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                # error-handling # Error handling 如果 Puppeteer 方法無法執行一個請求,就會拋出一個錯誤。例如,[page.waitForSelector(selector\[, options\])](#?product=Puppeteer&version=v1.11.0&show=api-pagewaitforselectorselector-options) 選擇器如果在給定的時間范圍內無法匹配節點,就會失敗。 對于某些類型的錯誤,Puppeteer 使用特定的錯誤類處理。這些類可以通過 `require('puppeteer/Errors')` 獲得。 支持的類列表: - [`TimeoutError`](#?product=Puppeteer&version=v1.11.0&show=api-class-timeouterror) 一個處理超時錯誤的例子: ``` const {TimeoutError} = require('puppeteer/Errors');// ...try { await page.waitForSelector('.foo');} catch (e) { if (e instanceof TimeoutError) { // 如果超時,做一些處理。 }} ``` puppeteer.js中文網|error-handling puppeteer.js中文文檔, puppeteer chrome, puppeteer firefox, puppeteer api 中文文檔 puppeteer.js中文網包含了Puppeteer中文文檔,最新資訊,應用案例等。Puppeteer 是一個 Node 庫,它提供了一個高級 API 來通過 DevTools 協議控制 Chromium 或 Chrome。
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