如何用selenium webdriver 捕获js error

### 问题

捕捉页面上js error

### 解决办法

从Selenium webdriver log 中解析

# -*- coding:utf8 -*-

import unittest
from selenium import webdriver
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities

class CaptureJSError(unittest.TestCase):

@classmethod
def setUp(self):
self.driver = webdriver.Remote('http://yourseleniumgrid:4444/wd/hub',
desired_capabilities=DesiredCapabilities.FIREFOX)
def test_search_in_python_org(self):
driver = self.driver
driver.get("http://foopagewitherr:80")
logs = driver.get_log('browser')
for log in logs:
if log['level'] == 'SEVERE':
print log
# output is {u'timestamp': 1474618002360, u'message': u'TypeError: $(...).ready_ is not a function', u'level': u'SEVERE'}

@classmethod
def tearDown(self):
self.driver.close()

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

Note:

这里的webdriver是由Selenium Grid提供的，本地webdriver 应该也是可以的

### 引用
https://www.3pillarglobal.com/insights/how-to-capture-javascript-errors-from-your-web-application