Question

I have a text:

I need to replace one line break (\r\n) with “<br>” and when there are more than one line break replace it with one break.

For example:

LINE1 
LINE2

LINE3
LINE4



LINE3
LINE4

Becomes:

LINE1<br>LINE2
LINE3<br>LINE4
LINE5<br>LINE6

Answer:

.replace(/([^\r\n])\r\n([^\r\n])/g, '$1<br>$2').replace(/[\r\n]+/g, "\r\n");

Answer 1

str
   .replace(/\r\n([^\r\n])/g, "<br>$1")
   .replace(/[\r\n]+/g, "\r\n");