如何将uri响应传递给另一个函数并获取长度？

function getResponseLength(url, callback) {
  var xhr = new XMLHttpRequest();
  xhr.open('GET', url, true);
  xhr.onreadystatechange = function() {
    if (xhr.readyState === 4 && xhr.status === 200) {
      var responseLength = xhr.responseText.length;
      callback(responseLength);
    }
  };
  xhr.send();
}

function processResponseLength(length) {
  console.log('Response length:', length);
  // 在这里可以继续处理URI响应的长度
}

var uri = 'https://example.com'; // 替换为你要请求的URI
getResponseLength(uri, processResponseLength);

const http = require('http');

function getResponseLength(url, callback) {
  http.get(url, (res) => {
    let responseLength = 0;
    res.on('data', (chunk) => {
      responseLength += chunk.length;
    });
    res.on('end', () => {
      callback(responseLength);
    });
  });
}

function processResponseLength(length) {
  console.log('Response length:', length);
  // 在这里可以继续处理URI响应的长度
}

var uri = 'https://example.com'; // 替换为你要请求的URI
getResponseLength(uri, processResponseLength);