The clear() method removes all elements from a Set object.
Syntax
mySet.clear();Return value
Examples
Using the clear method
var mySet = new Set();
mySet.add(1);
mySet.add('foo');
mySet.size;       // 2
mySet.has('foo'); // true
mySet.clear();
mySet.size;       // 0
mySet.has('bar')  // false
Specifications
| Specification | Status | Comment | 
|---|---|---|
| ECMAScript 2015 (6th Edition, ECMA-262) The definition of 'Set.prototype.clear' in that specification. | Standard | Initial definition. | 
| ECMAScript Latest Draft (ECMA-262) The definition of 'Set.prototype.clear' in that specification. | Draft | 
Browser compatibility
| Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari | 
|---|---|---|---|---|---|---|
| Basic support | 38 | (Yes) | 19.0 (19.0) | 11 | 25 | 7.1 | 
| Feature | Android | Chrome for Android | Edge | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile | 
|---|---|---|---|---|---|---|---|
| Basic support | No support | 25 | (Yes) | 19.0 (19.0) | No support | No support | 8 |