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JavaScript / jQuery Scope Issue error with nested .ajax () calls

It's hard for me to transfer a variable postData, which is a serialized jQuery array object for a nested child call .ajax(). postDatasuccessfully passed to the first call .ajax(), but when I try to use it in the second call .ajax(), it does not publish any form elements, since the variable is undefined at this level:

$(".myForm").submit(function () {
    var postData=$(this).serializeArray();
    $.ajax({
        type        : "POST",
        async       : false,
        cache       : false,
        url         : "./insertComment.php",
        data        : postData,
        success: function() {
            $.ajax({
               type         : "POST",
               async       : false,
               cache        : false,
               url          : "./getComments.php",
               data        : postData,
               success: function(comments) {
                   $(".Comments").html(comments);
               }
            });
        }
    });
    return false;
});

I tried to create a second variable _postDatatrying to perpetuate the variable on the next call .ajax(), but it was unsuccessful (also tried var _postData=$(this).parent().serializeArray();, but I still could not perpetuate this variable):

$(".myForm").submit(function () {
    var postData=$(this).serializeArray();
    $.ajax({
        type        : "POST",
        async       : false,
        cache       : false,
        url         : "./insertComment.php",
        data        : postData,
        success: function() {
            var _postData=$(this).serializeArray();
            $.ajax({
               type         : "POST",
               async       : false,
               cache        : false,
               url          : "./getComments.php",
               data        : _postData,
               success: function(comments) {
                   $(".Comments").html(comments);
               }
            });
        }
    });
    return false;
});

JavaScript (-, ), undefined :

$(".myForm").submit(function () {
    var postData = function() {
        $(this).serializeArray();
    }();
    $.ajax({
        type        : "POST",
        async       : false,
        cache       : false,
        url         : "./insertComment.php",
        data        : postData,
        success: function() {
            $.ajax({
               type         : "POST",
               async       : false,
               cache        : false,
               url          : "./getComments.php",
               data        : postData,
               success: function(comments) {
                   $(".Comments").html(comments);
               }
            });
        }
    });
    return false;
});

, jQuery (.parent(), .filter() ..), . , , , . . !

+3
2

:

$(".myForm").submit(function () 
    {
        var postData=$(this).serializeArray();
        $.ajax({ type        : "POST",
                 async       : false,
                 cache       : false,
                 url         : "./insertComment.php",
                 data        : postData,
                 success: (function(pData) 
                   {
                      // capture the posted data in a closure
                      var _postData = pData;
                      return function() 
                             {                    
                               $.ajax({ type: "POST",
                                        async: false,
                                        cache: false,
                                        url: "./getComments.php",
                                        data: _postData,
                                        success: function(comments)
                                        {
                                            $(".Comments").html(comments);
                                        }
                                    });
                            }
                   })(postData)   // execute the outer function to produce the colsure
               });
      return false;
    });
+1

:

$(".myForm").submit(function () {

    var postData = $(this).serializeArray(); // Gets all of the form elements
    var myID = $(this.ID).val(); // Takes only a single value from the form input named ID

    $.ajaxSetup({
        data        : "ID=" + myID // Sets the default data for all subsequent .ajax calls
    });

    $.ajax({
        type        : "POST",
        async       : false,
        cache       : false,
        url         : "./insertComment.php",
        data        : postData, // Overwrites the default form data for this one instance only, including all form elements
        success: function() {
            $.ajax({
               type         : "POST",
               async        : false,
               cache        : false,
               url          : "./loadComments.php", // Notice there is no data: field here as we are using the default as defined above
               success: function(comments) {
                   $(".Comments").html(comments);
               }
            });
        }
    });
    return false;
});
0

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