表格的创建于删除

[html]
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>

<style type="text/css">
table{
    border:#0033FF 1px solid;
    width:600px;
    border-collapse:collapse;
    }
table td{
    border:#0033FF 1px solid;
    padding:10px;
    }
</style>

<script type="text/javascript">

function crtTable_1()
{
    /*var tabNode = document.createElement("table");
    var tbdNode = document.createElement("tbody");
    var trNode = document.createElement("tr");
    var tdNode = crtNode("td");
    trNode.appendChild(tdNode);
    tbdNode.appendChild(trNode);
    */
    //创建一个表格对象
    var tabNode = document.createElement("table");
    //通过表格对象的insertRow方法创建行
    var trNode = tabNode.insertRow();
    //创建单元格，通过行对象的insertCell方法创建
    var tdNode = trNode.insertCell();
    //给单元格添加一些内容
    tdNode.innerHTML = "一个单元格";

    //document.body.appendChild(tabNode);
    var divNode = document.getElementById("divid");
    divNode.appendChild(tabNode);
}
//简化document.createElement代码的方法
function crtNode(name)
{
    return document.createElement(name);
}

function crtTable()
{
    var tabNode = document.createElement("table");
    tabNode.setAttribute("id", "tabid");//给表格对象添加一个id属性

    var rowNum = document.getElementsByName("rownum")[0].value;
    var colNum = document.getElementsByName("colnum")[0].value;

    for(var x = 1; x <= rowNum; x++)
    {
        var trNode = tabNode.insertRow();
        for(var y = 1; y <= colNum; y++)
        {
            var tdNode = trNode.insertCell();
            tdNode.innerHTML = x + "--" + y;
        }
    }
    document.getElementById("divid").appendChild(tabNode);
    document.getElementsByName("crtBut")[0].disabled = true;
}

function delRow()
{
    var tabNode = document.getElementById("tabid");

    if(tabNode == null)
    {
        alert("表格不存在");
        return;
    }

    var rowNum = document.getElementsByName("delrow")[0].value;
    if(rowNum >= 1 && rowNum <= tabNode.rows.length)
    {
        tabNode.deleteRow(rowNum - 1);
    }
    else
    {
        alert("要删除的行数不存在");
    }
}

function delCol()
{
    //删除列：其实就是删除每一行中指定位置的单元格
    var tabNode = document.getElementById("tabid");

    if(tabNode == null)
    {
        alert("表格不存在");
        return;
    }

    var colNum = document.getElementsByName("delcol")[0].value;
    var trs = tabNode.rows;//获取行的集合
    if(colNum >= 1 && colNum <= trs[0].cells.length)
    {
        for(var x = 0; x < trs.length; x++)
        {
            trs[x].deleteCell(colNum - 1);
        }
    }
    else
    {
        alert("要删除的列数不存在");
    }

}

</script>

</head>

<body>
行数：<input type="text" name="rownum" /><br />
列数：<input type="text" name="colnum" /><br />
<input type="button" name="crtBut" value="创建表格" onclick="crtTable()" />
<br />
<hr />
<input type="text" name="delrow" /><input type="button" value="删除行" onclick="delRow()" /><br />
<input type="text" name="delcol" /><input type="button" value="删除列" onclick="delCol()" /><br />

<div id="divid">

</div>
</body>
</html>

补充：web前端 , HTML/CSS  ,