如何使用Puppeteer抓取span文本值

const puppeteer = require('puppeteer');

async function getSpanText(url, spanSelector) {
  const browser = await puppeteer.launch();
  const page = await browser.newPage();
  await page.goto(url);
  await page.waitForSelector(spanSelector);
  const spanText = await page.evaluate((selector) => {
    const spanElement = document.querySelector(selector);
    return spanElement.innerText;
  }, spanSelector);
  await browser.close();
  return spanText;
}

const url = 'https://example.com';
const spanSelector = 'span.my-span';
getSpanText(url, spanSelector)
  .then((text) => {
    console.log('Span文本值：', text);
  })
  .catch((error) => {
    console.error('抓取失败：', error);
  });