intercambiar dos variables JavaScript
var a = 1,
b = 2;
b = [a, a = b][0];
Sticky Pingu
var a = 1,
b = 2;
b = [a, a = b][0];var a = 5;
var b = 3;
[a, b] = [b, a];function swap(x, y) {
var t = x;
x = y;
y = t;
return [x, y];
}
console.log(swap(2, 3));let a = "red";
let b = "blue";
let c = a; // red
a = b; //over-rides to blue
b = c;
console.log(a);
console.log(b);