Formatting phones

phones.js

            phone: {
                get: function() {
                    return this.value;
                },
                // setter
                set: function(newValue) {
                    if (newValue.length === 1) {
                        this.value = "(" + newValue;
                    } else if (newValue.length === 4) {
                        this.value = newValue + ") ";
                    } else if (newValue.length === 9) {
                        // (282) 922-5555
                        // 1234567890
                        this.value = newValue + "-";
                    }
                }
            }