Retrieve the external ajax parameter

Question

Retrieve the external ajax parameter

I am working on a function that requires 4 parameters

function retrieveToken(uName, pass, link, userRole) {
var self = this;
currentLink = link;

$.ajax({
    type: 'GET',
    url: "/Base/getConfigUrl",
    success: function (data) {
        $.ajax({
            type: 'GET',
            async: false,
            url: link + '?username=' + uName + '&password=' + pass,
            success: 'handleSuccess',
            error : 'handleError',
            contentType: "application/json",
            dataType: 'jsonp'
        });
    }

});

Here is the callback function for this operation:

function handleSuccess(responseData) {
// Need to access the outer parameter here
}

While inside the callback function, I need access to the role parameter. After logging the this variable, I was unable to find any relevant information.

javascript ajax closures

Answer 1

Answer №1

Unfortunately, it's not possible as the role variable is out of scope.

To resolve this issue, you'll need to adjust your code in a way that allows you to pass the variable from where it is accessible to the callbackFunc function.

Refer to the code comments for a detailed explanation of the modifications.

function callbackFunc(resultData, role) {
  // Update the argument list above to include the role as an additional parameter
}

function getToken(u, p, url, role) {
  var that = this;
  var oururl = url; // It's recommended to make this a local variable rather than a global one
  $.ajax({
    type: 'GET',
    url: "/Base/getConfigUrl",
    success: function(data) {
      $.ajax({
        type: 'GET',
        url: url,
        data: { 
          username: u,
          password: p
        },
        success: function(data) {
          callbackFunc(data, role); 
        },
        error: function() {}, 
        dataType: 'jsonp'
      });
    }
  });

Answer 2

Unfortunately, it's not possible as the role variable is out of scope.

To resolve this issue, you'll need to adjust your code in a way that allows you to pass the variable from where it is accessible to the callbackFunc function.

Refer to the code comments for a detailed explanation of the modifications.

function callbackFunc(resultData, role) {
  // Update the argument list above to include the role as an additional parameter
}

function getToken(u, p, url, role) {
  var that = this;
  var oururl = url; // It's recommended to make this a local variable rather than a global one
  $.ajax({
    type: 'GET',
    url: "/Base/getConfigUrl",
    success: function(data) {
      $.ajax({
        type: 'GET',
        url: url,
        data: { 
          username: u,
          password: p
        },
        success: function(data) {
          callbackFunc(data, role); 
        },
        error: function() {}, 
        dataType: 'jsonp'
      });
    }
  });

Retrieve the external ajax parameter

Answer №1

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