Inherited Puppeteer code now fails with ‘page.$x is not a function’ after adjusting XPath selectors for a redesigned layout. Revised snippet:
const puppeteerLib = require('puppeteer');
async function runTest() {
const browserInstance = await puppeteerLib.launch({ headless: true });
const tabInstance = await browserInstance.newPage();
tabInstance.setExtraHTTPHeaders({ 'Accept-Language': 'en-US' });
try {
const xPathSelector = `//*[contains(@class, "updated-class")]/span`;
const elementList = await tabInstance.$$x(xPathSelector);
console.info('Found elements:', elementList);
} catch (err) {
console.error('Error in retrieving XPath elements:', err);
}
await browserInstance.close();
}
runTest();
hey, it seems you mix up $$x and $x - try using page.$x. might be a verison thing, so check if your puppeteer version supports it. sometimes updates couse these issues.
In my experience, this error typically indicates that the page instance might not be correctly set up or that there is a version mismatch. I encountered a similar issue when I updated my dependency and ended up confusing the methods between different contexts. It helped to verify that the instance returned by newPage was indeed the one you expected. I also found that checking the Puppeteer documentation for any recent changes to the API after layout modifications provided useful insights leading to an effective resolution.
While I haven’t run into exactly the same error initially, I did face a comparable issue where Puppeteer’s methods weren’t behaving as expected due to subtle initialization problems with the page instance. My solution was to ensure I waited for the page to fully load before running any XPath queries. Sometimes adding a short delay after navigation or using a more direct wait for a specific element helped mitigate these inconsistencies. It might be worthwhile to verify that the environment fully supports all Puppeteer methods and to check if any asynchronous loading might be interfering with method availability.