JSFiddle - React, Tailwind, and code Playground

HTML

<div>Hello <a class="del" data-rel="1" href="#">удалить</a></div>

JavaScript

$(document).ready(function () {
    $('.del').on('click',function(){
        var delItem = $(this),
            id = delItem.data('rel');
           
        $.post('http://fiddle.jshell.net', {'id':id}, function(o) { 
            console.log('All good', delItem);
            delItem.parent().remove();        
        }).fail(function () {
            console.log('Ops have problem', delItem);
            delItem.parent().remove();
        });
        return false;
    }); 
});