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Interface Storage

public interface Storage

The Storage interface of the Web Storage API provides access to the session storage or local storage for a particular domain, allowing you to for example add, modify or delete stored data items.

Method Summary

Modifier and Type	Method and Description
void	clear() Will empty all keys out of the storage.
java.lang.String	getItem(java.lang.String key) Returns the value for the given key which is currently stored in the storage
int	getLength() Returns an integer representing the number of data items stored in the Storage object.
java.lang.String	key(int index) It will return the name of the nth key in the storage.
void	removeItem(java.lang.String key) Removes the given key from the storage.
void	setItem(java.lang.String key, java.lang.String data) The method will add that key to the storage, or update that key's value if it already exists

Method Detail

getLength

int getLength()

Returns an integer representing the number of data items stored in the Storage object.

Returns:

The number of data items stored in the Storage object.

clear

void clear()

Will empty all keys out of the storage.

getItem

java.lang.String getItem(java.lang.String key)

Returns the value for the given key which is currently stored in the storage

Parameters:

key - The name of the key you want to retrieve the value of.

Returns:

The value of the key. If the key does not exist, null is returned.

key

java.lang.String key(int index)

It will return the name of the nth key in the storage.

Parameters:

index - The number of the key you want to get the name of. This is a zero-based index.

Returns:

The name of the nth key in the storage.

removeItem

void removeItem(java.lang.String key)

Removes the given key from the storage.

Parameters:

key - The name of the key you want to remove.

setItem

void setItem(java.lang.String key,
             java.lang.String data)

The method will add that key to the storage, or update that key's value if it already exists

Parameters:

key - The key of the record which should be stored

data - The data which should be stored for the given key.