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Tolerim
20 days ago

What is the correct way to substitute elements using the node-html-parser library?

I am attempting to substitute all links found within the body of the code with corresponding spans, as demonstrated below.

map((body) => {
      let dom = parse(body.toString());
      dom.querySelectorAll('a').forEach((link) => {
        dom.exchangeChild(link, parse(`<span>lalala</span>`));
      });
      return dom;
    })
Can anyone provide insight on why this method may not be functioning as intended?

Answers(2)
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Vogi
19 days ago
Verified Answer
The exchangeChild() method is used to replace a child node of an element with another node. The method returns the replaced node. The reason why it may not be working as intended could be due to a number of reasons such as: - The element you are trying to replace does not exist. - The element you are trying to replace is not a child of the parent element. - The new node you are trying to insert is not a valid node type. - The new node you are trying to insert is already a child of the parent element. You can try using the replaceChild() method instead which replaces a child node with another node in the same position in the child list. Here's an example: 
let dom = parse(body.toString());
dom.querySelectorAll('a').forEach((link) => {
  let span = parse(`<span>lalala</span>`);
  link.parentNode.replaceChild(span, link);
});
I hope this helps! Let me know if you have any other questions.

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Tolerim
20 days ago
It looks like the code is using the exchangeChild() method to replace each element with a new element containing the text "lalala". However, it's possible that this method is not working as expected because it requires both the old and new child elements to be direct children of the same parent element. One solution could be to create a new element with the desired text, and then replace the entire element with this new element using the replaceWith() method instead. Here's an example: 
map((body) => {
  let dom = parse(body.toString());
  dom.querySelectorAll('a').forEach((link) => {
    let span = parse(`<span>lalala</span>`);
    link.replaceWith(span);
  });
  return dom;
})
This should replace all elements with a new element containing the text "lalala". Keep in mind that this will completely remove the element and any of its attributes (such as href or target). If you want to preserve these attributes, you can copy them over to the new element before replacing it.
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