How to Export a JavaScript Array as a CSV File Client-Side?

Exporting JavaScript Array Data to CSV Client-Side

Question:

How can you export data stored in a JavaScript array as a CSV (Comma-Separated Values) file, particularly when using JavaScript?

Answer:

To export JavaScript array data to CSV on the client side, follow these steps:

1. Parse Array into CSV Format: Convert the array of arrays into CSV format. Each row in the array should be joined into a string separated by commas.
2. Create CSV File Content: Create the CSV file content by appending each CSV row line by line with a carriage return (rn) delimiter.
3. Encode CSV Content: URI-encode the CSV file content to ensure that it is valid for download.
4. Open CSV File: Use the window.open function to open the encoded CSV content in a new window or tab. This will automatically prompt the user to download the file.

Alternative Method for Custom File Name:

If you want to specify a custom file name for the CSV file, consider the following approach:

1. Create a hidden DOM node.
2. Set the href attribute of the node to the encoded CSV content.
3. Set the download attribute of the node to the desired file name.
4. Click the node using JavaScript to simulate the user's action of downloading the file.

Using this method, you can download a CSV file with the specified name without opening a new window or tab

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