JavaScript动态添加和删除行

//添加按钮定义中的按钮

    function addBtnRow() {      

        var table = document.getElementById('btnList');

        var rownum = table.rows.length;

        var newrow = table.insertRow(rownum);

        var newcell = newrow.insertCell();

        newcell.innerHTML = "<input name='checkbox' type='radio' value='1'><input name='flags' type='hidden' value='1' ><input name='confIds' value='' type='hidden' />&nbsp;"+rownum;

        newcell = newrow.insertCell();

        newcell.innerHTML = "<input name='bvalue' value='' type='text' style='width:100%' >";

        newcell = newrow.insertCell();

        newcell.innerHTML = "<input name='bevent' value='' type='text' style='width:500px' ondblclick=openWin(this,'395','200'); >";

        newrow.cells[1].children[0].focus();

    }

   

    //删除按钮定义中的按钮

    function delBtnRow(){

         var table = document.getElementById("btnList");

         for(var i=1; i<table.rows.length; i++){

             if(table.rows[i].cells[0].children[0].checked){

                 if(table.rows[i].cells[0].children[2].value!=""){

                     document.forms[0].delConfId.value+=table.rows[i].cells[0].children[2].value+"@";

                   }

                 table.deleteRow(i);

             }

         }

       for(var i=1; i<table.rows.length; i++){//删除某行后，重新调整序号值

                    table.rows[i].cells[0].innerHTML = "<input name='checkbox1' type='radio' value='1'>&nbsp;"+i;

              }

}  

    应用举例：

<table id="btnList" width="100%" class="tabDef">

       <tr>

           <td nowrap align="center" width="10%">序号</td>

           <td nowrap align="center" >名称</td>

           <td nowrap align="center" width="500">方法或脚本</td>

       </tr>

    </table>