Integrating Node.js Puppeteer with Angular Events

Other Questions Puppeteer
1

Invoke Puppeteer’s PDF task via an Angular click and Node endpoint. See concise Angular and Node.js snippets below:

$scope.generateFile = () => {
  $http.get('/generate-file').then(resp => console.log(resp));
};

router.get('/generate-file', async (req, res) => {
  const puppeteerHandler = require('puppeteer');
  const browserInst = await puppeteerHandler.launch();
  const newPage = await browserInst.newPage();
  await newPage.goto('/targetPage', { waitUntil: 'networkidle0' });
  await newPage.pdf({ path: 'pdfDocs/output.pdf', format: 'A4' });
  await browserInst.close();
});
2

I have worked on a similar integration and faced a few challenges that might be useful to consider. In my experience, ensuring that the Puppeteer page is fully loaded before performing any operations proved to be crucial. I encountered issues with using relative URLs in the newPage.goto call and found that specifying the full URL addressed this problem. Error handling became vital once I improved overall stability; wrapping asynchronous operations in try-catch blocks helped to reveal timing-related glitches. It is also beneficial to verify that Angular’s $http call handles responses and errors gracefully to prevent unnecessary timeouts or crashes.

3

i had a similar experiance. using full urls and waiting for key selectors fixed many issues. a small delay in async operations can help, too. dont skipp error handling!

4

The integration between Angular and Puppeteer through Node can be further improved by careful management of asynchronous operations. I found that enhancing error tracking with explicit logging improved overall stability. Besides using fully qualified URLs, it is effective to use proper timeouts and retries when navigating to the target page. Consider also managing memory by reusing the browser instance if you need to perform multiple tasks, rather than launching a new browser each time. These modifications have helped in reducing delays and preventing unexpected terminations.