javascript - 异步 puppeteer 浏览器在几次迭代后断开连接

Question

我在一个小案例中使用 puppeteer 测试了迭代。我已经读过 puppeteer 断开连接的常见原因是 Node script doesnt wait for the puppeteer actions to be ended 。因此，我将代码片段中的所有函数转换为异步函数，但没有帮助。

如果六次迭代的小案例可行，我将在当前项目中实现大约 50 次迭代。

'use strict';

const puppeteer = require('puppeteer');

const arrIDs = [8322072, 1016816, 9312604, 1727088, 9312599, 8477729];

const call = async () => {
    await puppeteer.launch().then(async (browser) => {
        arrIDs.forEach(async (id, index, arr) => {
            await browser.newPage().then(async (page) => {
                await page.goto(`http://somelink.com/${id}`).then(async () => {
                    await page.$eval('div.info > table > tbody', async (heading) => {
                        return heading.innerText;
                    }).then(async (result) => {
                        await browser.close();
                        console.log(result);
                    });
                });
            });
        });
    });
};

call();

Answer 1

forEach 同步执行。将 forEach 替换为简单的 for 循环。

const arrIDs = [8322072, 1016816, 9312604, 1727088, 9312599, 8477729];
const page = await browser.newPage();

for (let id of arrIDs){
    await page.goto(`http://somelink.com/${id}`);
    let result = await page.$eval('div.info > table > tbody', heading => heading.innerText).catch(e => void e);
    console.log(result);
}

await browser.close()