dom动态增加删除表格

作者：袖梨 2022-07-02

提示：您可以先修改部分代码再运行

<table width="99%" border="1" align="center" cellpadding="4" cellspacing="1" class="toptable grid" id="SignFrame">           
<tr id="trHeader">  
      <td width="30" align="center">序号</td>  
      <td width="28" align="center">数量</td>
      <td width="33" align="center">单价</td>
      <td width="35" align="center">金额</td>
      <td width="37" align="center"> </td>  
    </tr>
</table>
<div><br><br>
    <input name="Submit" type="button" class="hand" onClick="AddSignRow()" value="添加一行" />
        <input name='txtTRLastIndex' type='hidden' id='txtTRLastIndex' value="1" />                              
     <input name="button" type="submit" class="hand" id="button" value=" 确认提交 "><br>
</div>
</body>
</HTML>
<%
Dim count1,rsClass1,sqlClass1
set rsClass1=server.createobject("adodb.recordset")
sqlClass1="select * from cgdlei Order By lei asc"
rsClass1.open sqlClass1,conn,1,1
%>
<script language="javascript">// Example: obj = findObj("image1");   
var arr1 = [], arr2 = [];
function findObj(theObj, theDoc){  var p, i, foundObj;    if(!theDoc) theDoc = document;  if( (p = theObj.indexOf("?")) > 0 && parent.frames.length)  {    theDoc = parent.frames[theObj.substring(p+1)].document;    theObjtheObj = theObj.substring(0,p);  }  if(!(foundObj = theDoc[theObj]) && theDoc.all) foundObj = theDoc.all[theObj];  for (i=0; !foundObj && i < theDoc.forms.length; i++)     foundObj = theDoc.forms[i][theObj];  for(i=0; !foundObj && theDoc.layers && i < theDoc.layers.length; i++)     foundObj = findObj(theObj,theDoc.layers[i].document);  if(!foundObj && document.getElementById) foundObj = document.getElementById(theObj);    return foundObj;}   
//添加一个填写行   
function AddSignRow(){ //读取最后一行的行号，存放在txtTRLastIndex文本框中    
 var txtTRLastIndex = findObj("txtTRLastIndex",document);   
 var rowID = parseInt(txtTRLastIndex.value);   
    
 var signFrame = findObj("SignFrame",document);   
 //添加行   
 var newTR = signFrame.insertRow(signFrame.rows.length);   
 newTR.id = "SignItem" + rowID;   
    
 //添加列:序号   
 var newNameTD=newTR.insertCell(0);   
 //添加列内容   
 newNameTD.innerHTML = newTR.rowIndex.toString();

//添加列:数量   
 var newCompanyTD=newTR.insertCell(1);   
 //添加列内容   
 newCompanyTD.innerHTML = "<input onFocus='this.select()' name='sl" + rowID + "' type='text' class='txt24px' id='sl" + rowID + "' onKeypress='javascript:if (event.keyCode < 45 || event.keyCode > 57) event.returnValue = false;' value='0' size='2' style='border: #FF0000 1px solid;' onchange='co("ss"," + rowID + ",this.value)'/>"; 
 
   //添加列:单价   
 var newCompanyTD=newTR.insertCell(2);   
 //添加列内容   
 newCompanyTD.innerHTML = "<input onFocus='this.select()' name='dj" + rowID + "' type='text' class='txt24px' id='dj" + rowID + "' onKeypress='javascript:if (event.keyCode < 45 || event.keyCode > 57) event.returnValue = false;' value='0' size='2' style='border: #FF0000 1px solid;' onchange='co("dj"," + rowID + ",this.value)'/>"; 
 
    //添加列：金额
 var newCompanyTD=newTR.insertCell(3);   
 //添加列内容   
 newCompanyTD.innerHTML = "<input name='jine" + rowID + "' readonly='ture' type='text' class='txt24px' id='jine" + rowID + "' onKeypress='javascript:if (event.keyCode < 45 || event.keyCode > 57) event.returnValue = false;' size='4' value='0' />"; 
    
 //添加列:删除按钮   
 var newDeleteTD=newTR.insertCell(4);   
 //添加列内容   
 newDeleteTD.innerHTML = "<div align='center' style=''><a href='javascript:;' onclick="DeleteSignRow('SignItem" + rowID + "')">删除</a></div>";   
    
 //将行号推进下一行   
 txtTRLastIndex.value = (rowID + 1).toString() ;   
}   
//删除指定行   
function DeleteSignRow(rowid){   
 var signFrame = findObj("SignFrame",document);   
 var signItem = findObj(rowid,document);   
    
 //获取将要删除的行的Index   
 var rowIndex = signItem.rowIndex;   
    
 //删除指定Index的行   
 signFrame.deleteRow(rowIndex);   
    
 //重新排列序号，如果没有序号，这一步省略   
 for(i=rowIndex;i<signFrame.rows.length;i++){   
  signFrame.rows[i].cells[0].innerHTML = i.toString();   
 }   
}//清空列表 
function ClearAllSign(){   
 if(confirm('确定要清空所有吗？')){   
  var signFrame = findObj("SignFrame",document);   
  var rowscount = signFrame.rows.length;   
     
  //循环删除行,从最后一行往前删除   
  for(i=rowscount - 1;i > 0; i--){   
   signFrame.deleteRow(i);   
  }   
     
  //重置最后行号为1   
  var txtTRLastIndex = findObj("txtTRLastIndex",document);   
  txtTRLastIndex.value = "1";   
     
  //预添加一行   
  AddSignRow();   
 }   
}   
function co(a,b,c){
	if (a=="ss") {
		arr1[b] = c;
		//alert("第"+b+"行的数量="+c);
	}
	if (a=="dj") {
		arr2[b] = c;
		//alert("第"+b+"行的单价="+c);
	}
	if (arr1[b] && arr2[b]){
		//document.getElementsByName("je")[b-1].value = arr1[b]*arr2[b];
		document.getElementById("jine"+b).value = arr1[b]*arr2[b];
	}
}
</script>

提示：您可以先修改部分代码再运行

dom动态增加删除表格

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