要准备下载的图片：

代码：

const http = require('http')
const cheerio = require('cheerio')
const download = require('download')

const HOST = 'http://www.18183.com/yxzjol/?soucre=bdald'
let req = http.request(HOST, res => {
    //异步的响应
   // console.log(res)
    //监听data事件，并获取传递过来的数据片段
    //拼接数据片段
    let chunks=[]
    res.on('data', chuck => {
       chunks.push(chuck)
    })
    //监听end事件，获取数据完毕时触发
    res.on('end', () => {
        //拼接所有的chuck,并转化或字符串==》html字符串
        //console.log(Buffer.concat(chunks).toString('utf-8'))
        let htmlStr = Buffer.concat(chunks).toString('utf-8')
        let $ = cheerio.load(htmlStr)
         
       
        //$('.pic-menu ul li  img ').each( function (index, item) {
        //    console.log(index,item)
        //    console.log($(item).attr('src'))

        //})
        //获取图片
        let imgs = Array.prototype.map.call($('.pic-menu ul li  img '), item => $(item).attr('src'))

        //let imgs=  $('.pic-menu ul li  img ').map((index,item) => $(item).attr('src'))
        // console.log(imgs[0])
        console.log(imgs)
        //下载图片
        Promise.all(imgs.map(x => download(x, 'dist'))).then(() => {

            console.log('Download complete');
        })
    })
})
//将请求发出
req.end()

注意：引入cheerio，download包

完成效果：