Python crawler Selenium element positioning method


1. Locate an element on the page:

  • find_element_by_id
  • find_element_by_name
  • find_element_by_xpath(常用)
  • find_element_by_link_text
  • find_element_by_partial_link_text
  • find_element_by_tag_name
  • find_element_by_class_name
  • find_element_by_css_selector(常用)
2. Locate multiple elements on the page
  • find_elements_by_name
  • find_elements_by_xpath
  • find_elements_by_link_text
  • find_elements_by_partial_link_text
  • find_elements_by_tag_name
  • find_elements_by_class_name
  • find_elements_by_css_selector
An example of a method for positioning using an xpath relative path:
<html>  
 <body>  
  <form id="loginForm">  
   <input name="username" type="text" />  
   <input name="password" type="password" />  
   <input name="continue" type="submit" value="Login" />  
   <input name="continue" type="button" value="Clear" />  
  </form>  
</body>  
<html>

The method of locating the username element can be expressed in the following three ways:
username = driver.find_element_by_xpath("//form[input/@name='username']")  
username = driver.find_element_by_xpath("//form[@id='loginForm']/input[1]")  
username = driver.find_element_by_xpath("//input[@name='username']")  

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