jquery - Send email confirmation through JavaScript/HTML? -

i want email sent users register on app (just test app) receive email of confirmation.

i not quite sure how go have thought need implement javascript within register function?

i have posted javascript , html code involved in registration process, appreciate assistance here.

(using html, javascript, phonegap, jquerymobile)

thanks.

html -

 <form onsubmit="registeruser(); return false;">         <label for="txtusername">username</label>         <input type="text" id="txtusername">   <input type="submit" value="check availability" data-mini="true" onclick="return checkuser()">         <br>         <label for="txtfirstname">first name</label>         <input type="text" id="txtfirstname">         <label for="txtlastname">surname</label>         <input type="text" id="txtlastname" >         <label for="txtemail">email</label>         <input type="email" id="txtemail" >         <label for="txtpassword">password</label>         <input type="password" id="txtpassword" >         <label for="passwordconfirm">confirm password</label>         <input type="password" id="passwordconfirm" >         <input type="submit" value="register user">         <input type="submit" value="delete" onclick="return deleteuser()">     </form> 

javascript -

 function registeruser() {        var username = document.getelementbyid("txtusername").value;        var firstname = document.getelementbyid("txtfirstname").value;        var lastname = document.getelementbyid("txtlastname").value;        var email = document.getelementbyid("txtemail").value;        var password = document.getelementbyid("txtpassword").value;        var confirmpass = document.getelementbyid("passwordconfirm").value;           db = window.opendatabase("soccerearth", "2.0", "soccerearthdb", 2*1024*1024);          db.transaction(function(tx) {           newuser(tx, username, firstname, lastname, email, password, confirmpass);           }, errorregistration, successregistration);           }            function newuser(tx, username, firstname, lastname, email, password, confirmpass) {           var _query = ("insert soccerearth(username, firstname, lastname, email, password, cpass) values ('"+ username +"','"+ firstname +"','"+ lastname +"','"+ email +"', '"+ password +"', '"+ confirmpass +"')");            alert(_query);            tx.executesql(_query);            }            function errorregistration(error) {         navigator.notification.alert(error, null, "got error mate", "cool");             }            function successregistration() {            navigator.notification.alert("user data has been registered", null, "information", "ok");              $( ":mobile-pagecontainer" ).pagecontainer( "change", "#page4" );          } 

javascript running in browser cannot send emails. sumbit data server, can construct , send emails. database should on server. since test app can use apache, mysql, , php running on computer. production app rent server or use backend service.