How replace HTML with newline character “\n”

Question

How can I replace HTML

or
with new line character \"\\n\"

Answer 1

A cheap function:

function brToNewLine(str) {
    return str.replace(/
/g, "\n");
}

es.

vat str = "Hello
world!";
var result = brToNewLine(str);

The result is: "Hello/nworld!"