问题描述
将控制台输出存储为变量时遇到问题。我已经创建了一个不到20行的简短演示代码,当执行时将向我的节点控制台输出"hello how are you",我想将此文本存储为变量。谢谢您
const puppeteer = require('puppeteer');
(async function main() {
const browser = await puppeteer.launch({
headless: false,
defaultViewport: null
});
const Page = await browser.newPage();
await Page.goto('https://www.google.com/');
await Page.on('console', code => console.log(code.text()));
await Page.evaluate(_ => {
var b = "123"
console.log(b);
});
})();
推荐答案
您可以使用承诺,该承诺将在事件中解析,然后等待。
const browser = await puppeteer.launch({
headless: false,
defaultViewport: null
});
let resolve;
var consoleLogPromise = new Promise(x => resolve = x);
const Page = await browser.newPage();
await Page.goto('https://www.google.com/');
await Page.on('console', code => resolve(code.text()));
await Page.evaluate(test);
var output = await consoleLogPromise;
console.log(output);