up：等待一个元素可见？

我认为您可以

page.waitForSelector(selector[, options])

const puppeteer = require('puppeteer');puppeteer.launch().then(async browser => {  const page = await browser.newPage();  page    .waitForSelector('#myId')    .then(() => console.log('got it');    browser.close();});

要检查可用选项，请参阅github链接。