All files 11.AJAX.js

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  // get
export function ajaxGet(url, callback) {
  const xhr = new XMLHttpRequest();
  xhr.open('GET', url, true);
  xhr.onreadystatechange = function () {
    if (xhr.readyState === 4 && xhr.status === 200) {
      callback(xhr.responseText);
    }
  };
  xhr.send();
}
 
// post
export function ajaxPost(url, data, callback) {
  const xhr = new XMLHttpRequest();
  xhr.open('POST', url, true);
  xhr.setRequestHeader('Content-Type', 'application/json');
  xhr.onreadystatechange = function () {
    if (xhr.readyState === 4) {
      if (xhr.status === 200 || xhr.status === 201) {
        callback(xhr.responseText);
      } else {
        console.error('Error in POST request:', xhr.statusText);
      }
    }
  };
  xhr.send(JSON.stringify(data));
}