keys < Set < JavaScript

The keys() method of a Set returns an iterator object that contains the values in the set in insertion order. It is an alias for values().

    
    const months = new Set(['Jan', 'Feb', 'March']);

    // iterator object
    const monthsKeys = months.keys();

    for (const month of monthsKeys) {
      console.log(month);
    }
    // "Jan"
    // "Feb"
    // "March"