Drawbacks of auto focusing on a web page's text field (JavaScript)

1. Why is autofocus bad for accessibility?
2. What is autofocus JavaScript?
3. Does autofocus attribute always set focus on first input field in html5 True or false?
4. How does input element gets automatically focused when the page loads?

Why is autofocus bad for accessibility?

Accessibility considerations

Automatically focusing a form control can confuse visually-impaired people using screen-reading technology and people with cognitive impairments. When autofocus is assigned, screen-readers "teleport" their user to the form control without warning them beforehand.

What is autofocus JavaScript?

The autofocus attribute is a boolean attribute. When present, it specifies that the element should automatically get focus when the page loads.

Does autofocus attribute always set focus on first input field in html5 True or false?

The first input or textarea in source order that has the autofocus attribute will be focused on page load. In browsers without autofocus support, no fields will be focused on page load, unless otherwise given focus with JavaScript.

How does input element gets automatically focused when the page loads?

The autofocus attribute is a boolean attribute. When present, it specifies that an <input> element should automatically get focus when the page loads.