在承诺数组中的get请求之间添加超时

function sendGetRequestWithTimeout(url, timeout) {
  return new Promise((resolve, reject) => {
    const xhr = new XMLHttpRequest();
    xhr.open('GET', url, true);
    
    xhr.onload = function() {
      if (xhr.status === 200) {
        resolve(xhr.responseText);
      } else {
        reject(new Error(`Request failed with status ${xhr.status}`));
      }
    };
    
    xhr.onerror = function() {
      reject(new Error('Request failed'));
    };
    
    xhr.send();
    
    setTimeout(() => {
      if (xhr.readyState !== 4) {
        xhr.abort();
        reject(new Error('Request timed out'));
      }
    }, timeout);
  });
}

const promiseArray = [];

promiseArray.push(sendGetRequestWithTimeout('https://example.com/api/endpoint1', 5000));
promiseArray.push(sendGetRequestWithTimeout('https://example.com/api/endpoint2', 5000));
promiseArray.push(sendGetRequestWithTimeout('https://example.com/api/endpoint3', 5000));

Promise.all(promiseArray)
  .then((results) => {
    // 处理所有请求的响应结果
    console.log(results);
  })
  .catch((error) => {
    // 处理超时或请求失败的情况
    console.error(error);
  });