ai-agent-book 精选快照（<2MB 代码与文档，来自 github.com/bojieli/ai-agent-book）

chapter9/browser-use-rpa/browser-use/docs/customize/actor/examples.mdx

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+---
+title: "Examples"
+description: "Comprehensive examples for Browser Actor automation tasks including forms, JavaScript, mouse operations, and AI features"
+icon: "code-simple"
+mode: "wide"
+---
+
+## Page Management
+
+```python
+from browser_use import Browser
+
+browser = Browser()
+await browser.start()
+
+# Create pages
+page = await browser.new_page()  # Blank tab
+page = await browser.new_page("https://example.com")  # With URL
+
+# Get all pages
+pages = await browser.get_pages()
+current = await browser.get_current_page()
+
+# Close page
+await browser.close_page(page)
+await browser.stop()
+```
+
+## Element Finding & Interactions
+
+```python
+page = await browser.new_page('https://github.com')
+
+# CSS selectors (immediate return)
+elements = await page.get_elements_by_css_selector("input[type='text']")
+buttons = await page.get_elements_by_css_selector("button.submit")
+
+# Element actions
+await elements[0].click()
+await elements[0].fill("Hello World")
+await elements[0].hover()
+
+# Page actions
+await page.press("Enter")
+screenshot = await page.screenshot()
+```
+
+## LLM-Powered Features
+
+```python
+from browser_use.llm.openai import ChatOpenAI
+from pydantic import BaseModel
+
+llm = ChatOpenAI(api_key="your-api-key")
+
+# Find elements using natural language
+button = await page.get_element_by_prompt("login button", llm=llm)
+await button.click()
+
+# Extract structured data
+class ProductInfo(BaseModel):
+    name: str
+    price: float
+
+product = await page.extract_content(
+    "Extract product name and price",
+    ProductInfo,
+    llm=llm
+)
+```
+
+## JavaScript Execution
+
+```python
+# Simple JavaScript evaluation
+title = await page.evaluate('() => document.title')
+
+# JavaScript with arguments
+result = await page.evaluate('(x, y) => x + y', 10, 20)
+
+# Complex operations
+stats = await page.evaluate('''() => ({
+    url: location.href,
+    links: document.querySelectorAll('a').length
+})''')
+```
+
+## Mouse Operations
+
+```python
+mouse = await page.mouse
+
+# Click at coordinates
+await mouse.click(x=100, y=200)
+
+# Drag and drop
+await mouse.down()
+await mouse.move(x=500, y=600)
+await mouse.up()
+
+# Scroll
+await mouse.scroll(x=0, y=100, delta_y=-500)
+```
+
+## Best Practices
+
+- Use `asyncio.sleep()` after actions that trigger navigation
+- Check URL/title changes to verify state transitions
+- Always check if elements exist before interaction
+- Implement retry logic for flaky elements
+- Call `browser.stop()` to clean up resources