Encountering a CSS selector issue in Puppeteer when automating Gmail email composition. For instance:
const composeBtn = await page.$('div.btn-create');
await composeBtn.click();
Why is the selector invalid?
In my case, I noticed that Gmail’s UI loads elements dynamically and often uses generated class names that change on each session. Instead of relying on a static CSS class, I opted for an Xpath or another approach like selecting directly by an attribute that is less likely to be modified. Additionally, ensuring the element is fully attached and visible by waiting for it before attempting a click has proven beneficial. Adjusting these methods allowed for a more robust and reliable interaction with the interface.