The script is not functioning properly due to an error stating "(Uncaught ReferenceError: $ajaxUtils is not defined)"

I'm having trouble figuring out what the issue is
(Uncaught ReferenceError: $ajaxUtils is not defined)

document.addEventListener("DOMContentLoaded", function (event) {
    showLoading("#main-content");
    $ajaxUtils.sendGetRequest(
        homeHtml,
        function (responseText) {
            document.querySelector("#main-content").innerHTML = responseText;
        },
    false);
});

Answer №1

$ajaxUtils is not included in jQuery.js

To resolve this, create a new file named ajax-utils.js and include the following code:

(function(global) {
// Create namespace for utility
var ajaxUtils = {};


// Function to return an HTTP request object
function getRequestObject() {
  if (window.XMLHttpRequest) {
    return (new XMLHttpRequest());
  } 
  else if (window.ActiveXObject) {
    // For old IE browsers
    return (new ActiveXObject("Microsoft.XMLHTTP"));
  } 
  else {
    global.alert("Ajax is not supported!");
    return(null); 
  }
}


// Sends an Ajax GET request to 'requestUrl'
ajaxUtils.sendGetRequest = 
  function(requestUrl, responseHandler, isJsonResponse) {
    var request = getRequestObject();
    request.onreadystatechange = 
      function() { 
        handleResponse(request, 
                       responseHandler,
                       isJsonResponse); 
      };
    request.open("GET", requestUrl, true);
    request.send(null); // for POST only
  };


// Calls user provided 'responseHandler' only if response is ready and not an error
function handleResponse(request,
                        responseHandler,
                        isJsonResponse) {
  if ((request.readyState == 4) &&
     (request.status == 200)) {

    // Default to isJsonResponse = true
    if (isJsonResponse == undefined) {
      isJsonResponse = true;
    }

    if (isJsonResponse) {
      responseHandler(JSON.parse(request.responseText));
    }
    else {
      responseHandler(request.responseText);
    }
  }
}


// Expose utility globally
global.$ajaxUtils = ajaxUtils;


})(window);

Remember to link ajax-query.js to your index.html page :)

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