python - Selenium 驱动程序: How to find the element added after the webpage is loaded?

Question

所以网页有一个按钮，单击后会向网页添加一个元素，但我在其中找不到使用 selenium

以下一些想象的代码来解释我遇到的问题:

from selenium import webdriver
d = webdriver.Chrome()
#Go to my target website
d.get("https://some_website_url") #ref1
#Okay now loading of the website is done. `d` will not be updated and this is the problem!!

#Click my target button and an element with id="SecretButton" is loaded.
d.find_element_by_css_selector("#secretlyupdatethewebpage").click()

#Find #SecretButton but to no avail. 
#It can be found in the html panel of Chrome Developer Tools
#but cannot be found in the webdriver `d`, as `d` won't be 
#updated after #ref1
d.find_element_by_css_selector("#SecretButton").click()

如何找到#SecretButton？

Answer 1

要查找并调用 secret 按钮上的 click()，您需要为 element_to_be_clickable() 引发 WebDriverWait，您可以使用以下 Locator Strategies :

• 使用ID:

  WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.ID, "SecretButton"))).click()
  

• 使用CSS_SELECTOR:

  WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.CSS_SELECTOR, "#SecretButton"))).click()
  

• 使用XPATH:

  WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.XPATH, "//*[@id='SecretButton']"))).click()
  

• 注意:您必须添加以下导入:

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