Скачать или смотреть How to Fix the TypeError: browser.newpage is not a function in Node.js with Puppeteer

Learn how to resolve the `TypeError: browser.newpage is not a function` error while using Puppeteer in Node.js. This guide will provide step-by-step instructions and code corrections.
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Resolving the TypeError: browser.newpage is not a function in Node.js with Puppeteer

If you're working on a Node.js project using Puppeteer and you are encountering the error:

[[See Video to Reveal this Text or Code Snippet]]

you're not alone. This is a common issue that often arises due to a minor typo in the method name. In this guide, we'll explore the details of this error and how to fix it effectively.

Understanding the Problem

The error message indicates that the function newpage is being called on the browser object, which is incorrect. Puppeteer uses a specific method to open a new page in the browser, and it's sensitive to case sensitivity.

The Solution: Correcting the Typo

Step 1: Locate the Error in Your Code

In your script, you have the following line:

[[See Video to Reveal this Text or Code Snippet]]

This is where the issue lies. The correct method name is newPage, with a capital "P".

Step 2: Change newpage to newPage

To resolve the error, modify the line as follows:

[[See Video to Reveal this Text or Code Snippet]]

Final Script Correction

With the correction made, here’s the updated script:

[[See Video to Reveal this Text or Code Snippet]]

Additional Fixes

Make sure to replace the misspelled waitfor with the correct waitFor. This correction needs to be done multiple times where it is used in the calls.

Ensure that the selector string is correctly formatted, especially ensuring closing brackets are properly placed.

Conclusion

In summary, the TypeError: browser.newpage is not a function error in Puppeteer is easily fixed by correcting the method name from newpage to newPage. Always remember to check for case sensitivity in JavaScript code! With these changes, your browser automation should work smoothly.

Remember, debugging is a part of the development process. If you encounter similar issues in the future, take a close look at your method names and their specifications in the Puppeteer documentation.