javascript check if array has duplicates
function hasDuplicates(array) {
return (new Set(array)).size !== array.length;
}javascript check if array has duplicates
function hasDuplicates(array) {
return (new Set(array)).size !== array.length;
}javascript check for duplicates in array
function checkIfDuplicateExists(w){
return new Set(w).size !== w.length
}
console.log(
checkIfDuplicateExists(["a", "b", "c", "a"])
// true
);
console.log(
checkIfDuplicateExists(["a", "b", "c"]))
//falseCopyright © 2021 Codeinu
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