Question

我使用insertAfter（根据How to do insert After() in JavaScript without using a library?），但就我而言，它并不起作用。

为什么？

<!doctype html>
<html lang="en">
    <head></head>
    <body>
        <table id="myTable">
            <tbody>
                <tr>
                    <td></td>
                    <td></td>
                </tr>
                <tr>
                    <td></td>
                    <td></td>
                </tr>
            </tbody>
        </table>
        <script>
            function insertAfter(newNode, referenceNode) {
                referenceNode.parentNode.insertBefore(newNode, referenceNode.nextSibling);
            }

            _table = document.getElementById("myTable");
            _tbody = _table.getElementsByTagName("tbody")[0];
            n = _tbody.getElementsByTagName("TR").length;
            _referenceNode = _tbody.getElementsByTagName("TR")[n - 1]

            _newTR = "<tr><td>A very complex table<td></td><td>much more complex than in this example</td></tr>";

            parser = new DOMParser()
            _newNode = parser.parseFromString(_newTR, "text/xml");

            insertAfter(_newNode, _referenceNode);
        </script>
    </body>
</html>

Answer 1

_newNode是一个XML文档。您无法像这样直接在{1}}中插入#document。（否则您会收到此错误：Uncaught HierarchyRequestError: Failed to execute 'insertBefore' on 'Node': Nodes of type '#document' may not be inserted inside nodes of type 'TBODY'.）

尝试使用

insertAfter(_newNode.childNodes[0], _referenceNode);

因为XML文档的第一个子元素是您之后的元素。

此外，您的HTML无效。使用：

_newTR = "<tr><td>A very complex table</td><td>much more complex than in this example</td></tr>";

不

_newTR = "<tr><td>A very complex table<td></td><td>much more complex than in this example</td></tr>";

javascript insertAfter无法正常工作

1 个答案: