Programmer Think

In the last section, we realized the recognition of the test verification code, but there is another common and widely used test code besides the test. The more representative one is the touch verification code. Maybe you are unfamiliar with the name, but you must have seen similar authentication codes, such as 12306, which is a typical touch ...

1. Introduction of Data Acquisition Tools Most of the dynamic websites are now launched by the browser through js ajax requests, get the data and then render to complete the page display. In this case, it is not feasible to collect data, initiate http get request through script, and parse and extract useful data after getting the DOM document p ...

Today, we grab a website, this website, the content is related to netizens'messages and replies, particularly simple, but the website is gov. The website ishttp://www.sjz.gov.cn/col/1490066682000/index.html First of all, in order to learn, no malicious crawl information, believe it or not, I do not ha ...

The anti-pickpocket mechanism of Taobao is much higher than that of other websites. Let's first talk about the problems I encounter in data acquisition. First of all, when I started with the request, I found that when the right-click open source code, the web page information could not be found at ...

Today, we grab a website, this website, the content is related to netizens'messages and replies, particularly simple, but the website is gov. The website ishttp://www.sjz.gov.cn/col/1490066682000/index.html First of all, in order to learn, no malicious crawl information, believe it or not, I do not ha ...

Continuous integration unit testing karma Karma yesGoogleAn Open Source BasedNode.js Of JavaScript Test Execution Process Management Tool(Test Runner). The tool can be used to test all mainstreamsWebBrowsers can also be integrated into CI (Continuous integration)Tools can also be used with other code editors. Interface-free browsers we testedph ...

What is the Selenium library? Automated testing tools, support a variety of browsers. Support browsers include IE (7, 8, 9, 10, 11), Mozilla Firefox, Safari, Google Chrome, Opera, etc. The crawler is mainly used to solve the problem of JavaScript rendering. Used to drive the browser and give the browser action. Install the Selenium library: ...