$('#cc1').combobox({
onClick: function(record){
//Change values in other comboboxes
$('#cc1').combobox('setValue', record.value1);
$('#cc2').combobox('setValue', record.value2);
//Load new values in other comboboxes
$('#cc1').datagrid({url:"yourscript.php?id="+record.id});
//This can be json, php or set by your javascript code
}
});
Refer demo
https://jeasyui.com/demo/main/index.php?plugin=ComboBox&theme=material-teal&dir=ltr&pitem=&sort=asc