=temp_big;
tdinnerHTML[i]=temp_small;
}
}
}


////????????? 请详细点,Thanks
var showshow='';
var numshow='';
for (i=0;i<tableRows;i++)
{
showshow=showshow+tdinnerHTML[i]+'\n';
numshow=numshow+tdNumber[i]+'|';
}

sourceHTML_head=sourceHTML.split("<TBODY>");
numshow=numshow.split("|");
var trRebuildHTML='';
if (event.srcElement.className=='listHeadClicked')
{
for (i=0;i<tableRows;i++)
{
trRebuildHTML=trRebuildHTML+trObject[numshow[tableRows-1-i]].outerHTML;

}
event.srcElement.className='listHeadClicked0';
}
else
{
for (i=0;i<tableRows;i++)
{
trRebuildHTML=trRebuildHTML+trObject[numshow[i]].outerHTML;
}
event.srcElement.className='listHeadClicked';
}

var DataRebuildTable='';
DataRebuildTable=sourceHTML_head[0]+trObject[0].outerHTML+trRebuildHTML+trObject[tableRows+1].outerHTML+'</TABLE>';
clearStart.innerHTML='';
clearStart.innerHTML=DataRebuildTable;
}

[begar]

自己也不大懂的，随便发表以下看法
function JM_PowerList(colNum)
{
headEventObject=event.srcElement//事件发生所在对象
while(headEventObject.tagName!="TR")//如果为行
{
headEventObject=headEventObject.parentElement//则取行所在的表
}
for (i=0;i<headEventObject.children.length;i++)//行循环
{
if (headEventObject.children[i]!=event.srcElement)//事件发生所在的行
{
headEventObject.children[i].className='listTableHead'
}
}

var tableRows=0;
trObject=DataTable.children[0].children //第一行
for (i=0;i<trObject.length;i++) //列循环取出列名为ignore的列号
{
Object=DataTable.children[0].children[i];
tableRows=(trObject[i].id=='ignore')?tableRows:tableRows+1;
}

var trinnerHTML=new Array(tableRows)
var tdinnerHTML=new Array(tableRows)
var tdNumber=new Array(tableRows)
var i0=0
var i1=0
for (i=0;i<trObject.length;i++)
{
if (trObject[i].id!='ignore')
{
trinnerHTML[i0]=trObject[i].innerHTML;
tdinnerHTML[i0]=trObject[i].children[colNum].innerHTML;
tdNumber[i0]=i;
i0++;
}
}
sourceHTML=clearStart.children[0].outerHTML;
//alert(sourceHTML);
//排序
for (bi=0;bi<tableRows;bi++)
{
for (i=0;i<tableRows;i++)
{
if(tdinnerHTML[i]>tdinnerHTML[i+1])
{
t_s=tdNumber[i+1];
t_b=tdNumber[i];
tdNumber[i+1]=t_b;
tdNumber[i]=t_s;
temp_small=tdinnerHTML[i+1];
temp_big=tdinnerHTML[i];
tdinnerHTML[i+1]=temp_big;
tdinnerHTML[i]=temp_small;
}
}
}


////????????? 请详细点,Thanks
var showshow='';
var numshow='';
for (i=0;i<tableRows;i++)
{
showshow=showshow+tdinnerHTML[i]+'\n';
numshow=numshow+tdNumber[i]+'|';
}

sourceHTML_head=sourceHTML.split("<TBODY>");
numshow=numshow.split("|");
var trRebuildHTML='';
if (event.srcElement.className=='listHeadClicked')
{
for (i=0;i<tableRows;i++)
{
trRebuildHTML=trRebuildHTML+trObject[numshow[tableRows-1-i]].outerHTML;

}
event.srcElement.className='listHeadClicked0';
}
else
{
for (i=0;i<tableRows;i++)
{
trRebuildHTML=trRebuildHTML+trObject[numshow[i]].outerHTML;
}
event.srcElement.className='listHeadClicked';
}

var DataRebuildTable='';
DataRebuildTable=sourceHTML_head[0]+trObject[0].outerHTML+trRebuildHTML+trObject[tableRows+1].outerHTML+'</TABLE>';
clearStart.innerHTML='';
clearStart.innerHTML=DataRebuildTable;
}
对不住了，mm找我有事，走先，自己琢磨琢磨把

