create post using Ajax

I want to create post using Ajax .

I had followed the process from Insert Post using Ajax But i couldn't make it work. please help me out .

Here is the things i did , Please see what I did wrong as i am just a learner .

In WordPress page Template

$j=jQuery.noConflict(); 
    $j(document).ready(function(){                                              
        $j("#enqform").validate({               
            submitHandler: function () {                 
                dataString = $j("#enqform").serialize();                                
                $.ajax({
                    type: "POST",
    url: "http://localhost/wso/wp-admin/admin-ajax.php",
                   data :  {action: "admin_ajax_enqform" }

                });                             
            }                   
        })
    }); 
</script>                    

<form action="<?php the_permalink(); ?>" class="contact-box" id="enqform" method="post">
    <label for="firstname">First Name<span class="req">*</span></label>                      
    <input type="text" id="firstname" name="firstname" value="<?php if(isset($_POST['firstname'])) echo $_POST['firstname'];?>" class="required" /> 

    <input type="hidden" name="submitted" id="submitted" value="true" /> 

    <input type="hidden" name="action" value="admin_ajax_enqform" />  
    <input type="hidden" name="nonce" value="<?php echo wp_create_nonce( 'form-nonce' );?>" />                      

        <input type="submit" id="submit-btn" value="Submit" />             
</form> 

In WordPress Function.php

add_action( 'admin_ajax_enqform', 'wpse_126886_ajax_handler' );

    function wpse_126886_ajax_handler() {

    if(isset($_POST['submitted'])) {    //validations 

        if(trim($_POST['firstname']) === '') {
            $hasError = true;
        } else {
            $firstname = trim($_POST['firstname']);
        }   


        // maybe check some permissions here, depending on your app

     global $wpdb;
        $nonce = $_POST['nonce'];
        if ( ! wp_verify_nonce( $nonce, 'form-nonce' ) ) {
            die( 'Security check' ); 
        } else {            
            $new_post = array(
                'post_title'    => $firstname,
                'post_status'   => 'publish',
                'post_type' => 'post'
            );
            $pid = wp_insert_post($new_post);                           
            if( $pid ) { 
                add_post_meta( $pid, 'cpt_firstname', $firstname, true );                                       
            }


        // send some information back to the javascipt handler
        $response = array(
            'status' => '200',
            'message' => 'OK',
            'new_post_ID' => $pid
        );


        }




        // normally, the script expects a json respone
        header( 'Content-Type: application/json; charset=utf-8' );
        echo json_encode( $response );

        exit; // important
    }
    }

thanks in advance .