How do I format a string to be multi-line in a JavaScript prompt?

Question

I'm trying to offer the user multi-line selectable text using a prompt() dialog. I will format the text in JavaScript, insert special characters and then throw up the prompt and all the user has to do is hit Ctrl-C, because the text is already selected.

When the prompt is displayed, the selectable text will look like this:

Line1□Line2□Line3□

where the □ is the newline character. It all gets displayed in one line, so it's easily selectable, but pasting it into Notepad or any other text editor should result in this:

Line1
Line2
Line3

I tried \\r and \\n and even \\r\\n , but it seems to truncate it to the first line.

How can I do this?

Answer 1

无效： prompt()为单行。

Answer 2

您可以使用Ctrl + C （至少在Windows上）复制对话框的内容（例如JavaScript中的alert() ）。