How can a Javascript object become iterable with for…of statement? [duplicate]

Answer 1

If you dont want to use generator syntax, you can use another way define iterator function.

    var options = {
        male: 'John',
        female: 'Gina',
        rel: 'Love',
        [Symbol.iterator]: function () {
            var self = this;
            var values = Object.keys(this);
            var i = 0;
            return {
                next: function () {
                    return {
                        value: self[values[i++]],
                        done: i > values.length
                    }
                }
            }
        }
    };

    for (var p of options) {
        console.log(`Property ${p}`);
    }