What does replace(/\n/g, "something") mean?

Question

I've come across this code many times and have never figured out what it means

/\n/g

Answer 1

This will replace all new line character in your string with "something" . i.e

var str="Hi\nHello";
console.log(str);

Output:

Hi

Hello

console.log(str.replace(/\n/g,"and"));

Output:

HiandHello

console.log(str.replace(/\n/g,""));

Output:

HiHello