When trying to fetch data using the REST method, I utilize an AJAX call. While my work is completed, I encounter an issue with validating the "data" within the AJAX call. How can I accomplish this? If there is no data returned from the specified URL, it triggers an error that needs to be resolved.
$.ajax({
'url': url_for_check_available_updates_tab7,
'type':'POST',
'async': false,
'success':function(data){
d = data.getElementsByTagName("col")[0].childNodes[0].nodeValue;
},
error: function() {
$('#no_update').show();
}
});<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>