Local storage front calls

This section describes front calls to store data on the front-end platform.

Key/Value pairs can be stored locally on the front-end side with the localStorage front calls.

Local storage is supported by all front-ends.

The data is stored on the platform where the front-end executes, and is persistent across application sessions.

This feature can for example be used to keep a trace of the authenticated users, if the authentication mechanism is written in Genero.

The table shows the functions implemented by all front-ends in the "localStorage" module.

Table 1. localStorage module front-end functions
Function Name	Description
`ui.Interface.frontCall("localStorage", "clear", [], [])`	Removes all local storage key/value pairs.
`ui.Interface.frontCall("localStorage", "getItem", [key], [value])`	Returns the current value of local storage key.
`ui.Interface.frontCall("localStorage", "keys", [], [key-list] )`	Returns the list of defined local storage keys.
`ui.Interface.frontCall("localStorage", "removeItem", [key], [])`	Deletes the specified local storage key.
`ui.Interface.frontCall("localStorage", "setItem", [key,value], [])`	Sets a value for local storage key.