Hey there! Let's break down why your crawler is only grabbing content up to that prerenderReady line—and how to fix it.

Why This Happens #

The target site https://acgn-stock.com/ likely relies on JavaScript to dynamically load most of its content. When you use requests.get(), you're only fetching the initial static HTML skeleton the server sends upfront. The rest of the page content gets rendered by a browser after executing JavaScript, which requests can't do (it doesn't run JS at all). That's why you only see content before <script>window.prerenderReady = false</script>—that's the static portion served directly by the server.

Fixes to Try #

1. Use a Browser Automation Tool (Render JavaScript) #

Tools like Selenium or Playwright simulate a real browser, which runs JavaScript and loads the full rendered page. Here's a practical example with Selenium:

from selenium import webdriver
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.by import By
from bs4 import BeautifulSoup

# Initialize Chrome browser (make sure you have chromedriver installed matching your Chrome version)
driver = webdriver.Chrome()
driver.get("https://acgn-stock.com/")

# Wait for the page to fully load (adjust the wait condition based on the content you need)
try:
    # Wait up to 10 seconds for a key page element to appear (replace with an element present on the full page)
    WebDriverWait(driver, 10).until(
        EC.presence_of_element_located((By.TAG_NAME, "main"))
    )
except:
    pass  # Fallback if timeout—we'll still grab whatever content has loaded

# Get the fully rendered page source
full_page_source = driver.page_source
driver.quit()

# Parse with BeautifulSoup as usual
soup = BeautifulSoup(full_page_source, "html.parser")
print(soup.prettify())

2. Directly Call the Site's API (More Efficient) #

Most dynamic sites fetch data via hidden API endpoints instead of rendering everything server-side. You can bypass parsing HTML entirely by finding these APIs:

• Open your browser's DevTools (F12) → Go to the Network tab → Refresh the page.
• Look for requests under the XHR or Fetch category—these are the API calls that load the site's actual data.
• Copy the API URL, headers, and any required parameters, then use requests to call it directly.

Example (adjust based on the actual API you discover):

import requests

headers = {
    "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Safari/537.36",
    # Copy other necessary headers (like Referer, Cookie) from your browser's DevTools
}

# Replace with the actual API endpoint you find
api_url = "https://acgn-stock.com/api/example-data"
response = requests.get(api_url, headers=headers)

# Most APIs return JSON data
data = response.json()
print(data)

Which Option to Pick? #

• If you need the exact rendered HTML structure, go with Selenium/Playwright.
• If you only need the underlying data (like stock info, user data), using the API is faster and more reliable—no need to parse messy HTML at all.

内容的提问来源于stack exchange，提问作者Eric WU