別のAJAXリクエストが終了した後に1つのAJAXリクエストを実行します

1つのJSファイルがajax呼び出しを行っています.このajax呼び出しが成功すると、別のAJAX呼び出しが行われます. 2回目の呼び出しでは、電子メールがすでに登録されているかどうかを確認します.その場合、2回目のAJAX呼び出しは、firebugとChromeコンソールに示されているように、返されたデータを受け取りません.ただし、同じコードはローカルホストでも問題なく機能しますが、前述の問題はオンラインサーバーでのみ発生します.

ホストされているページはhttp://twmobilefitness.com/signup/にあります.この問題は、最後にある [今すぐ登録] リンクをクリックすると発生します.問題を発生させたい場合は、同じメールアドレスで2回登録する必要があります.

JS:

 $.ajax( {
    url : base_url+"/wp-admin/admin-ajax.php",
    type : 'GET',
    cache : false,
    data : 'action=check_user_name&'
           + Math.floor( ( Math.random() * 100 ) +1 )
           + '&user_name='+user_name,
    success : function( result ) {
        if ( parseInt( result ) == 0 ) {
            $( ".result" ).html( '<span class="error">User name not available </span>' );
        } else if ( parseInt( result ) == 1 ) {
            $.ajax( {
                url : base_url 
                    + "/wp-admin/admin-ajax.php",
                type : 'GET',
                cache : false,
                data : 'action=check_email_used&'
                    + Math.floor( ( Math.random() *100 ) +1 )
                    + '&email=' + email,
                success : function( result_email ) {
                    if ( parseInt( result_email ) == 0 ) {
                        $( ".result" ).html( '<span class="error">Email already used </span>' );
                    } else if ( parseInt( result_email ) == 1 ) {
                        $( ".result" ).html( '' );      
                        $( ".signup_div" ).hide();
                        $( ".signup_emergency_contact" ).show();
                    }
                }
            } );
        }
    }   
} );    
 

functions.phpには

 add_action('wp_ajax_check_user_name','check_user_name');
add_action('wp_ajax_nopriv_check_user_name','check_user_name');

add_action( 'wp_ajax_check_email_used','check_email_used' );
add_action( 'wp_ajax_nopriv_check_email_used','check_email_used' );
function check_user_name() {
    global $wpdb;

    $user_name = trim( $_GET['user_name'] );
    $MobTraining = new MobTraining();
    $table =trim( "{$wpdb->prefix}users" );
    $array_where['user_login'] = $user_name;
    $sql_fetch = $MobTraining->fetch( $table, $array_where );
    $row = $wpdb->get_results( $sql_fetch, ARRAY_A );
    if ( sizeof( $row ) != 0 ) {
        echo '0';
    } else {
        echo '1';
    }
    die();
}

function check_email_used() {
    global $wpdb;

    $email = trim( $_GET['email'] );
    $MobTraining = new MobTraining();
    $table = trim( "{$wpdb->prefix}users" );
    $array_where['user_email'] = $email;
    $sql_fetch = "SELECT * FROM $table WHERE `user_email`='$email'";
    $row = $wpdb->get_results( $sql_fetch, ARRAY_A );
    if ( sizeof( $row ) != 0 ) {
        echo '0';
    } else {
        echo '1';
    }
    die();
}
 

オンラインサーバーでコードを機能させる方法は?

One JS file is making an ajax call. Within the success of this ajax call another AJAX call is made. The second call checks whether the email has already been registered. If it has been then the second AJAX call recieves no returned data as shown in firebug and Chrome console in the case. But the same code works just fine in localhost while the mentioned problem takes place ONLY in online server.

The hosted page is at http://twmobilefitness.com/signup/. The problem takes place when you click on the 'Register Now' link at the end. You have to register twice with the same email address if you want to get the problem happen.

JS:

$.ajax( {
    url : base_url+"/wp-admin/admin-ajax.php",
    type : 'GET',
    cache : false,
    data : 'action=check_user_name&'
           + Math.floor( ( Math.random() * 100 ) +1 )
           + '&user_name='+user_name,
    success : function( result ) {
        if ( parseInt( result ) == 0 ) {
            $( ".result" ).html( '<span class="error">User name not available </span>' );
        } else if ( parseInt( result ) == 1 ) {
            $.ajax( {
                url : base_url 
                    + "/wp-admin/admin-ajax.php",
                type : 'GET',
                cache : false,
                data : 'action=check_email_used&'
                    + Math.floor( ( Math.random() *100 ) +1 )
                    + '&email=' + email,
                success : function( result_email ) {
                    if ( parseInt( result_email ) == 0 ) {
                        $( ".result" ).html( '<span class="error">Email already used </span>' );
                    } else if ( parseInt( result_email ) == 1 ) {
                        $( ".result" ).html( '' );      
                        $( ".signup_div" ).hide();
                        $( ".signup_emergency_contact" ).show();
                    }
                }
            } );
        }
    }   
} );    

functions.php has

add_action('wp_ajax_check_user_name','check_user_name');
add_action('wp_ajax_nopriv_check_user_name','check_user_name');

add_action( 'wp_ajax_check_email_used','check_email_used' );
add_action( 'wp_ajax_nopriv_check_email_used','check_email_used' );
function check_user_name() {
    global $wpdb;

    $user_name = trim( $_GET['user_name'] );
    $MobTraining = new MobTraining();
    $table =trim( "{$wpdb->prefix}users" );
    $array_where['user_login'] = $user_name;
    $sql_fetch = $MobTraining->fetch( $table, $array_where );
    $row = $wpdb->get_results( $sql_fetch, ARRAY_A );
    if ( sizeof( $row ) != 0 ) {
        echo '0';
    } else {
        echo '1';
    }
    die();
}

function check_email_used() {
    global $wpdb;

    $email = trim( $_GET['email'] );
    $MobTraining = new MobTraining();
    $table = trim( "{$wpdb->prefix}users" );
    $array_where['user_email'] = $email;
    $sql_fetch = "SELECT * FROM $table WHERE `user_email`='$email'";
    $row = $wpdb->get_results( $sql_fetch, ARRAY_A );
    if ( sizeof( $row ) != 0 ) {
        echo '0';
    } else {
        echo '1';
    }
    die();
}

How to make the code work in online server ?