如何在JavaScript的HTML表格主体中插入行

我有一个带有页眉和页脚的HTML表：

<table id="myTable">
    <thead>
        <tr>
            <th>My Header</th>
        </tr>
    </thead>
    <tbody>
        <tr>
            <td>aaaaa</td>
        </tr>
    </tbody>
    <tfoot>
        <tr>
            <td>My footer</td>
        </tr>
    <tfoot>
</table>

我正在尝试添加tbody以下内容：

myTable.insertRow(myTable.rows.length - 1);

但该行已添加到该tfoot部分中。

我该如何插入tbody？

如果您要在中添加行tbody，请获取对其的引用并调用其insertRow方法。

var tbodyRef = document.getElementById('myTable').getElementsByTagName('tbody')[0];

// Insert a row at the end of table
var newRow = tbodyRef.insertRow();

// Insert a cell at the end of the row
var newCell = newRow.insertCell();

// Append a text node to the cell
var newText = document.createTextNode('new row');
newCell.appendChild(newText);

<table id="myTable">
  <thead>
    <tr>
      <th>My Header</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>initial row</td>
    </tr>
  </tbody>
  <tfoot>
    <tr>
      <td>My Footer</td>
    </tr>
  </tfoot>
</table>

（JSFiddle上的旧演示）

您可以使用jQuery尝试以下代码段：

$(table).find('tbody').append("<tr><td>aaaa</td></tr>");

基本方法：

这应该添加HTML格式的内容并显示新添加的行。

var myHtmlContent = "<h3>hello</h3>"
var tableRef = document.getElementById('myTable').getElementsByTagName('tbody')[0];

var newRow = tableRef.insertRow(tableRef.rows.length);
newRow.innerHTML = myHtmlContent;

你近了只需将行添加到tbody而不是table：

myTbody.insertRow();

只需在使用前获得对tBody（myTbody）的引用。注意，您不需要传递表中的最后一个位置；省略参数时，它会自动定位在末尾。

现场演示在jsFiddle上。

我认为这个脚本正是您所需要的

var t = document.getElementById('myTable');
var r =document.createElement('TR');
t.tBodies[0].appendChild(r)

添加行：

<html>
    <script>
        function addRow() {
            var table = document.getElementById('myTable');
            //var row = document.getElementById("myTable");
            var x = table.insertRow(0);
            var e = table.rows.length-1;
            var l = table.rows[e].cells.length;
            //x.innerHTML = "&nbsp;";

            for (var c=0, m=l; c < m; c++) {
                table.rows[0].insertCell(c);
                table.rows[0].cells[c].innerHTML = "&nbsp;&nbsp;";
            }
        }

        function addColumn() {
            var table = document.getElementById('myTable');
            for (var r = 0, n = table.rows.length; r < n; r++) {
                table.rows[r].insertCell(0);
                table.rows[r].cells[0].innerHTML = "&nbsp;&nbsp;";
            }
        }

        function deleteRow() {
            document.getElementById("myTable").deleteRow(0);
        }

        function deleteColumn() {
            // var row = document.getElementById("myRow");
            var table = document.getElementById('myTable');
            for (var r = 0, n = table.rows.length; r < n; r++) {
                table.rows[r].deleteCell(0); // var table handle
            }
        }
    </script>

    <body>
        <input type="button" value="row +" onClick="addRow()" border=0 style='cursor:hand'>
        <input type="button" value="row -" onClick='deleteRow()' border=0 style='cursor:hand'>
        <input type="button" value="column +" onClick="addColumn()" border=0 style='cursor:hand'>
        <input type="button" value="column -" onClick='deleteColumn()' border=0 style='cursor:hand'>

        <table  id='myTable' border=1 cellpadding=0 cellspacing=0>
            <tr id='myRow'>
                <td>&nbsp;</td>
                <td>&nbsp;</td>
                <td>&nbsp;</td>
            </tr>
            <tr>
                <td>&nbsp;</td>
                <td>&nbsp;</td>
                <td>&nbsp;</td>
            </tr>
        </table>
    </body>
</html>

