qqpann · August 16, 2022 20:21
diff --git a/file0.txt b/file0.txt
 mkdir try-puppeteer
 cd try-puppeteer
 npm i --save puppeteer
diff --git a/file10.txt b/file10.txt
 const out = await page.evaluate(() => document.querySelector('.errmsg').innerText);
 console.log(out);
diff --git a/file11.txt b/file11.txt
 await page.screenshot({path: './screenshot.png', fullPage: true});
diff --git a/file2.js b/file2.js
 puppeteer.launch({headless: false});
diff --git a/file2.txt b/file2.txt
 puppeteer.launch({headless: false});
diff --git a/file3.txt b/file3.txt
 await page.goto('https://twitter.com/qiugits');
diff --git a/file4.txt b/file4.txt
 await page.type('input[name="code"]', 'Hello');
diff --git a/file5.txt b/file5.txt
 await page.click('input[name="button"]');
diff --git a/file6.txt b/file6.txt
 await page.waitFor('input');
diff --git a/file7.txt b/file7.txt
 await page.waitFor('.success, .error');
diff --git a/file8.txt b/file8.txt
 if (await page.$('div.errmsg')) { /* do something */ }
diff --git a/file9.txt b/file9.txt
 if (await page.$$eval('input', inputs => inputs.length) == 2) { /* do something */ }
diff --git a/main.js b/main.js
 const puppeteer = require('puppeteer');

 // 非同期処理
 (async() => {

  // 非同期処理で前後の順番を保つには、awaitをいちいち使う
  const browser = await puppeteer.launch();  // ブラウザをHeadlessで起動
  const page = await browser.newPage();  // このpageに

  // * * *
  // pageに対して操作する
  // * * *

  browser.close();  // ブラウザを閉じる
 })();
	const out = await page.evaluate(() => document.querySelector('.errmsg').innerText);
	console.log(out);
	const puppeteer = require('puppeteer');

	// 非同期処理
	(async() => {

	// 非同期処理で前後の順番を保つには、awaitをいちいち使う
	const browser = await puppeteer.launch(); // ブラウザをHeadlessで起動
	const page = await browser.newPage(); // このpageに

	// * * *
	// pageに対して操作する
	// * * *

	browser.close(); // ブラウザを閉じる
	})();