WeakMap.prototype.set()

The set() method adds a new element with a specified key and value to a WeakMap object.

wm.set(key, value);

key

Required. Must be object. The key of the element to add to the WeakMap object.

value

Required. Any value. The value of the element to add to the WeakMap object.

The WeakMap object.

var wm = new WeakMap();
var obj = {};

// Add new elements to the WeakMap
wm.set(obj, 'foo').set(window, 'bar'); // chainable

// Update an element in the WeakMap
wm.set(obj, 'baz');

• WeakMap
• WeakMap.prototype.get()
• WeakMap.prototype.has()