How do I replace all line breaks in a string with elements?

Question

How can I read the line break from a value with JavaScript and replace all the line breaks with
elements?

Example:

A variable passe

Answer 1

It will replace all new line with break

str = str.replace(/\n/g, '
')

If you want to replace all new line with single break line

str = str.replace(/\n*\n/g, '
')

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