<input type="checkbox" name="vehicle3" value="Boat" checked> #If if helps you give it Thumbs up
<!-- Add checked tag --> <input type="checkbox" name="vehicle3" value="Boat" checked>
<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
<input type="checkbox" name="vehicle1" value="Bike"> The checkbox value is 'Bike'.