json = {};
json.name=$('form input[name=name]')[0].value;
json.email=$('form input[name=email]')[0].value;
json.password=$('form input[name=password]')[0].value;
json.gender=$('form input[name=gender]:checked')[0].value;
json.city=$('form select[name=city]')[0].value;
 
json=JSON.stringify(json,null,' ');