---
url: /docs/guide/usage/linter/rules/unicorn/no-nested-ternary.md
---

### What it does

Disallow deeply nested ternary expressions.

Nested ternary expressions that are only one level deep and wrapped in parentheses are allowed by this rule.

### Why is this bad?

Nesting ternary expressions can make code more difficult to understand.

### Examples

Examples of **incorrect** code for this rule:

```javascript
const foo = i > 5 ? (i < 100 ? true : false) : true;
const foo = i > 5 ? true : i < 100 ? true : i < 1000 ? true : false;
```

Examples of **correct** code for this rule:

```javascript
const foo = i > 5 ? (i < 100 ? true : false) : true;
const foo = i > 5 ? (i < 100 ? true : false) : i < 100 ? true : false;
```

## How to use

## Version

This rule was added in v0.0.18.

## References