# Store data in the browser with CACHE, PREF and COOKIES
> Keep values between visits with CACHE (expiring), PREF (user preferences) and COOKIES.
Framework: jcomponent20
Product: jComponent 20 (jcomponent@20)
Language: en
Content-SHA256: bdb8f20a9c8cdbd741b0e9c31c4c330560cfbbead4075c9e1a7b00df8746650a
Snapshot: c0700e321579725c5cf4f5ace1ad7d2866d1b4f93c24a63c0b41b6b7998e976c
Sources: jcomponent20@3fedd009a277f50fddc608b97afbec553b67c51b
Review: not-recorded
Three helpers store data in the browser:
- `CACHE(key, value, expiration)` stores any value for a period (`'10 minutes'`, `'1 day'`) and `CACHE(key)` reads it, giving `null` once it expired. The data lives in the browser storage, so it survives a reload.
- `PREF.set(name, value)` stores a user preference for a year; read it back as `PREF.name`.
- `COOKIES.set(name, value, expiration)`, `COOKIES.get(name)` and `COOKIES.rem(name)` work with real cookies, which the server receives on every request.
```html public/index.html
jComponent
```