如何从 DOMNode 获取innerHTML

发布于 2024-11-19 20:44:35 字数 612 浏览 3 评论 0原文

我试图用元素替换 DOMDocument 中的所有元素。执行此操作的最佳方法似乎是使用 getElementsByTagName 获取所有元素，然后创建新元素来替换它们。

问题是，我看不到从被替换的元素中获取innerHTML。 nodeValue 和 textContent 都返回内部文本，但内部标签被剥离。如何从 DOMElement 获得类似于“innerHTML”的内容？

示例代码：

function convertTags($doc, $type) {

$bad_nodes = $doc->getElementsByTagName($type); 

foreach($bad_nodes as $bad_node) {
    $good_node = $doc->createElement("bar", $bad_node->nodeValue);
    $bad_node->parentNode->replaceChild($good_node, $bad_node); 
}

return $doc;
}

原文

I'm attempting to replace all <foo> elements in a DOMDocument with <bar> elements. The best way to do this seems to be to grab all the <foo> elements with getElementsByTagName and then create new elements to replace these with.

The problem is, I can't see to grab the innerHTML from the element which is being replaced. nodeValue and textContent both return the inner text, but the inner tags get stripped away. How can a I get something similar to "innerHTML" from a DOMElement?

Sample code:

function convertTags($doc, $type) {

$bad_nodes = $doc->getElementsByTagName($type); 

foreach($bad_nodes as $bad_node) {
    $good_node = $doc->createElement("bar", $bad_node->nodeValue);
    $bad_node->parentNode->replaceChild($good_node, $bad_node); 
}

return $doc;
}

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落在眉间の轻吻 2024-11-26 20:44:35

我认为你可以通过像实际节点一样对待它们来做得更好：

$good_node = $doc->createElement('bar');
foreach( $bad_node->childNodes as $kid )
{
    $good_node->appendChild( $kid );
}

I think you could do better by treating them like actual nodes:

$good_node = $doc->createElement('bar');
foreach( $bad_node->childNodes as $kid )
{
    $good_node->appendChild( $kid );
}

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圈圈圆圆圈圈 2024-11-26 20:44:35

使用 DOMDocument::saveHTML() 方法，并指定要转储的节点。如果我了解您要从中提取 HTML 的示例中的哪些节点，请尝试以下操作：

foreach($bad_nodes as $bad_node) {
    $good_node = $doc->createElement("bar", $bad_node->nodeValue);
    $bad_node->parentNode->replaceChild($good_node, $bad_node); 

    // Call saveHTML on the node you want to dump.
    $doc->saveHTML($bad_node);

}

Use the DOMDocument::saveHTML() method, and specify the node you want to dump. If I understand which of the nodes in your example you're looking to extract the HTML from, try something like:

foreach($bad_nodes as $bad_node) {
    $good_node = $doc->createElement("bar", $bad_node->nodeValue);
    $bad_node->parentNode->replaceChild($good_node, $bad_node); 

    // Call saveHTML on the node you want to dump.
    $doc->saveHTML($bad_node);

}

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