new WeakMap(_iterableopt)
Mimics the implementation of a native WeakMap. The only way to achieve this is by putting a property on the key object.
Parameters:
| Name | Type | Attributes | Default | Description |
|---|---|---|---|---|
_iterable |
any |
<optional> |
null | Optional: an iterable whose values will be added to the WeakSet. |
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Methods
delete(_key) → {boolean}
Remove the value for the specified key
Parameters:
| Name | Type | Description |
|---|---|---|
_key |
object | The object to use as key. |
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Returns:
True if the entry was deleted, false otherwise
- Type
- boolean
get(_key)
Get the value for the specified key
Parameters:
| Name | Type | Description |
|---|---|---|
_key |
object | The object to use as key. |
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Returns:
The value, or undefined if the key is not known.
has(_key) → {boolean}
Check if the WeakMap has an entry for the specified key
Parameters:
| Name | Type | Description |
|---|---|---|
_key |
object | The object to use as key. |
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Returns:
True if there is an entry for the key, false otherwise
- Type
- boolean
set(_key, _value) → {module:barejs/polyfill.WeakMap}
Adds a new element with a specified key and value to a WeakMap object.
Parameters:
| Name | Type | Description |
|---|---|---|
_key |
object | The object to use as key. |
_value |
The value to add. |
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Returns:
The WeakMap (for chaining)