[panyee]

在关键地语句上多试试alert弹出相应的信息, 估计你很快就明白了

[panyee]

有没有两个table的数据, 贴一断出来

[panyee]

<script>
//排序
function JM_PowerList(colNum)
{
headEventObject=event.srcElement;//取得引发事件的对象
while(headEventObject.tagName!="TR") //不是tr行,则从底下的td冒泡上来寻找到相应行
{
headEventObject=headEventObject.parentElement;
}

for (i=0;i<headEventObject.children.length;i++)
{
if (headEventObject.children[i]!=event.srcElement)//找到事件发生的td单元格
{
headEventObject.children[i].className='listTableHead';//把点击的列的className属性设为listTableHead
}
}

var tableRows=0;
trObject=clearStart.children[0].children; //取得表格中行对象, 原来这里叫DataTable, 可能是你写错了吧??
for (i=0;i<trObject.length;i++)
{
Object=clearStart.children[0].children[i];//取得每行的对象
tableRows=(trObject[i].id=='ignore')?tableRows:tableRows+1;//如果不是忽略行,则行数加一
}

var trinnerHTML=new Array(tableRows);
var tdinnerHTML=new Array(tableRows);
var tdNumber=new Array(tableRows)
var i0=0
var i1=0
for (i=0;i<trObject.length;i++)
{
if (trObject[i].id!='ignore')
{
trinnerHTML[i0]=trObject[i].innerHTML;//把行放在数组里
tdinnerHTML[i0]=trObject[i].children[colNum].innerHTML;//把要排序的行中td的内容放数组里
tdNumber[i0]=i;//行号
i0++;//加一,下个循环用
}
}
sourceHTML=clearStart.children[0].outerHTML;//取得表格中所有tr的html代码
//alert(sourceHTML);
//对所有td中的字符串进行排序, 算不算冒泡排序???
for (bi=0;bi<tableRows;bi++)
{
for (i=0;i<tableRows;i++)
{
if(tdinnerHTML[i]>tdinnerHTML[i+1])
{
t_s=tdNumber[i+1];
t_b=tdNumber[i];
tdNumber[i+1]=t_b;
tdNumber[i]=t_s;
temp_small=tdinnerHTML[i+1];
temp_big=tdinnerHTML[i];
tdinnerHTML[i+1]=temp_big;
tdinnerHTML[i]=temp_small;
}
}
}



var showshow='';
var numshow='';
for (i=0;i<tableRows;i++)
{
showshow=showshow+tdinnerHTML[i]+'\n';//把排序好的td的内容存在showshow字串里
numshow=numshow+tdNumber[i]+'|'; //把排序好的相应的行号也存在numshow中
}

sourceHTML_head=sourceHTML.split("<TBODY>");
numshow=numshow.split("|");
var trRebuildHTML='';
if (event.srcElement.className=='listHeadClicked')
{//已点击的列,
for (i=0;i<tableRows;i++)
{
trRebuildHTML=trRebuildHTML+trObject[numshow[tableRows-1-i]].outerHTML;//取出排序好的tr的内容连接起来

}
event.srcElement.className='listHeadClicked0';
}
else
{//新点击的列
for (i=0;i<tableRows;i++)
{
trRebuildHTML=trRebuildHTML+trObject[numshow[i]].outerHTML;
}
event.srcElement.className='listHeadClicked';
}
//取得排序后的tr集合结果字符串
alert(trRebuildHTML);
document.all.clearStart.innerHTML = trRebuildHTML; alert("end");//这条语句运行不了
var DataRebuildTable='';
//把旧的表格头和新的tr排序好的元素连接起来, 这条语句有错, 执行不下去
//DataRebuildTable=sourceHTML_head[0]+trObject[0].outerHTML+trRebuildHTML+trObject[tableRows+1].outerHTML+'</TABLE>';
//clearStart.innerHTML="";alert("c");
//clearStart.innerHTML=DataRebuildTable;alert("d");
}
</script>

