What is the output of the following? “`js const s = new Set([1, 2, 2, 3, 3, 3]); console.log([…s]); console.log(s.size); “`

Question

JavaScript Developer — Hard

What is the output of the following? “`js const s = new Set([1, 2, 2, 3, 3, 3]); console.log([…s]); console.log(s.size); “`

Accepted Answer

The output of the code is [1,2,3] and 3. The Set object in JavaScript only stores unique values, so duplicates are removed. The size property of the Set object returns the number of unique elements.