I'm puzzled by the mathematical process behind this JavaScript code, which results in -11.
let x = 2;
let y = 4;
console.log(x -= y += 9)I'm puzzled by the mathematical process behind this JavaScript code, which results in -11.
let x = 2;
let y = 4;
console.log(x -= y += 9)Let's simplify the process:
a += 7
a = a + 7
a = 10 + 7
a = 17
b -= a
b = b - a
b = 5 - 17
b = -12
Consider approaching it from a different angle
let a = 2;
let b = 4;
let c = a -= (b += 8);
console.log(c);
The value inside the parentheses is being added to b, making it 12. Then we're assigning c as a decreased by 12, resulting in -10.
However, there are much better ways to express this logic!
Initially, the process begins by adding 9 to y, resulting in 4 + 9 = 13. Next, it calculates x by subtracting y from it, leading to 2 - 13 = -11, thus yielding an answer of -11.
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