使用JavaScript操作页面元素

       在webdriver脚本代码中执行JavaScript代码，来实现对页面元素的操作。此种方式主要用于解决在某些情况下，页面元素的.click()方法无法生效等问题。

#!usr/bin/env python  
#-*- coding:utf-8 -*-  
""" 
@author:   sleeping_cat
@Contact : zwy24zwy@163.com
""" 
#操作web页面的滚动条

from selenium import webdriver
import unittest
import traceback
import time

class TestDemo(unittest.TestCase):
    def setUp(self):
        self.driver = webdriver.Chrome()

    def test_scroll(self):
        url = 'http://111.160.124.227:9194/'
        try:
            self.driver.get(url)
            self.driver.execute_script('window.scrollTo(100,document.body.scrollHeight);')
            #使用JavaScript的scrollTo函数和document.body.scrollHeight参数，将页面的滚动条滑动到页面的最下方
            time.sleep(2)
            self.driver.execute_script('document.getElementById("namekeyword").scrollIntoView(true);')
            #使用JavaScript的scrollIntoView函数将被遮挡的元素滚到可见屏幕上
            #scrollIntoView(true)将元素滚动到屏幕中间
            #scrollIntoView(false)将元素滚动到屏幕底部
            time.sleep(2)
            self.driver.execute_script('window.scrollBy(0,400);')
            #使用JavaScript的scrollBy方法，使用0和400横纵坐标参数
            time.sleep(2)
        except Exception as e:
            print(traceback.print_exc())

    def tearDown(self):
        self.driver.quit()

if __name__ == '__main__':
    unittest.main()

#!usr/bin/env python  
#-*- coding:utf-8 -*-  
""" 
@author:   sleeping_cat
@Contact : zwy24zwy@163.com
""" 
#操作web页面的滚动条

from selenium import webdriver
import unittest
import traceback
import time

class TestDemo(unittest.TestCase):
    def setUp(self):
        self.driver = webdriver.Chrome()

    def test_scroll(self):
        url = 'http://111.160.124.227:9194/'
        try:
            self.driver.get(url)
            self.driver.execute_script('window.scrollTo(100,document.body.scrollHeight);')
            time.sleep(2)
            self.driver.execute_script('document.getElementById("namekeyword").scrollIntoView(true);')
            time.sleep(2)
            self.driver.execute_script('window.scrollBy(0,400);')
            time.sleep(2)
        except Exception as e:
            print(traceback.print_exc())

    def tearDown(self):
        self.driver.quit()

if __name__ == '__main__':
    unittest.main()

#!usr/bin/env python  
#-*- coding:utf-8 -*-  
""" 
@author:   sleeping_cat
@Contact : zwy24zwy@163.com 
""" 
#使用JavaScript操作页面元素

from selenium import webdriver
from selenium.common.exceptions import WebDriverException
import unittest
import traceback#导入堆栈类
import time

class TestDemo(unittest.TestCase):
    def setUp(self):
        self.driver = webdriver.Chrome()


    def test_executeScript(self):
        url = 'http://www.baidu.com'
        self.driver.get(url)
        searchInputBoxJS = 'document.getElementById("kw").value="光荣之路";'#构造JavaScript查找百度首页的搜索输入框的代码字符串
        searchButtonJS = 'document.getElementById("su").click()'#构造JavaScript查找百度首页的搜索按钮的代码字符串
        try:
            self.driver.execute_script(searchInputBoxJS)#通过JavaScript代码在百度首页搜索输入框中输入“光荣之路”
            time.sleep(2)
            self.driver.execute_script(searchButtonJS)#通过JavaScript代码单击百度首页上的搜索按钮
            time.sleep(2)
            self.assertTrue('百度百科' in self.driver.page_source)
        except WebDriverException as e:
            print("在页面中没有找到要操作的页面元素" ,traceback.print_exc())#打印异常的堆栈信息
        except AssertionError as e:
            print('页面不存在断言的关键字串')
        except Exception as e:
            print(traceback.print_exc())#发生其他异常时，打印异常堆栈信息

    def tearDown(self):
        self.driver.quit()

if __name__ == '__main__':
    unittest.main()