Set forEach() method

forEach() method runs a given function for each element in the Set

set.forEach(someFunction);
set.forEach(someFunction, thisArg);

someFunction can be a callback function or it can have the syntax from any of the following

() => { code }
(value) => { code }
(value, key) => { code }
(value, key, set) => { code }

function() { code }
function(value) { code }
function(value, key) { code }
function(value, key, set) { code }

• set is a Set of elements
• forEach is method name
• someFunction is a function
• value is the current value of the element
• key is the current key of the element
• thisArg is value passed to someFunction and can be accessed as this in the the function

Examples

1. iterate over entries of the vowels set

function printElement(value) {
    console.log(value);
}

const fruits = new Set(['apple', 'banana', 'cherry']);
fruits.forEach(printElement);