checkbox true by default code example
Example 1: html checkbox default checked
<!-- Add checked tag -->
<input type="checkbox" name="vehicle3" value="Boat" checked>
Example 2: how to make checkbox checked in html
<input type="checkbox" checked={props.completed} />
#for props completed is true/false , hence if completed is false then checkbox will not be clicked .
# if the checkbox is true it will be will be checked