# 01. Operators

Выражения вызова и обращения к свойству имеют более высокий приоритет, чем любой из операторов.

![alt text](/files/-M5buS--8xlKNmTRBNAt)

### ??

The **nullish coalescing operator (**`??`**)** is a logical operator that returns its right-hand side operand when its left-hand side operand is [`null`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/null) or [`undefined`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/undefined), and otherwise returns its left-hand side operand.

```javascript
const nullValue = null;
const emptyText = ""; // falsy
const someNumber = 42;

const valA = nullValue ?? "default for A"; // "default for A"
const valB = emptyText ?? "default for B"; // ""
const valC = someNumber ?? 0; // 42
```


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