Playwright is a Node.js library that provides a high-level API to automate web browsers.
It allows you to automate browser tasks such as generating screenshots, creating PDFs, and testing web pages by simulating user interactions.
Playwright is similar to Puppeteer, but it supports more browsers and it also provide capabilities for automation of browser like Microsoft Edge and Safari.
Playwright is commonly used for web scraping, end-to-end testing, and browser automation.
Playwright is a spiritual successor to Puppeter and is available in more languages and has access to more browser types.
ChromeDP is an open-source library for driving browsers using the Chrome DevTools Protocol (CDP) in the Go programming language.
It is a high-level library that abstracts away the low-level details of interacting with the CDP and provides a simple,
intuitive API for performing common browser automation tasks such as clicking elements,
filling out forms, and taking screenshots.
ChromeDP also supports parallel execution of browser tasks, making it well-suited for large-scale web scraping
and testing applications. It is considered as one of the most popular Go package for automation and scraping tasks.
```javascript
const { chromium } = require('playwright');
(async () => {
const browser = await chromium.launch();
const context = await browser.newContext();
const page = await context.newPage();
await page.goto('https://www.example.com/form');
// fill in the form
await page.fill('input[name="name"]', 'John Doe');
await page.fill('input[name="email"]', 'johndoe@example.com');
await page.selectOption('select[name="country"]', 'US');
// submit the form
await page.click('button[type="submit"]');
// wait for the page to load after the form is submitted
await page.waitForNavigation();
// take a screenshot
await page.screenshot({path: 'form-submission.png'});
await browser.close();
})();
```
```go
package main
import (
"context"
"fmt"
"github.com/chromedp/chromedp"
)
func main() {
var title, firstParagraph string
// create context
ctx, cancel := chromedp.NewContext(context.Background())
defer cancel()
// run task list (a scraping scenario)
err := chromedp.Run(ctx,
// go to page
chromedp.Navigate("https://www.example.com"),
// wait for element to load
chromedp.WaitVisible("body"),
// extract text from an element (css selector)
chromedp.Text("title", &title),
// extract first paragraph element
chromedp.First(chromedp.ByTagName("p"), &firstParagraph),
)
if err != nil {
fmt.Println("error:", err)
return
}
fmt.Printf("Title: %s\n", title)
fmt.Printf("First paragraph: %s\n", firstParagraph)
}
```