CODEWITHSUNDEEP
javascriptnode.jsbotspuppeteer
Umbra
Umbra

Reputation: 23

Puppeteer not allowing me to run multiple functions in different blocks of code

I'm in the process of making an Autocheckout bot, I'm attempting to make the section that checks if the item is in stock and I want to make it all different functions in different code blocks. The problem is I cant get it to run. When I wrap the function in () only the first function runs while the second one does nothing.

Here is the code without the () around the functions, anyone know what I'm doing wrong?

const puppeteer = require ('puppeteer');
const puppeteerExtra = require('puppeteer-extra');
const pluginStealth = require('puppeteer-extra-plugin-stealth');
const rand_url = "https://www.walmart.com/ip/Cyberpunk-2077-Warner-Bros-PlayStation-4/786104378";

async function initBrowser(){ 

    const browser = await puppeteer.launch({args: ["--incognito"],headless:false}); //Launches browser in incognito
    const context = await browser.createIncognitoBrowserContext();
    const page = await context.newPage(); //Ensures the new page is also incognito
    await page.evaluateOnNewDocument(() => {delete navigator.__proto__.webdriver;});
    await page.goto(rand_url); //goes to given link
    return page;
   
};

    async function checkstock(page){
    await page.reload();
    let content = await page.evaluate(() => document.body.innerHTML)
    $("link[itemprop ='availability']", content).each(function(){
       let out_of_stock = $(this).attr('href').toLowerCase().includes("outofstock");
       if(out_of_stock){
           console.log("Out of Stock");
           
       } else{
           await browser.close();
           console.log("In Stock")
            //await page.waitForSelector("button[class='button spin-button prod-ProductCTA--primary button--primary']", {visible: true,}); //Waits for Add to Cart Button
            //await page.$eval("button[class='button spin-button prod-ProductCTA--primary button--primary']", elem => elem.click()); //Clicks Add to cart button
       }
    });
};

Upvotes: 1

Views: 956

Answers (2)

ManuelMB
ManuelMB

Reputation: 1377

To execute the code do it as follow, but you will get ReferenceError: $ is not defined.

const puppeteer = require ('puppeteer');
const puppeteerExtra = require('puppeteer-extra');
const pluginStealth = require('puppeteer-extra-plugin-stealth');
const rand_url = "https://www.walmart.com/ip/Cyberpunk-2077-Warner-Bros-PlayStation-4/786104378";

async function initBrowser(){ 

    const browser = await puppeteer.launch({args: ["--incognito"],headless:false}); //Launches browser in incognito
    const context = await browser.createIncognitoBrowserContext();
    const page = await context.newPage(); //Ensures the new page is also incognito
    await page.evaluateOnNewDocument(() => {delete navigator.__proto__.webdriver;});
    await page.goto(rand_url); //goes to given link
    return page;
};
 

async function checkstock(page){
    await page.reload();
    let content = await page.evaluate(() => document.body.innerHTML)
    console.error(content);
    $("link[itemprop ='availability']", content).each(async function(){ 
 
       let out_of_stock = $(this).attr('href').toLowerCase().includes("outofstock");
       if(out_of_stock){
           console.log("Out of Stock");
           
       } else{

        await browser.close();
       }
    });
};

(async () => {
    const page = await initBrowser()
    await checkstock(page)
})()

Upvotes: 2

ManuelMB
ManuelMB

Reputation: 1377

I debugged your code, and after add to launch.json:

"outputCapture": "std"

I noticed that there is an error in the following line:

await browser.close(); ^^^^^

SyntaxError: await is only valid in async function

You need to add async

$("link[itemprop ='availability']", content).each(async function(){

Upvotes: 0

Related Questions