#!/usr/bin/env python
# -*- coding:utf-8 -*-
'''
Selenium3+webdriver学习笔记13（js操作应用：弹出框无效如何处理）
'''
from selenium import webdriver
from selenium.webdriver.common.action_chains import ActionChains
from selenium.webdriver.support.select import Select
import time,os

# about:addons 火狐浏览器安装组件，访问的地址

# <input id="kw" name="wd" class="s_ipt" value="" maxlength="255" autocomplete="off">
#id
keys="设置"
delay=3
url="https://www.baidu.com/"
driver=webdriver.Firefox()

driver.get(url)

mouse=driver.find_element_by_link_text(keys)
ActionChains(driver).move_to_element(mouse).perform()
time.sleep(delay)

driver.find_element_by_link_text("搜索设置").click()
time.sleep(delay)

# <select name="NR" id="nr">
# <option value="10" selected="">每页显示10条</option>
# <option value="20">每页显示20条</option>
# <option value="50">每页显示50条</option>
# </select>

se=driver.find_element_by_id("nr")
Select(se).select_by_index(2)

#一般方式
# <div id="gxszButton"><a href="#" class="prefpanelgo">保存设置</a><a href="#" class="prefpanelrestore">恢复默认</a></div>
driver.find_element("id","gxszButton").click()
driver.find_element("class name","prefpanelgo").click()

#脚本方式
js='document.getElementsByClassName("prefpanelgo")[0].click();'
driver.execute_script(js)

driver.quit()