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    As shown in the figure, click a city to display the corresponding school name. At first, I thought it was implemented when I built the data table, but it was implemented through ajax. Idea: when the get request shows the original state (that is, the drop-down box presents the whole content). After clicking a city, submit it through ajax po ...

Preface The text and pictures of this article are from the Internet, only for learning and communication, not for any commercial purpose. The copyright belongs to the original author. If you have any questions, please contact us in time for handling. By Mona Lippo PS: if you need Python learning materials, you can click the link below to get th ...

1. requests module 1.1 introduction to requests Requests is a powerful, simple and easy-to-use HTTP request library. Compared with the previously used urllib module, the api of requests module is more convenient. (the essence is to encapsulate urlib3) You can use the pip install requests command to install, but it is easy to have network proble ...

Fabric CA is a certificate management tool of Hyperledger Fabric, which is very convenient for development and testing. In this tutorial, we will explore the use of fabric Ca and use it to complete user registration / Register and registration / Enrollment. Hyperledger Fabric is a licensed blockchain platform. Before accessing the Fabric networ ...

Based on Express, Mocha + Istanbul 1. Unit Test 1.1 Install Mocha npm i -D mocha 1.2 Create test/test.js var assert = require('assert'); describe('Array', function() { describe('#indexOf()', function() { it('should return -1 when the value is not present', function() { assert.equal([1,2,3].indexOf(4), -1); }) ...

Make sure node and express are installed before you start 1. Initialization project express ***(***Your project name) cd *** npm install(Download dependency) Startup project: Run Command: node. / bin/www, port 3001 is my own change, in / bin/www (it is recommended to use WebStorm to run, because we need to use it to write code) 2. Coding Open ...

A serialized component First let's create some api interfaces according to the restful specification. Write as follows: Courses --- GET ---> View Data ---> Return to all data lists [{}, {},] Courses---POST--->Add Data--->Return Added Data{} Courses/1 - PUT--->Update pk=1 data--->Return updated data{} Courses/1 --- DELETE ---&g ...

For the first time, it's a little bit rough to do big data analysis. But fortunately, you can come out with something. Anyway, after you get the data, you can do your own analysis The city with relatively high salary, according to Baidu recruitment information to analyze According to the market demand analysis, the age of ...

Tips for using consumer View all registered services consul catalog services Configure consumer.json { "server": true, "datacenter": "testgame", "client_addr": "0.0.0.0", "advertise_addr":"192.168.83.70", "bootstrap_expect": 1, "enable_syslog": true, "enable_script_checks": true, "data_dir": "/usr/local/consul/data", "node_name": "co ...

Python crawler is currently based on the requests package. The following is the documentation of the package. It is more convenient to check some information. http://docs.python-requests.org/en/master/ Crawling the product reviews of a tourism website, through analysis, it needs POST instructions to get json files. In short: GET is to add the ...