Скачать или смотреть How to Keep New Line Formatting When Using Copy and Paste in JavaScript

Discover how to properly format text with new lines when copying to clipboard in JavaScript using the `navigator.clipboard.writeText()` method for optimal results in Google Chrome.
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Preserve New Line Formatting in JavaScript Copy and Paste

If you've ever tried copying text that includes line breaks, you might have encountered a frustrating issue: when you paste that text into applications like Notepad or Outlook, everything shows up on a single line. This is a common problem faced by developers who want to ensure that the formatting of their text is preserved when copied to the clipboard. In this guide, we will discuss how to solve this problem specifically for Google Chrome users.

The Problem with Copy and Paste

When copying text containing new line characters (\n) to the clipboard using certain methods in JavaScript, such as document.execCommand('copy'), the line breaks may not be properly recognized by the paste target. As a result, pasted text appears as one contiguous line, making it difficult to read and use.

The Solution: Using navigator.clipboard.writeText()

To ensure that new line formatting is preserved when copying text, you can use the navigator.clipboard.writeText() method instead of the traditional document.execCommand(). This modern and more reliable approach allows you to directly write text to the clipboard with proper formatting.

Step-by-Step Implementation

Here is how you can implement this solution in your code:

1. Use the Correct Clipboard API

Replace your existing copy function with the following code:

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2. Text String with New Lines

Make sure your string includes the new line characters where needed. For example:

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3. Update the HTML Code

Ensure your button calls the updated copy function correctly:

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Why This Works

Modern API: The navigator.clipboard API is designed to function smoothly across modern browsers, especially Google Chrome, and handles text more effectively.

Promises: The method returns a Promise, allowing you to catch any errors involved in copying text, ensuring greater reliability.

Example Code

Here's how your complete JavaScript function and HTML button will look:

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Conclusion

By utilizing navigator.clipboard.writeText(), you can easily maintain the desired new line formatting when copying text to the clipboard in your JavaScript applications on Google Chrome. This technique not only resolves the formatting issue but also enhances the overall user experience. So next time you need to copy and paste text with multiple lines, remember this powerful method!