使用nodejs捕获html页面中的错误信息

const http = require('http');

const server = http.createServer((req, res) => {
  // 请求处理逻辑
});

const port = 3000;
server.listen(port, () => {
  console.log(`Server running at http://localhost:${port}/`);
});

const request = require('request');

const url = 'http://example.com';
request(url, (error, response, body) => {
  if (error) {
    console.error(`Error requesting ${url}: ${error}`);
  } else if (response.statusCode !== 200) {
    console.error(`Invalid response status code: ${response.statusCode}`);
  } else {
    // 页面内容处理逻辑
  }
});

const cheerio = require('cheerio');

const $ = cheerio.load(body);
const errors = [];

$('script').each((index, element) => {
  const scriptContent = $(element).html();
  if (scriptContent.includes('Error')) {
    errors.push(scriptContent);
  }
});

if (errors.length > 0) {
  console.log(`Found ${errors.length} error(s):`);
  errors.forEach((error, index) => {
    console.log(`${index + 1}. ${error}`);
  });
} else {
  console.log('No errors found in the HTML page.');
}