如何在 Puppeteer 中等待页面加载？

      const puppeteer = require('puppeteer');

async function waitForPageLoad() {
    const browser = await puppeteer.launch({ headless: true });
    const page = await browser.newPage();

    // Navigate to the Bright Data homepage
    await page.goto("https://brightdata.com");

    // Wait for the main content section to appear
    await page.waitForSelector('main', { timeout: 5000 });

    // Perform actions on the fully loaded page
    console.log("Page loaded successfully");
    
    await browser.close();
}

waitForPageLoad();