is a way for web pages to store named key/value pairs locally, within the client web browser
- HTML5 Storage is based on named key/value pairs.
- You store data based on a named key, then you can retrieve that data with the same key.
- The named key is a string.
- The data can be any type supported by JavaScript, including strings, Booleans, integers, or floats.
- However, the data is actually stored as a string
- If you are storing and retrieving anything other than strings, you will need to use functions like parseInt() or parseFloat() to coerce your retrieved data into the expected JavaScript datatype.
- Calling setItem() with a named key that already exists will silently overwrite the previous value. Calling getItem() with a non-existent key will return null rather than throw an exception.
- Local storge has four basic methods
A StorageEvent is sent to a window when a storage area it has access to is changed within the context of another document.
