Untitled


<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js">


</head>
<body>
<input type="checkbox" class="onoffswitch-checkbox" name="onoffswitch-checkbox" id="onoffswitch-checkbox"> I have a bike<br>


<script>
$(document).ready(function() {
    $(".onoffswitch-checkbox").click(function() {
        var id = this.id;  //changed here also, just because jQuery is not needed here
        var state = this.checked ? 1 : 0;
        $("#state_span").load("aj.php?id="+id+"&state="+state);
    });
});
</script>


</body>
</html>