mdn/ai-feedback

[AI Help] Question: how to add a line break in the HTML browser view of textarea, in all places where there is <br> in the textarea text

Closed this issue · 1 comments

SinanGabel commented

What is the issue with the answer?

textarea.innerHTML = textarea.innerHTML.replace(/&lt;br&gt;/g, "<br>");

should be (add \n):

textarea.innerHTML = textarea.innerHTML.replace(/&lt;br&gt;/g, "\n<br>");

How would you categorize this issue?

  • The answer is harmful / unsafe.
  • The answer is not correct.
  • The answer is not helpful.
  • The answer is outdated.

What did you ask?

  1. how to add a line break in the HTML browser view of textarea, in all places where there is
    in the textarea text

What did AI Help answer?

To add a line break in the HTML browser view of a textarea, you can use the replace() method in JavaScript to replace all occurrences of <br> in the textarea text with the appropriate HTML line break element <br>. Here's an example:

<!DOCTYPE html>
<html>
<body>

<textarea id="myTextarea" rows="4" cols="50">
This is a textarea.<br>
It has multiple lines.<br>
</textarea>

<script>
const textarea = document.getElementById("myTextarea");
textarea.innerHTML = textarea.innerHTML.replace(/&lt;br&gt;/g, "<br>");
</script>

</body>
</html>

In the above example, the replace() method is used with a regular expression /&lt;br&gt;/g to match all occurrences of <br> in the textarea text. The matched occurrences are then replaced with the HTML line break element <br>.

What MDN pages did AI Help consult?

LeoMcA commented

Hey, thanks for filing an issue.

I think the issue here is that the question isn't very specific. I'm having a hard time understanding what you're asking, so I think it's fair enough that the LLM produces an answer that isn't specifically what you want.

I assume your question, asked more specifically, is something like:

I have a textarea, and a preview using the value of the textarea. How do I make the preview show line breaks where those exist in the textarea?

If I ask that, I get a functional response:

To make the preview show line breaks where they exist in the textarea, you can use the white-space CSS property with the value of pre-wrap on the preview element. This will preserve the line breaks and wrap the text accordingly.

Here's an example of how you can achieve this:

<textarea id="myTextarea"></textarea>
<div id="preview"></div>

<style>
  #preview {
    white-space: pre-wrap;
  }
</style>

<script>
  const textarea = document.getElementById('myTextarea');
  const preview = document.getElementById('preview');

  textarea.addEventListener('input', function() {
    preview.textContent = textarea.value;
  });
</script>

In this example, we have a textarea element with the id "myTextarea" and a div element with the id "preview". We set the white-space property of the preview element to pre-wrap in the CSS, which allows line breaks to be displayed.

Then, using JavaScript, we add an event listener to the textarea's "input" event. Whenever the user types or modifies the content in the textarea, the event listener function updates the text content of the preview element with the value of the textarea. The line breaks will be preserved and displayed in the preview.

Remember to adjust the CSS and JavaScript code according to your specific HTML structure and requirements.

I hope this helps! Let me know if you have any further questions.

Let me know if I've misunderstood your request here, and I'll reopen the issue.