let [a, b, c] = [1, 2, 3]; console.log('abc'.charAt(0)) var s = 'Hello world!'; console.log(s.includes('o')) console.log(s.startsWith('Hello')) console.log(s.endsWith('d')) console.log('hello'.repeat(5)) let arrayLike = { '0': 'a', '1': 'b', '2': 'c', length:3 }; console.log(Array.from(arrayLike)) console.log(Array.of(3,9,6)) function add(pp, ...values) { console.log(values) for (var val of values) { console.log(val) } } add(6,8,9)