checked
The checked boolean attribute sets a checkbox or radio button as initially selected.
Syntax
checkedExamples
<input type="checkbox" name="news" checked> Subscribe
<input type="radio" name="plan" value="pro" checked> Pro
Output
Renders the checkbox ticked and the Pro radio button pre-selected.
Notes
This sets the initial state only; the live state is element.checked in JavaScript. Within a radio group only one button should carry checked.
Browser & runtime support
| Environment | Since version |
|---|---|
| chrome | 1.0 |
| firefox | 1.0 |
| safari | 1.0 |
| edge | 12 |