CCNA, CCNP, MCSA, CCNA Final Exam, All Answer Test Module With 100/100

I try to validate a field with ajax and a function which verify that the value is not already in base. All examples I found are with php ; how to do with java ? JSP code : <form id="FLoginNew" action="Loginnew" method="post"> ..... <script> $(document).ready(function(e) { $("#FLoginNew").validationEngine('attach', {promptPosition : "centerRight", scroll: false, validationEventTrigger: "blur", autoHidePrompt:true, autoHideDelay:3000 }); }); </script> jquery.ValidationEngine-fr.js altered : "ajaxLoginCall": { "url": "myapp.selvlets.DoublonLoginServlet", "extraDataDynamic": ['#login'], "alertText": "* Ce login est déjà pris", "alertTextOk": "* Ce login est disponible", "alertTextLoad": "* Chargement, veuillez att...