SaM1001,
<!DOCTYPE html>
<html>
<head>
<title>Untitled</title>
<meta charset="utf-8">
<style type="text/css">
.widget {
display: none;
}
</style>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script>
$(function() {
var c = $(".checkbox"), d = $(".widget");
c.on("click",function() {
var i = c.index(this);
d.eq(i).toggle()
})
});
</script>
</head>
<body>
<input type="checkbox" class="checkbox" />
<input type="checkbox" class="checkbox" />
<input type="checkbox" class="checkbox" />
<div class="widget" >1</div>
<div class="widget" >2</div>
<div class="widget" >3</div>
</body>
</html>