js 实现 datagrid

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/*
*====================================================================================================================
*/

//定义全局的表格行列值
var col = 5;
var row = 2;

//currRowIndex 选定行
var currRowIndex = 0;

//表单域数组(这部分作废)-----------------
var elementNames = new Array(col);
var k = 0;
for(k=0;k<col;k++)
elementNames[k] = k;
//---------------------------------------

//标题头数组
var headers = new Array(col);
for(k=0;k<col;k++)
{
headers[k] = "第" + k + "列";
}

//columnPropertys : 装载要创建的列读写属性
var colPropertys = new Array(col)
for(k=0;k<10;k++)
colPropertys[k] = 1;

colPropertys[0] = 0;

//colDefaultValues : 代表每次增加行的时候需要装入的默认值
var colDefaultValues = new Array(col);
for(k=0;k<col;k++)
{
if(k%2==0)
colDefaultValues[k] = "o";
else
colDefaultValues[k] = "j"; //代表这个不是默认值
}

//dataArray : 需要修改的数据集,修改之前预先装入,供用户参考
var dataArray = new Array(row*col);
var m=0,n=0;
for(m=0;m<row;m++)
{
for(n=0;n<col;n++)
{
dataArray[m*col + n] ="array(" + m + "," + n + ")"; //注意这里代表2维数组
}
}

/*
*====================================================================================================================
*/
var oPopup = window.createPopup();

//创建一个公共的可编辑的表格
//参数：
//   formName : 表单名
//   action : 代表当前要执行的提交动作 : 1:add 2:del 3:modefy 4:query
//   formAction : 表格对应Form的Action
//   tableId ：表格ID
//   colNum：表单列数目
//   rowNum：初始表格的行数目
function CreateTable(formName,action,formAction,tableId,colNum,rowNum)
{
var startStr = new String("");
var endStr = new String("");
var colStr = new String("");
startStr = "<form name=\"" + formName + "\" method=post action=\"" + formAction + "\">";
startStr += "<table id=\"" + tableId +"\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\">";

colStr = createTrs(colNum,rowNum);

endStr = "</table>";

//创建用来获取最后表格输出数据的隐藏域
var hiddens = CreateHiddens(colNum,action);
endStr += hiddens;
endStr += "</form>";
//输出表格
//document.forms(0).elements("t").value = (startStr + colStr + endStr);
document.write(startStr + colStr + endStr);
}

function CreateHiddens(cols,action)
{
var str = new String("");
var i=0;
for(i=0;i<cols;i++)
{
str +="<input type=\"hidden\" name=\"col" + (i+1) + "\" >";
}
str+="<input type=hidden name=\"action\" value=\"" + action + "\">";
return str;
}

function createTrs(colNum,rowNum)
{
var colStr = new String("");
var i = 0;
var j = 0;

colStr += "<tr bgColor='#00ccff'>"

//创建表头行
colStr += "<td onClick=orderTb1(this,1); onMouseOver=\"showTip('单击对本列排序');\" onMouseOut=\"hideTip();\"><center>"
colStr += "序号";
colStr += "</center></td>";
for(i=1;i<=colNum;i++)
{
colStr += "<td align=center onClick=orderTb1(this,1); onMouseOver=\"showTip('单击对本列排序');\" onMouseOut=\"hideTip();\" >";
colStr += headers[i-1];
colStr += "</td>";
}

//创建表体行
for(i=0;i<rowNum;i++)
{
colStr += "<tr ";
colStr += "onDblClick=\"ChangeInput(this);\" "; //表格行中的事件支持部分
colStr += "onBlur=\"ResetTR(this);\" >";

//创建每行的所有单元格
   colStr += "<td onClick=SelectRow(this);>";
   colStr += i+1;
   colStr +="</td>";
for(j=1;j<=colNum;j++)
{
   colStr += "<td onMouseOut=\"this.bgColor='#FFFFFF';\" onMouseOver=\"this.bgColor='#00CCFF';\" >";
   colStr += dataArray[i*colNum+j-1];
   colStr +="</td>";
}
colStr +="</tr>";
}
return colStr;
}

//把某行转变为输入状态
function ChangeInput(objTR)
{
var str = new String("");
var i = 0;

for(i=1;i<objTR.cells.length;i++)
{
str = "<input type=text name=\"" + elementNames[i-1] + "\" style=\"" + objTR.cells[i].width + "\" ";
//装入默认值
if(colDefaultValues[i-1]=="j") //j代表该列不能装入默认值
   str += "value=\"" + objTR.cells[i].innerText + "\"";
else//否则装入默认值
   str += "value=\"" + colDefaultValues[i-1] + "\"";
//控制控件的读写属性
if(colPropertys[i-1] == 0)
{
   str += " disabled ";
}
str += "/>";
objTR.cells[i].innerHTML = str;
}

objTR.ondblclick=doNothing; //使行保持原始状态
}

//把行恢复为非输入状态
function ResetTR(objTR)
{
var str = new String("");
var i = 0;
for(i=0;i<objTR.cells.length;i++)
{
var objChild;
var tmpStr = "";
tmpStr = objTR.cells[i].innerHTML;

//里面包含控件
if(objTR.cells[i].firstChild!=undefined && objTR.cells[i].firstChild.value!=undefined)
{
   tmpStr = objTR.cells[i].firstChild.value;
   if(tmpStr=="")
    tmpStr = " "
   objTR.cells[i].innerHTML = tmpStr + " ";
   continue;
}

