JavaScript Challenge

Question

❓ CHALLENGE #214

let x = 10;
let y = 5;

x += y -= x *= y;

console.log(x);

Output: -35

Why is the answer -35 and not 25? I'm a beginner in JavaScript.

Answer 1

see the last statement x=x*y, where x's value will be 50. And the statement before it y=y-x, where y's value will be 5-50= -45. And then x =x+y, where x's value willl be 10+(-45) = 10-45 = -35. that's why answer is -35

x=x+y(y-x(x*y))

x=10+y(5-x(10*5))
-> x=10+y(5-50)
-> x=10+(-45)
-> x=10-45
-> x=-35

I hope your question is resolved

Answer 2

Because these expressions are executed from right to left.

Answer 3

Thanks Guys!