Warning: Using synchronous XMLHttpRequest on the main thread is no longer recommended as it can negatively impact the user's experience

I encountered an issue with my project while attempting an Ajax request

[Warning] Using synchronous XMLHttpRequest on the main thread is now considered deprecated due to its negative impact on user experience.

function retrieveReviews() {
var reviewsData = $.ajax({
    url: 'API/reviews.json',
    async: false
}).responseJSON;
return reviewsData;
}

I am seeking alternative methods to prevent this error from occurring

Answer №1

Using Synchronous XMLHttpRequest can be detrimental as it blocks the entire application while waiting for a server response. It is best to avoid using this method.

To ensure your requests are asynchronous, simply remove the async option and instead specify a callback function:

function fetchReviews(callback) {
  $.ajax({
      url: 'API/reviews.json'
  }).done(callback);
}

fetchReviews(function(data) {
  // Process and access data here
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

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