w3schools checkbox checked code example

Example 1: how to set checkbox checked

<input type="checkbox" name="vehicle3" value="Boat" checked>

#If if helps you give it Thumbs up

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

Example 3: html checkbox checked

<input type="checkbox" name="ok" value="ok">
<label for="ok">I agree</label>