ajax que es

What is Ajax?

Ajax stands for Asynchronous JavaScript and XML. It is a technique used in web development to allow for asynchronous data exchange between the client and the server without requiring a page refresh. This means that data can be updated in real-time without disrupting the user's experience.

How does Ajax work?

Ajax works by using JavaScript to send an HTTP request to the server in the background, without reloading the entire page. The server can then process the request and send a response back to the client in a format such as XML or JSON. The JavaScript on the client-side can then parse the response and update the page accordingly.

function getData() {
  // create XMLHttpRequest object
  var xhr = new XMLHttpRequest();
  // open connection to server
  xhr.open('GET', 'data.json', true);
  // send request to server
  // handle response from server
  xhr.onreadystatechange = function() {
    if (xhr.readyState === 4 && xhr.status === 200) {
      // parse JSON data
      var data = JSON.parse(xhr.responseText);
      // update HTML on page
      document.getElementById('results').innerHTML = data.message;
  • Ajax can be used for various purposes such as form validation, real-time chat, and dynamic content loading.
  • There are also libraries and frameworks available such as jQuery and React that make it easier to implement Ajax in your projects.

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