const http = require('http')
const cheerio = require('cheerio')
const fs = require('fs'); 
const baseUrl = 'http://www.jmcbm.com/'

let req = http.request(baseUrl, res => {
  // 异步的响应
  // console.log(res)
  let chunks = []

  // 存储链接
  let links = []
  const fileNames = []
  // 监听data事件，获取传递过来的数据片段
  res.on('data', chunk => {
    chunks.push(chunk)
  })
  // 监听end事件，获取数据完毕时触发
  res.on('end', () => {
    let htmlStr = Buffer.concat(chunks).toString('utf-8')
    let $ = cheerio.load(htmlStr, {
      decodeEntities: false
    })

    $('body table tr td a').each((index, item) => {
      if ($(item).attr('href').includes('.asp')) {
        let fileName = $(item).attr('href').split('.asp')[0]
        if (!fileNames.includes(fileName)) {
          fileNames.push(fileName)
        }
        links.push($(item).attr('href'))
      }
    })
    fs.writeFileSync('1.text', fileNames.join('\n'))
  })
})

req.end()