What reason is there to use null instead of undefined in JavaScript?

Question

I\'ve been writing JavaScript for quite a long time now, and I have never had a reason to use null. It seems that undefined is always preferable an

Answer 1

A few have said that it is ok to initialise objects to null. I just wanted to point out that destructuring argument defaults don't work with null. For example:

const test = ({ name } = {}) => {
  console.log(name)
}

test() // logs undefined
test(null) // throws error

This requires performing null checks prior to calling the function which may happen often.