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// Create new set
const animals = new Set();
// Add to set
animals.add('cat');
animals.add('dog');
// Remove from set
animals.delete('cat'); // returns true
animals.delete('dog'); // returns true
animals.delete('horse'); // returns false
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const set = new Set([1, 2, 3, 4, 5]);
set.delete(3);
console.log(set); // Outputs: Set(4) { 1, 2, 4, 5 }