Shared cache namespace. This namespace provides a default cache that can be used to set and retrieve objects that will be persisted between reloads of scripts.
Methods
(static) get(key, defaultSupplieropt) → {*|null}
Returns the value to which the specified key is mapped
Examples
Get a previously set value with a default value (times = 0)
let counter = cache.get("counter", () => ({ "times": 0 }));
console.log("Count",counter.times++);Get a previously set object
let counter = cache.get("counter");
if(counter == null){
counter = {times: 0};
cache.put("counter", counter);
}
console.log("Count",counter.times++);Parameters:
| Name | Type | Attributes | Description |
|---|---|---|---|
key |
string | the key whose associated value is to be returned |
|
defaultSupplier |
function |
<optional> |
if the specified key is not already associated with a value, this function will return a default value |
Returns:
the current object for the supplied key, a default value if defaultSupplier is provided, or null
- Type
- * | null
(static) put(key, value) → {*|null}
Associates the specified value with the specified key
Parameters:
| Name | Type | Description |
|---|---|---|
key |
string | key with which the specified value is to be associated |
value |
* | value to be associated with the specified key |
Returns:
the previous value associated with null, or null if there was no mapping for key
- Type
- * | null
(static) remove(key) → {*|null}
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 |
Returns:
the previous value associated with key or null if there was no mapping for key
- Type
- * | null
(static) exists(key) → {boolean}
Checks the mapping for a key from this map.
Parameters:
| Name | Type | Description |
|---|---|---|
key |
string | key whose mapping is to be checked in the map |
Returns:
whether the key has a mapping
- Type
- boolean