Sets additional attributes for the tag.
| Value | Use |
|---|---|
| null | prevents the attribute from being added to the tag |
| array | adds each item in the array as an attribute & value |
$attr = [
'tabindex' => '0',
'role' => 'button',
'aria-pressed' => 'false'
];<tag tabindex="0" role="button" aria-pressed="false" {...}