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+---
+title: isDisjoint
+tags: array,intermediate
+---
+
+Checks if the two iterables are disjointed (have no common values).
+
+- Use the `new Set()` constructor to create a new `Set` object from each iterable.
+- Use `Array.prototype.every()` and `Set.prototype.has()` to check that the two iterables have no common values.
+
+```js
+const isDisjoint = (a, b) => {
+  const sA = new Set(a), sB = new Set(b);
+  return [...sA].every(v => !sB.has(v));
+};
+```
+
+```js
+isDisjoint(new Set([1, 2]), new Set([3, 4])); // true
+isDisjoint(new Set([1, 2]), new Set([1, 3])); // false
+```