问题描述
我的代码与 headless false 配合得很好，但是当我将其更改为 true 时，我收到此错误：
(node:92024) UnhandledPromiseRejectionWarning: Error: Evaluation Failed: TypeError: Cannot read property 'querySelectorAll' of null
at __puppeteer_evaluation_script__:7:17
at ExecutionContext._evaluateInternal (C:\wamp64\www\scrappingWithNodejs\testdiscordBot\node_modules\puppeteer\lib\cjs\puppeteer\common\ExecutionContext.js:221:19)
at processticksAndRejections (internal/process/task_queues.js:95:5)
at async ExecutionContext.evaluate (C:\wamp64\www\scrappingWithNodejs\testdiscordBot\node_modules\puppeteer\lib\cjs\puppeteer\common\ExecutionContext.js:110:16)
at async getAllInfos (C:\wamp64\www\scrappingWithNodejs\testdiscordBot\index.js:28:12)
(Use `node --trace-warnings ...` to show where the warning was created)
(node:92024) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block,or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection,use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:92024) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future,promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
我的代码：
async function getAllInfos() {
const browser = await puppeteer.launch({ headless: true });
const page = await browser.newPage();
page.setDefaultNavigationTimeout(0);
await page.goto(`https://www.japanread.cc/`,{
waitUntil: ["load","domcontentloaded","networkidle0","networkidle2"],}); //se rendre sur une page
let trs = [];
trs = tbody.querySelectorAll("tr");//the error is here
我试着放了showMo，在"waitUntil"里放了几样东西，但是我什么也没得到，我真的不明白。 你知道问题出在哪里吗？
解决方法
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