const obj = { foo: 1 };
obj.bar = 2;
const speed = 'quick'; `The ${speed} brown fox jumps over the lazy dog.`
typeof (new (class F extends (String, Array) { })).substring
typeof (function* f() { yield f })().next().next()
const PI = 3.14;
console.log(PI) // Печатает 3.14
let some_text = "some string";
if(some_text.indexOf('str') !=-1){
return true;
}
let a = 12, b = 3;
[a, b] = [b, a];
let point = [1,3], segment = [point,[5,5]], triangle = [...segment,[1,8]];
const [a, , b] = [1, 2, 3];
console.log(a, b);