Function set

set(key, value): void
JMap.Util.LocalStorage.set

Set the key in local storage.

Set nothing and do nothing if local storage is not available.
Parameters
- key: string
  the item key
- value: string
  the new item value
Returns void
Example
```
// set the value "my value" for the key "my-key"
JMap.Util.LocalStorage.set("my-key", "my value")
```