438 B
438 B
title, tags
| title | tags |
|---|---|
| isDuplicates | array,intermediate |
Check if there's duplicate values in a flat array.
- Convert original array into a Set.
- The
.size()returns the number of (unique) elements in a Set object. - Compare the lengths of the array and the Set.
function isDuplicates(array) {
return new Set(array).size !== array.length
}
isDuplicates([0,1,1,2]); // 'True'
isDuplicates([0,1,2,3,]); // 'False'