HTML <input>checked Attribute

The checked attribute is used to preselect a checkbox or radio button when a webpage loads. It helps in setting default choices in forms.

• Automatically selects a checkbox or radio button by default.
• Mainly used with <input type="checkbox"> and <input type="radio">.
• It is a boolean attribute, so its presence alone makes the input checked.

Syntax:

<input type = "checkbox|radio" checked> 

Example: The first checkbox is checked by default using checked, while the second checkbox is unchecked by default.