JSFiddle - React, Tailwind, and code Playground
HTML
<script src="http://alasql.org/console/alasql.min.js"></script>
<span id="result"></span>
JavaScript
var groups = [{id:4, name:"abcd", id_group:"1"},
{id:5, name:"efgh", id_group:"1"},
{id:6, name:"ijkl", id_group:"1"},
{id:4, name:"abcd", id_group:"2"},
{id:7, name:"mnop", id_group:"2"}];
var res = alasql('select id_group, count(id) as cnt from ? where id in (4,7)\
group by id_group having count(id) = 2',[groups]);
document.getElementById('result').textContent = JSON.stringify(res);