init

index.js

+const express = require('express')
+const start_grab = require('./lottery')
+
+const app = express()
+
+start_grab()
+app.get('/',async function(req,res){
+    await start_grab()
+    res.send('Hello World')
+})
+app.listen(5001,()=>{
+    process.title='stock scan server';
+    console.log('id:',process.pid)
+})
\ No newline at end of file

lottery.js

+const puppeteer = require('puppeteer');
+
+async function start_grab(){
+    const browser = await puppeteer.launch({headless: true});
+    const page = await browser.newPage()
+    //page.goto('http://www.baidu.com/s?wd=彩票')
+    await page.goto("http://kaijiang.500.com/?0_ala_baidu")
+    const element = await page.waitForSelector('.kj_tablelist01')
+    const titles = await element.$$eval('.td_title02',o=>o.map(t=>t.innerText))
+    const stages = await element.$$eval('.td_title02',o=>o.map(t=>t.nextElementSibling.innerText))
+    const dates = await element.$$eval('.td_title02',o=>o.map(t=>t.nextElementSibling.nextElementSibling.innerText))
+    const nums = await element.$$eval('.td_kjhm01 > .ball_box01', o=>o.map(t=>{
+        return Array.prototype.map.call(t.children[0].children,x=>x.innerText)
+    }))
+    let stocks = []
+    stocks.push()
+
+    await element.dispose();
+    await browser.close()
+    return element
+}
+
+module.exports = start_grab
\ No newline at end of file

package.json

+{
+  "name": "stock_scan",
+  "version": "1.0.0",
+  "description": "check rest api for custom webservice for every stock in shanghai.get the newest price and information.",
+  "main": "index.js",
+  "scripts": {
+    "start": "node index.js",
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://gitee.com/sofu456/stock_scan.git"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "express": "^4.18.2",
+    "puppeteer": "^19.6.2"
+  }
+}