WeakMap.prototype.clear()

The clear() method used to remove all elements from a WeakMap object, but is no longer part of ECMAScript and its implementations.

Syntax

wm.clear();

Examples

Using the clear method

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

wm.set(obj, "foo");
wm.set(window, "bar");

wm.has(obj); // true
wm.has(window); // true

wm.clear();

wm.has(obj)  // false
wm.has(window)  // false

Specifications

Not part of any current specification or draft. This method was part of the ECMAScript 6 draft specification until revision 28 (version of October 14, 2014), but has been removed in later versions of the draft. It will not be part of the final standard.

Browser compatibility

[1] The clear() method has been supported from version 20 until version 45 (including).

See also

• WeakMap