[gdfspy2]

up

[panyee]

<script>
//排序
function JM_PowerList(colNum)
{
headEventObject=event.srcElement;//取得引发事件的对象
while(headEventObject.tagName!="TR") //不是tr行,则从底下的td冒泡上来寻找到相应行
{
headEventObject=headEventObject.parentElement;
}

for (i=0;i<headEventObject.children.length;i++)
{
if (headEventObject.children[i]!=event.srcElement)//找到事件发生的td单元格
{
headEventObject.children[i].className='listTableHead';//把点击的列的className属性设为listTableHead
}
}

var tableRows=0;
trObject=clearStart.children[0].children; //取得表格中行对象, 原来这里叫DataTable, 可能是你写错了吧??
for (i=0;i<trObject.length;i++)
{
Object=clearStart.children[0].children[i];//取得每行的对象
tableRows=(trObject[i].id=='ignore')?tableRows:tableRows+1;//如果不是忽略行,则行数加一
}

var trinnerHTML=new Array(tableRows);
var tdinnerHTML=new Array(tableRows);
var tdNumber=new Array(tableRows)
var i0=0
var i1=0
for (i=0;i<trObject.length;i++)
{
if (trObject[i].id!='ignore')
{
trinnerHTML[i0]=trObject[i].innerHTML;//把行放在数组里
tdinnerHTML[i0]=trObject[i].children[colNum].innerHTML;//把要排序的行中td的内容放数组里
tdNumber[i0]=i;//行号
i0++;//加一,下个循环用
}
}
sourceHTML=clearStart.children[0].outerHTML;//取得表格中所有tr的html代码

//对所有td中的字符串进行排序, 算不算冒泡排序???
for (bi=0;bi<tableRows;bi++)
{
for (i=0;i<tableRows;i++)
{
if(tdinnerHTML[i]>tdinnerHTML[i+1])
{
t_s=tdNumber[i+1];
t_b=tdNumber[i];
tdNumber[i+1]=t_b;
tdNumber[i]=t_s;
temp_small=tdinnerHTML[i+1];
temp_big=tdinnerHTML[i];
tdinnerHTML[i+1]=temp_big;
tdinnerHTML[i]=temp_small;
}
}
}



var showshow='';
var numshow='';
for (i=0;i<tableRows;i++)
{
showshow=showshow+tdinnerHTML[i]+'\n';//把排序好的td的内容存在showshow字串里
numshow=numshow+tdNumber[i]+'|'; //把排序好的相应的行号也存在numshow中
}

sourceHTML_head=sourceHTML.split("<TBODY>");//从<TBODY>截断,我试了,前头串为空

numshow=numshow.split("|");
var trRebuildHTML='';
if (event.srcElement.className=='listHeadClicked')
{//已点击的列, 则逆排
for (i=0;i<tableRows;i++)
{
trRebuildHTML=trRebuildHTML+trObject[numshow[tableRows-1-i]].outerHTML;//取出排序好的tr的内容连接起来

}
event.srcElement.className='listHeadClicked0';
}
else
{//默认顺排,新点击顺排
for (i=0;i<tableRows;i++)
{
trRebuildHTML=trRebuildHTML+trObject[numshow[i]].outerHTML;
}
event.srcElement.className='listHeadClicked';
}
//取得排序后的tr集合结果字符串
var DataRebuildTable='';
//把旧的表格头和新的tr排序好的元素连接起来, (修改了一下)
DataRebuildTable = "<table border=1 id='clearStart'><TBODY>" + trObject[0].outerHTML + trRebuildHTML + "</TBODY>" +

"</table>";
clearStart.outerHTML=DataRebuildTable;//表格用新串重新写一次

}
</script>
<table border=1 id="clearStart">
<tr bgcolor=cccccc id='ignore'>
<td onclick="JM_PowerList(0)">列一</td>
<td onclick="JM_PowerList(1)">列二</td>
</tr>
<tr>
<td>aa</td>
<td>zzz</td>
</tr>
<tr>
<td>cc</td>
<td>dd</td>
</tr>
<tr>
<td>ee</td>
<td>abdf</td>
</table>