jd_spider

# coding: utf-8 
from selenium import webdriver import time


driver = webdriver.Firefox()

driver.get('https://www.jd.com')

time.sleep(2)

driver.find_element_by_id('key').send_keys(u'笔记本电脑') ele = driver.find_element_by_class_name('button')

ele.click()

time.sleep(2) for x in range(1,11,2):
        # 暂停1秒再开始滚动
        time.sleep(1)
        j = x/10.0
        # %f float小数类型的占位符
        js = 'document.documentElement.scrollTop = document.documentElement.scrollHeight * %f'%j
        # 执行js代码
        driver.execute_script(js)

time.sleep(2)

next = driver.find_element_by_class_name('pn-next')

next.click()