//里面不包含控件
if(tmpStr==" " || tmpStr=="")
{
   if(objTR.cells[i].innerHTML!="")
    tmpStr += objTR.cells[i].innerHTML;
   else
    tmpStr += " ";
}
objTR.cells[i].innerHTML = tmpStr;

if(objTR.cells[i].innerHTML=="")
objTR.cells[i].innerHTML=" ";
}
}

//对表格指定列进行排序
function orderTB(objTB,index,type){
for(var i=1;i<(objTB.rows.length-1);i++){
for(var j=i+1;j<objTB.rows.length;j++){
   var tmp1,tmp2;

   if(objTB.rows[j].cells[index].firstChild.value==undefined)
    tmp1 = objTB.rows[j].cells[index].innerText;
   else
    tmp1 = objTB.rows[j].cells[index].firstChild.value;

   if(objTB.rows[i].cells[index].firstChild.value==undefined)
    tmp2 = objTB.rows[i].cells[index].innerText;
   else
    tmp2 = objTB.rows[i].cells[index].firstChild.value;
    if(tmp1>tmp2)
    {
     objTB.moveRow(j,i);
    }
}
}
}

function orderTb1(objTD,type)
{
var objTR =objTD.parentElement;
var objTable = objTR.parentElement;
var colIndex = objTD.cellIndex;
orderTB(objTable,colIndex);
}

//在表格末尾增加一行
function InsertRow(tableId)
{
var objTable = document.getElementById(tableId);
var col = objTable.cells.length/objTable.rows.length;
var row = objTable.rows.length;
var objRow = objTable.insertRow(); //增加行
var i = 0;

//取得最大序号
var max1 = 1;
for(i=1;i<row-1;i++)
{
var tmpMax = 1;
if(parseFloat(objTable.rows[i].cells[0].innerText) > parseFloat(objTable.rows[i+1].cells[0].innerText))
{
   tmpMax = parseFloat(objTable.rows[i].cells[0].innerText);
}
else
{
   tmpMax = parseFloat(objTable.rows[i+1].cells[0].innerText);
}
if(tmpMax>=max1)
   max1= tmpMax;
}
for(i=1;i<=col;i++)
{
var objCell = objRow.insertCell();
objRow.cells[0].innerText = parseFloat(max1)+1;
objCell.innerHTML = " ";
objCell.onmouseover = Td_MouseOver_Handle;
objCell.onmouseout = Td_MouseOut_Handle
objRow.cells[0].onclick = TD_Click_Handle;
objRow.cells[0].onmouseover = doNothing;
objRow.cells[0].onmouseout = doNothing;
}
//为新增的行提供事件绑定支持
//objRow.attachEvent('ondblclick', dblClick_Handle);
objRow.ondblclick = dblClick_Handle;
objRow.onblur = click_Handle;
}

//删除最后1行
function DeleteRow(tableId)
{
var objTable = document.getElementById(tableId);
if(objTable.rows.length==1)
{
alert("对不起，你不能删除表格头!!!");
return;
}
if(confirm("确定删除?"))
{
objTable.deleteRow();
}
}

//选定指定行
function SelectRow(objTD)
{
var objTR =objTD.parentElement;
var objTable = objTR.parentElement;

for(var i=1;i<objTable.rows.length;i++)
objTable.rows[i].cells[0].bgColor = "#ffffff";

objTD.bgColor="#ff0000";
currRowIndex = objTR.rowIndex;
}

//删除指定的行
function DeleteOneRow(tableId,rowIndex)
{
var objTable = document.getElementById(tableId);
var objTable = document.getElementById(tableId);
if(objTable.rows.length==1 || rowIndex==0)
{
alert("对不起，你首先必须选择要删除的行！！！");
return;
}
if(confirm("确定删除?"))
{
objTable.deleteRow(rowIndex);
currRowIndex = 0;
}
else
{
for(var i=1;i<objTable.rows.length;i++)
{
objTable.rows[i].cells[0].bgColor = "#ffffff";
currRowIndex = 0;
}
}
}

//鼠标选择指定列
function TD_Click_Handle()
{
SelectRow(this)
}

//鼠标移入事件支持
function Td_MouseOver_Handle()
{
this.bgColor = "#00ccff";
}

//鼠标移出事件支持
function Td_MouseOut_Handle()
{
this.bgColor = "#ffffff";
}

//鼠标双击事件支持
function dblClick_Handle()
{
ChangeInput(this);// 切换到输入状态
this.ondblclick=doNothing;
}

//鼠标单击事件支持
function click_Handle()
{
ResetTR(this);
}
//保持行的原始状态
function doNothing()
{
return;
}

function showTip(msg)
{

with (oPopup.document.body)
{
style.backgroundColor="lightyellow";
style.border="solid black 1px";
style.fontSize = 12;
innerHTML=msg;
}
oPopup.show(event.x, event.y, 95, 16, document.body);
}

tmpStr = tmpStr.substring(startIndex,endIndex);
return tmpStr;
}
//====================================================================================================================
//submit 方法
function getData(tableId,form)
{
var objTable = document.getElementById(tableId);
var cols = objTable.cells.length/objTable.rows.length-1;
var rows = objTable.rows.length-1;
//为每个隐藏域设置值
var i=0,j=0;
for(i=1;i<=cols;i++)
{
for(j=1;j<=rows;j++)
{
   if(objTable.rows[j].cells[i].firstChild.value==undefined)
   {
    document.forms(form).elements("col" + i).value += trim(objTable.rows[j].cells[i].innerText);
   }
   else
    document.forms(form).elements("col" + i).value += trim(objTable.rows[j].cells[i].firstChild.value);

   document.forms(form).elements("col" + i).value += "#";
}
}
document.forms(form).submit();
}
//====================================================================================================================
</script>

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</body>
</html>
<script language="javascript1.2">
CreateTable('specForm','1','sub.jsp','tableId',col,row);
</script>