playwright如何获取网页dom树结构并触发dom操作比如粘贴？

参考这个代码

from playwright.sync_api import sync_playwright, expect
import time
import platform # 用于判断操作系统

def get_dom_and_paste(url: str, target_selector: str, text_to_paste: str):
    """
    打开网页，获取 DOM，并在指定元素中模拟粘贴操作。

    Args:
        url: 目标网页 URL。
        target_selector: 要粘贴内容的目标元素的 CSS 选择器。
        text_to_paste: 要模拟粘贴的文本。
    """
    with sync_playwright() as p:
        browser = p.chromium.launch(headless=False)
        # 重要：授予浏览器访问剪贴板的权限
        context = browser.new_context(permissions=["clipboard-read", "clipboard-write"])
        page = context.new_page()

        try:
            print(f"正在导航到: {url}")
            page.goto(url, wait_until='domcontentloaded')
            print("页面加载完成。")

            # --- 1. 获取 DOM 树结构 ---
            print("\n--- 获取页面 DOM 结构 ---")
            dom_content = page.content()
            print("DOM 结构 (前 500 字符):")
            print(dom_content[:500] + "...")
            # 你可以将 dom_content 保存到文件或进行进一步分析
            # with open("page_dom.html", "w", encoding="utf-8") as f:
            #     f.write(dom...

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