# react/jsx-no-duplicate-props

📝 Disallow duplicate properties in JSX.

💼 This rule is enabled in the ☑️ `recommended` [config](https://github.com/jsx-eslint/eslint-plugin-react/#shareable-configs).

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Creating JSX elements with duplicate props can cause unexpected behavior in your application.

## Rule Details

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

```jsx
<Hello name="John" name="John" />;
```

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

```jsx
<Hello firstname="John" lastname="Doe" />;
```

## Rule Options

```js
...
"react/jsx-no-duplicate-props": [<enabled>, { "ignoreCase": <boolean> }]
...
```

### `ignoreCase`

When `true` the rule ignores the case of the props. Default to `false`.

## When Not To Use It

If you are not using JSX then you can disable this rule.