# Operators — JavaScript

Source: https://www.geekswithgeeks.com/en/javascript/js-operators

> Arithmetic, comparison, logical, and modern nullish operators.

## Arithmetic & comparison

Standard math operators plus `**` for exponents, and six comparison operators.

```js
console.log(2 ** 10);          // 1024
console.log(10 % 3);           // 1
console.log(5 > 3 && 2 < 4);   // true
```

## Logical short-circuiting

`&&` and `||` return one of their **operands**, not just true/false — used to pick fallback values.

```js
const name = "" || "Guest";   // "Guest"
const user = { age: 0 };
const age = user.age ?? 18;   // 0, not 18!
```

## ?? vs ||

`??` (nullish coalescing) only falls back on `null`/`undefined`; `||` also falls back on `0`, `""`, `false` — a common bug source.