和细胞。

我已经尝试过了，这对我有用：

var table = document.getElementById("myTable");
var row = table.insertRow(myTable.rows.length-2);
var cell1 = row.insertCell(0);

您可以使用以下示例：

<table id="purches">
    <thead>
        <tr>
            <th>ID</th>
            <th>Transaction Date</th>
            <th>Category</th>
            <th>Transaction Amount</th>
            <th>Offer</th>
        </tr>
    </thead>

    <!--  <tr th:each="person: ${list}"    >
            <td><li th:each="person: ${list}" th:text="|${person.description}|"></li></td>
            <td><li th:each="person: ${list}" th:text="|${person.price}|"></li></td>
            <td><li th:each="person: ${list}" th:text="|${person.available}|"></li></td>
            <td><li th:each="person: ${list}" th:text="|${person.from}|"></li></td>
            </tr>
    -->

    <tbody id="feedback">
    </tbody>
</table>

JavaScript文件：

$.ajax({
    type: "POST",
    contentType: "application/json",
    url: "/search",
    data: JSON.stringify(search),
    dataType: 'json',
    cache: false,
    timeout: 600000,
    success: function (data) {
        //  var json = "<h4>Ajax Response</h4><pre>"  + JSON.stringify(data, null, 4) + "</pre>";
        // $('#feedback').html(json);
        //
        console.log("SUCCESS: ", data);
        //$("#btn-search").prop("disabled", false);

        for (var i = 0; i < data.length; i++) {
            //$("#feedback").append('<tr><td>' + data[i].accountNumber + '</td><td>' + data[i].category + '</td><td>' + data[i].ssn + '</td></tr>');
            $('#feedback').append('<tr><td>' + data[i].accountNumber + '</td><td>' + data[i].category + '</td><td>' + data[i].ssn + '</td><td>' + data[i].ssn + '</td><td>' + data[i].ssn + '</td></tr>');

            alert(data[i].accountNumber)
        }
    },
    error: function (e) {
        var json = "<h4>Ajax Response</h4><pre>" + e.responseText + "</pre>";
        $('#feedback').html(json);

        console.log("ERROR: ", e);
        $("#btn-search").prop("disabled", false);
    }
});

添加列，添加行，删除列，删除行。最简单的方法

    function addColumn(myTable) {
      var table = document.getElementById(myTable);
      var row = table.getElementsByTagName('tr');
      for(i=0;i<row.length;i++){
        row[i].innerHTML = row[i].innerHTML + '<td></td>';
      }
    }
    function deleterow(tblId)
    {
        
      var table = document.getElementById(tblId);
      var row = table.getElementsByTagName('tr');
            if(row.length!='1'){
                row[row.length - 1].outerHTML='';
            }
    }
    function deleteColumn(tblId)
    {
        var allRows = document.getElementById(tblId).rows;
        for (var i=0; i<allRows.length; i++) {
            if (allRows[i].cells.length > 1) {
                allRows[i].deleteCell(-1);
            }
        }
    }
    function myFunction(myTable) {
      var table = document.getElementById(myTable);
      var row = table.getElementsByTagName('tr');
      var row = row[row.length-1].outerHTML;
      table.innerHTML = table.innerHTML + row;
      var row = table.getElementsByTagName('tr');
      var row = row[row.length-1].getElementsByTagName('td');
      for(i=0;i<row.length;i++){
        row[i].innerHTML = '';
      }
    }

    table, td {
      border: 1px solid black;
      border-collapse:collapse;
    }
    td {
      cursor:text;
      padding:10px;
    }
    td:empty:after{
      content:"Type here...";
      color:#cccccc;
    }

   <!DOCTYPE html>
    <html>
    <head>
    </head>
    <body>
    <form>
    <p>
    <input type="button" value="+Column" onclick="addColumn('tblSample')">
    <input type="button" value="-Column" onclick="deleteColumn('tblSample')">
    <input type="button" value="+Row" onclick="myFunction('tblSample')">
    <input type="button" value="-Row" onclick="deleterow('tblSample')">
    </p>
    <table id="tblSample" contenteditable><tr><td></td></tr></table>
    </form>

    </body>
    </html>

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