JSFiddle - React, Tailwind, and code Playground
HTML
<script>
function setFries(){
var el = document.getElementById("burger");
if(el.checked)
document.getElementById("completed").disabled = false;
else
document.getElementById("completed").disabled = true;
}
</script>
<input type="checkbox" name="o1" id="burger" onchange="setFries();"/>Prize Award
<input type="checkbox" name="e1" id="completed" disabled="disabled" />Burger