Class: Map

Methods

clear()

Removes all of the mappings from this map. The map will be empty after this call returns..

containsKey(key)

Returns true if this map contains a mapping for the specified key.

Parameters:

Name	Type	Description
key	String	the key whose presence in this map is to be tested

containsValue(value)

Returns true if this Map maps one or more keys to the specified value.

Parameters:

Name	Type	Description
value	String	the value whose presence in this Map is to be tested

get(key) → {Object}

Returns the value to which the specified key is mapped, or null if this map contains no mapping for the key.

Parameters:

Name	Type	Description
key	String	the key whose associated value is to be returned

Returns:

the value to which the specified key is mapped, or null if this map contains no mapping for the key

Type

Object

keys() → {Array}

Returns a {Array} of the keys contained in this Map.

Returns:

an array of the keys contained in this Map.

Type

Array

mapSize() → {Number}

Returns the number of key-value mappings in this Map.

Returns:

the number of key-value mappings in this Map.

Type

Number

put(key, value)

Associates the specified value with the specified key in this map.

Parameters:

Name	Type	Description
key	String	key with which the specified value is to be associated
value	Object	value to be associated with the specified key

remove(key)

Removes the mapping for a key from this map if it is present.

Parameters:

Name	Type	Description
key	String	key whose mapping is to be removed from the map

values() → {Array}

Returns a {Array} of the values contained in this Map.

Returns:

an array view of the values contained in this map

Type

Array