JavaScript WeakSet Reference
JavaScript WeakSet is used to store a collection of objects. It adapts the same properties as that of a set i.e. does not store duplicates. The major difference between WeakSet and a set is that a WeakSet is a collection of objects and not values of some particular type.
Syntax:
weakSet.function();Example: In this example, we will use the JavaScript weakSet() method.
// Constructing a weakSet() object
const A = new WeakSet();
// Constructing new objects
const object1 = {};
// Adding the new object to the weakSet
A.add(object1);
// Checking whether the new object is present
// in the weakSet or not
console.log(A.has(object1));
Output
true
The complete list of JavaScript WeakSet is listed below:
JavaScript WeakSet Constructor: In JavaScript, a constructor gets called when an object is created using the new keyword.
| Constructor | Description |
|---|---|
| weakSet() | A constructor gets called when an object is created using the new keyword. |
JavaScript WeakSet Properties: A JavaScript property is a member of an object that associates a key with a value. There is no static property in the weakSet only instance property.
- Instance Properties: An instance property is a property that has a new copy for every new instance of the class.
| Instance Property | Description |
|---|---|
| constructor | Return the wekaMap constructor function for the object. |
JavaScript WeakSet Method: JavaScript methods are actions that can be performed on objects.
- Instance Method: If the method is called on an instance of a WeakSet then it is called an instance method of WeakSet.
| Instance Method | Description |
|---|---|
| add() | Add an object at the end of an object WeakSet. |
| delete() | Delete a specific element from a weakSet object. |
| has() | Return a boolean value indicating whether an object is present in a weakSet or not. that |
