js对table实现增加和删除行!DOCTYPE HTML PUBLIC -//W3C//DTD HTML 4.01 Transitional//EN http://www
js对table实现增加和删除行
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title> New Document </title> <meta name="Generator" content="EditPlus"> <meta name="Author" content=""> <meta name="Keywords" content=""> <meta name="Description" content=""> </head> <body> <script type="text/javascript">//添加方法function addtr(){ //var trid=0; var tab=document.getElementById("signFrame"); //添加行 var newTR = tab.insertRow(tab.rows.length); alert(tab.rows.length); //trid++; //获取序号=行索引 var xuhao=newTR.rowIndex.toString(); alert(xuhao); newTR.id = "tr" + xuhao; //添加列:序号 var newNameTD=newTR.insertCell(0); //添加列内容 newNameTD.innerHTML = xuhao; //添加列:日期 var newNameTD=newTR.insertCell(1); //添加列内容 newNameTD.innerHTML = "<input name='time" + xuhao + "' id='time" + xuhao + " size='19' onmouseover='this.style.backgroundColor=#6298E1;this.style.color=#000000;' onmouseout='this.style.backgroundColor=#6298E1;this.style.color=#000000;' />"; //添加列:方式 var newEmailTD=newTR.insertCell(2); //添加列内容 newEmailTD.innerHTML = "<select style='width:70px;' name='way" + xuhao + "' id='way" + xuhao + "'><option value='电话'>电话</option><option value='QQ'>QQ</option> </select>"; //添加列:备注 var newTelTD=newTR.insertCell(3); //添加列内容 newTelTD.innerHTML = "<input size='60' name='remark" + xuhao + "' id='remark" + xuhao + "' type='text' onclick='showid(this)' />"; //添加列:删除按钮 var newDeleteTD=newTR.insertCell(4); //添加列内容 newDeleteTD.innerHTML = "<div align='center' style='width:40px'><a href='javascript:;' onclick="deltr('tr" + xuhao + "')">删除</a></div>"; }</script><script type="text/javascript">//删除其中一行function deltr(trid){ //alert(trid); var tab=document.getElementById("signFrame"); var row=document.getElementById(trid); var index=row.rowIndex;//rowIndex属性为tr的索引值，从0开始 tab.deleteRow(index); //从table中删除 //重新排列序号，如果没有序号，这一步省略 var nextid; for(i=index;i<tab.rows.length;i++){ tab.rows[i].cells[0].innerHTML = i.toString(); nextid=i+1; remark=document.getElementById("remark"+nextid); remark.id="remark"; }}</script><script type="text/javascript"> function showid(txt) {alert(txt.id); }</script><body><input type="button" value="保存" onclick="addtr()" /><table border="1px" width="70%" id="signFrame"> <tr id="trHeader"> <td width="50px">序号</td> <td width="170px">时间</td> <td width="100px">方式</td> <td>备注</td> <td width="80px">操作</td> </tr></table> </body></html>?