jQuery Ajax问题

我正在使用jQuery验证我的注册表单上的所有字段。不幸的是,最后的AJAX脚本没有像我预期的那样发布到PHP文件中,也没有按照规定对文档进行必要的更改。当我点击提交时,它会像应该的那样清除错误标签,但似乎什么也没做。

  $(".button").click(function() {
        // validate and process form
        // first hide any error messages
    $('.error').hide();



// Check if First Name is Blank 
    var firstname = $("input#firstname").val();

    if (firstname == "") {
      $("label#firstname_error").show();
      $("input#firstname").focus();
      return false;
    }

// Check if Last Name is Blank
    var lastname = $("input#lastname").val();

        if (lastname == "") {
      $("label#lastname_error").show();
      $("input#lastname").focus();
      return false;
    }

// Check if Address is Blank    
    var address = $("input#address").val();

    if (address == "") {
      $("label#address_error").show();
      $("input#address").focus();
      return false;
    }

// Check if City is Blank   
    var city = $("input#city").val();

    if (city == "") {
      $("label#city_error").show();
      $("input#city").focus();
      return false;
    }

// Check if State is Blank  
    var state = $("select#state").val();

    if (state == "") {
      $("label#state_error").show();
      $("select#state").focus();
      return false;
    }

// Check if ZIP Code is Blank   
    var zipcode = $("input#zipcode").val();

    if (zipcode == "") {
      $("label#zipcode_error").show();
      $("input#zipcode").focus();
      return false;
    }

// Check if Phone Number is Blank   
    var phonenumber = $("input#phonenumber").val();

    if (phonenumber == "") {
      $("label#phonenumber_error").show();
      $("input#phonenumber").focus();
      return false;
    }

// Check if Username is Blank   
    var username = $("input#username").val();

    if (username == "") {
      $("label#username_error").show();
      $("input#username").focus();
      return false;
    }

// Check if Password is Blank   
    var password = $("input#password").val();

    if (password == "") {
      $("label#password_error").show();
      $("input#password").focus();
      return false;
    }

// Check if Confirm Password is Blank   
    var confirmpassword = $("input#confirmpassword").val();

    if (confirmpassword == "") {
      $("label#confirmpassword_error").show();
      $("input#confirmpasword").focus();
      return false;
    }

    // Check if Passwords Match

    if (password != confirmpassword) {
      $("label#notmatching_error").show();
      $("input#password").focus();
      return false;
    }

// Check if user picked valid username 
    var restrict = $("input#restrict").val();

    if (restrict == "true") {
      $("label#validuser_error").show();
      $("input#username").focus();
      return false;
    }


    var plan = $("select#plan").val();

        var dataString = 'firstname='+ firstname + 
                         '&lastname=' + lastname +
                         '&address=' + address + 
                         '&city=' + city +
                         '&state=' + state +
                         '&zipcode=' + zipcode +
                         '&phonenumber=' + phonenumber +
                         '&username=' + username +
                         '&password=' + password +
                         '&plan=' + plan;



        //alert(dataString); return false;



$.ajax({

      type: "POST",

      url: "../register_user.php",

      data: dataString,

     success: function() {

        $('#buy_form').html("<div id='message'></div>");

        $('#message').html("<b>Customer Information Logged</b>")

        .append("Hello!")

        .hide()

        .fadeIn(1500, function() {

          $('#message');

        });

      }

     });

    return false;

    });

});

我完全修改了代码来分解它,现在它正在运行PHP脚本,但即使手动输入,变量也不会被发布。

var dataString = 'firstname='+ firstname + 
                         '&lastname=' + lastname +
                         '&address=' + address + 
                         '&city=' + city +
                         '&state=' + state +
                         '&zipcode=' + zipcode +
                         '&phonenumber=' + phonenumber +
                         '&username=' + username +
                         '&password=' + password +
                         '&plan=' + plan; 


$.ajax({
   type: "POST",
   url: "register_user.php",
   data: dataString,
   success: function(){
     alert( "Hello " );
   }

 });

谢谢你一直以来的帮助,几乎到了。