The Set.clear() method in JavaScript is used for the removal of all the elements from a set and make it empty. No arguments are required to be sent as parameters to the Set.clear() method and it returns an undefined return value.
Syntax:
mySet.clear()
Parameters: This method does not any accept any parameters.
Return Value: This method returns an undefined value.
Example 1:
Javascript
// Create a new set using Set() constructor let myset = new Set();   // Append new elements to the // set using add() method myset.add(23);   // Print the modified set console.log(myset); console.log(myset.size);   // The clear() method will remove // all elements from the set myset.clear();   // This will return 0 as there // are no elements present in the Set console.log(myset.size); |
Output:
Set(1) { 23 }
1
0
Example 2:
Javascript
// Create a new set using Set() constructor let myset = new Set();   // Append new elements to the // set using add() method myset.add("Manchester"); myset.add("London"); myset.add("Leeds");   // Print the modified set console.log(myset); console.log(myset.size);   // The clear() method will remove // all elements from the set myset.clear();   // This will return 0 as the set is empty console.log(myset.size); |
Output:
Set(3) { 'Manchester', 'London', 'Leeds' }
3
0
Supported Browsers:
- Google Chrome: Â 38+
- Firefox: 19+
- Internet Explorer: 11+
- Opera: 25+
- Edge: 12+
- Safari: 08+
We have a complete list of Javascript Set methods, to check those please go through this Sets in JavaScript article.
We have a Cheat Sheet on Javascript where we covered all the important topics of Javascript to check those please go through Javascript Cheat Sheet-A Basic guide to JavaScript. Â
