`window.location.href` in client vs `res.redirect` in express

I want to send user to a certain link, there are 2 ways to getting there:

1. Browser Client Approach

• I call express endpoint /redirect
• It calculates the url to redirect to
• It returns the url to redirect to
• Client browser redirects via window.location.href

2. Express Server Approach

• I call express endpoint /redirect
• It calculates the url to redirect to
• It calls res.redirect(url)

Which is the best way? Is there any significant differences between these?

The current use case I’m looking into has documentation which showed the 2. express example. However I saw some use cases where the 1. browser approach is used