Are there any drawbacks to using localStorage instead of Cookies?

Question

On my previous websites, I used to use a cookie to display a pre-home page only on the first visit. That worked great (see for example here), but using cookies is not so tre

Answer 1

One point to add, unlike cookie normally shared cross protocol, the storages stick to same-origin policy. As a consequence sites share the same domain but hosted on different protocol do not share the stored data.

Say if your website need to work across http and https. For example, when user clicked the "purchase link" they will land on https secured checkout, then the checkout won't be able to retrieve the data previously stored on http site, even when they share the same domain.