js动态创建表格,删除行列的小例子

时间:2020-05-13 人气:0

<!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=utf-8" />
<title>无标题文档</title>
<link rel="stylesheet" href="tab.css" />
<script type="text/javascript" src="../Day26https://img.qb5200.com/download-x/doctool.js"></script>
<script type="text/javascript">
function createTab1()
{
    var tabNode = doc.createElement("table");
    var tbdNode = doc.createElement("tbody");
    var trNode = doc.createElement("tr");
    var tdNode = doc.createElement("td");
    var textNode = doc.createTextNode("单元格一");
    tdNode.appendChild(textNode);
    trNode.appendChild(tdNode);
    tbdNode.appendChild(trNode);
    tabNode.appendChild(tbdNode);
    byTag("div")[0].appendChild(tabNode);
}
function createTab()
{
    var tabNode = doc.createElement("table");
    //tabNode.id = "tabid";
    tabNode.setAttribute("id","tabid");
    var row = byName("rownum")[0].value;
    var col = byName("colnum")[0].value;
    for(var x=1; x<=row; x++)
    {
        var trNode = tabNode.insertRow();
        for(var y=1; y<=col; y++)
        {
            var tdNode = trNode.insertCell();
            tdNode.innerHTML = x+"...."+y;
        }
    }
    byTag("div")[0].appendChild(tabNode);
    event.srcElement.disabled = true;
}
function delRow()
{
    var tabNode = byId("tabid");
    if(tabNode==null)
    {
        alert("表格不存在 ");
        return;
    }
    var rownum = byName("delrow")[0].value;
    if(rownum>0 && rownum<=tabNode.rows.length)
        tabNode.deleteRow(rownum-1);
    else
    {
        alert("删除的行不存在，学习数数很重要");
    }
}
function delCol()
{
    var tabNode = byId("tabid");
    if(tabNode==null)
    {
        alert("表格不存在 ");
        return;
    }
    var colnum = byName("delcol")[0].value;
    if(colnum>0 && colnum<=tabNode.rows[0].cells.length)
    {
        for(var x=0;x<tabNode.rows.length; x++)
        {
            tabNode.rows[x].deleteCell(colnum-1);
        }
    }
    else
    {
        alert("删除的列不存在");
    }
}
</script>
</head>
<body>

行：<input type="text" name="rownum" /><br />
列：<input type="text" name="colnum" /><br />
<input type="button" value="创建表格" onclick="createTab()" /><br />
<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 />
<br />
<div>
</div>
</body>
</html>

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