Clash Royale CLAN TAG#URR8PPP

Looping async functions in nodejs

so here's my problem. In the following function I want to get some data from a website using puppeteerjs. The function searches for a product on the website with the names its getting from a mongodb database. So here is my question. I want to loop the function through an array of names I'm getting from mongo. So if the function is completed once , it starts again with the next name in the array until there is nothing else in the array.

async function scrape()
const browser = await puppeteer.launch(
headless: false
);
const page = await browser.newPage();
await page.setUserAgent('Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36');
await page.goto(dealer);
await page.type('.Search-bar-text-input', arrayOfArticles[i]);
await page.click('.Embedded-search-button')
await page.waitFor('.BuyingOptions-total-price');

const result = await page.evaluate(() =>
let path = '.BuyingOptions-total-price';
let price = document.querySelector(path).innerText;

return price;
);




So I originally wanted to simply do that with this:

for (var i = 0, len = arrayOfArticles.length; i < len; i++){


but from what I've read that doesnt work with async functions. How would I archive the same for my function?

that doesnt work with async functions

await

scrape

(async () => for (let i = 0; i < arrayOfArticles.length; i++) await scrape(); )();

1 Answer
1

you can go with a slight modification

return page.evaluate(() =>
let path = '.BuyingOptions-total-price';
let price = document.querySelector(path).innerText;

return price;
);

//----------------

(async () =>
for (var i = 0, len = arrayOfArticles.length; i < len; i++)
const result = await scrape(arrayOfArticles[i]);

)()


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