You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
37 lines
1.1 KiB
37 lines
1.1 KiB
# no-redundant-roles |
|
|
|
Some HTML elements have native semantics that are implemented by the browser. This includes default/implicit ARIA roles. Setting an ARIA role that matches its default/implicit role is redundant since it is already set by the browser. |
|
|
|
## Rule details |
|
|
|
The default options for this rule allow an implicit role of `navigation` to be applied to a `nav` element as is [advised by w3](https://www.w3.org/WAI/GL/wiki/Using_HTML5_nav_element#Example:The_.3Cnav.3E_element). The options are provided as an object keyed by HTML element name; the value is an array of implicit ARIA roles that are allowed on the specified element. |
|
|
|
```js |
|
{ |
|
'jsx-a11y/no-redundant-roles': [ |
|
'error', |
|
{ |
|
nav: ['navigation'], |
|
}, |
|
], |
|
} |
|
``` |
|
|
|
### Succeed |
|
```jsx |
|
<div /> |
|
<button role="presentation" /> |
|
<MyComponent role="main" /> |
|
``` |
|
|
|
### Fail |
|
```jsx |
|
<button role="button" /> |
|
<img role="img" src="foo.jpg" /> |
|
``` |
|
|
|
## Accessibility guidelines |
|
General best practice (reference resources) |
|
|
|
### Resources |
|
- [ARIA Spec, ARIA Adds Nothing to Default Semantics of Most HTML Elements](https://www.w3.org/TR/using-aria/#aria-does-nothing)
|
|
|