longclaps

На третьей итерации: i=4; j=3;

if (условие) {
    x = (некое значение)
} else {
    x = (другое значение)
}

x = (условие) ? (некое значение) : (другое значение)

let cache = [1, 2, 3];
let items = [1, 3, 4];
let s = new Set(cache);
console.log(items.filter((e) => !s.has(e)));

resolve((recoupment > 0 && probability <= 50 && setWinnerDrop(itemsbot, true))
    || setWinnerDrop(itemsbot, false) || false);

for (var i=0;i<10            ;                i++)
или
for (var i=0;i<10            ,                i++)

let cities = new Set(SHOPS.map(item => item.geoObj));

Ball.prototype.move = function() {
		this.x += this.xSpeed;
		this.y += this.ySpeed;
		if (this.x < 0 || this.x > width) {
			this.xSpeed *= -1;
			this.x += this.xSpeed * 2;
		}
		if (this.y < 0 || this.y > height) {
			this.ySpeed *= -1;
			this.y += this.ySpeed * 2;
		}
	};