The type used by the Window.localStorage and Window.sessionStorage properties. Storage is implemented as a Map<String, String>.
To store and get values, use Dart's built-in map syntax:
window.localStorage['key1'] = 'val1';
window.localStorage['key2'] = 'val2';
window.localStorage['key3'] = 'val3';
assert(window.localStorage['key3'] == 'val3');
You can use Map APIs such as containsValue(), clear(), and length:
assert(window.localStorage.containsValue('does not exist') == false);
window.localStorage.clear();
assert(window.localStorage.length == 0);
For more examples of using this API, see localstorage_test.dart. For details on using the Map API, see the Maps section of the library tour.
Properties
Operators
-
operator [](
String key) → String -
Returns the value for the given
keyor null ifkeyis not in the map.… -
operator []=(
String key, String value) → void -
Associates the
keywith the givenvalue.…
Methods
-
addAll(
Map<String,String> other) → void -
Adds all key-value pairs of
otherto this map.… -
clear(
) → void -
Removes all pairs from the map.…
-
containsKey(
String key) → bool -
Returns true if this map contains the given
key.… -
containsValue(
String value) → bool -
Returns true if this map contains the given
value.… -
forEach(
void f(String key, String value)) → void -
Applies
fto each key-value pair of the map.… -
putIfAbsent(
String key, String ifAbsent()) → String -
Look up the value of
key, or add a new value if it isn't there.… -
remove(
String key) → String -
Removes
keyand its associated value, if present, from the map.…