仅删除空换行符，保留空格

Question

I'm trying to remove extra line breaks, so that texts are one after another, while preserving white spaces (used as indents)

I have the following:

report_text = report_text.split("\n").map($.trim).filter(function(line) { return line != "" }).join("\n");

which will return with lines of text one after another (which is correct), but will also remove my indents (two or more white spaces) because of the $.trim

I don't know of any other way to keep my "indents" and just only remove empty line breaks. Is there a way I can have each line of line string one after another, but preserve all my white spaces.

Answer 1

简单的report_text.replace(/\\n+/g, "\\n")怎么样？

Answer 2

Also you can use this version:

report_text.replace(/(\n)+/g, "$1")

For more information read this article: 'RegExp Capturing Groups' .