javascript - Jquery serialize multiple form and send as JSON with different key -

hi want serialize multiple forms , send json different key.

i want json

"{userdetails:[{'name':'abc'}],contactdetails:[{'mobile':'123456'}]}"  

i tried this

<form id="form1"> name : <input type="text" name="name" /> </form>  <form id="form2"> mobile : <input type="text" name="mobile" /> </form> <input type="button" onclick="submitform();" value="save" /> <script>   function submitform(){         var jsonstring = $('#form1,#form2').serializearray(); } </script> 

serializearray creates array of objects. if want put object, need explicitly. , need call json.stringify convert json.

function submitform() {     var details = {         userdetails: $("#form1").serializearray(),         contactdetails: $("#form2").serializearray()     };     var jsonstring = json.stringify(details);     ... }