3. 定位单个对象

以下方法都可以用来定位某个对象，优先选择id,name.

• find_element_by_id
• find_element_by_name
• find_element_by_xpath
• 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
  
  

1. Location by ID
   

   login_form = driver.find_element_by_id('loginForm')
   

2. Location by Name
   

   username = driver.find_element_by_name('username')
   password = driver.find_element_by_name('password')

   
   
3. Location by XPATH
     绝对路径（如何html有轻微的调整就会失效）
   

   login_form = driver.find_element_by_xpath("/html/body/form[1]")
   相对路径元素位置
   login_form = driver.find_element_by_xpath("//form[1]")
   相对路径元素属性
   login_form = driver.find_element_by_xpath("//form[@id='loginForm']")
   
   相对路径子元素的name属性
   username = driver.find_element_by_xpath("//form[input/@name='username']")
   相对路径id熟悉后index
   username = driver.find_element_by_xpath("//form[@id='loginForm']/input[1]")
   相对路径name属性
   username = driver.find_element_by_xpath("//input[@name='username']")
   
   相对路径中的双属性name和type
   clear_button = driver.find_element_by_xpath("//input[@name='continue'][@type='button']")
   相对路径中前id属性后index
   clear_button = driver.find_element_by_xpath("//form[@id='loginForm']/input[4]")
   
   

   • W3Schools XPath Tutorial
   • W3C XPath Recommendation
   • XPath Tutorial - with interactive examples.

   There are also a couple of very useful Add-ons that can assist in discovering the XPath of an element:

   • XPath Checker - suggests XPath and can be used to test XPath results.
   • Firebug - XPath suggestions are just one of the many powerful features of this very useful add-on.
   • XPath Helper - for Google Chrome
     
     
4. Location Hyperlink by Link Text
   

   continue_link = driver.find_element_by_link_text('Continue')
   continue_link = driver.find_element_by_partial_link_text('Conti')
   

5. Location by Tag Name
   

   heading1 = driver.find_element_by_tag_name('h1')
   

6. Location by Class Name
   

   content = driver.find_element_by_class_name('content')

   

7. Location by CSS Selector
   

   content = driver.find_element_by_css_selector('p.content')

   
   Sauce Labs has good documentation on CSS selectors.