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codeql-action/node_modules/eslint-plugin-jsx-a11y/docs/rules/mouse-events-have-key-events.md
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# jsx-a11y/mouse-events-have-key-events | |
💼 This rule is enabled in the following configs: ☑️ `recommended`, 🔒 `strict`. | |
<!-- end auto-generated rule header --> | |
Enforce onmouseover/onmouseout are accompanied by onfocus/onblur. Coding for the keyboard is important for users with physical disabilities who cannot use a mouse, AT compatibility, and screenreader users. | |
## Rule details | |
This rule takes no arguments. | |
### Succeed | |
```jsx | |
<div onMouseOver={ () => void 0 } onFocus={ () => void 0 } /> | |
<div onMouseOut={ () => void 0 } onBlur={ () => void 0 } /> | |
<div onMouseOver={ () => void 0 } onFocus={ () => void 0 } {...otherProps} /> | |
<div onMouseOut={ () => void 0 } onBlur={ () => void 0 } {...otherProps} /> | |
``` | |
### Fail | |
In example 3 and 4 below, even if otherProps contains onBlur and/or onFocus, this rule will still fail. Props should be passed down explicitly for rule to pass. | |
```jsx | |
<div onMouseOver={ () => void 0 } /> | |
<div onMouseOut={ () => void 0 } /> | |
<div onMouseOver={ () => void 0 } {...otherProps} /> | |
<div onMouseOut={ () => void 0 } {...otherProps} /> | |
``` | |
## Accessibility guidelines | |
- [WCAG 2.1.1](https://www.w3.org/WAI/WCAG21/Understanding/keyboard) |