Grabbing json data of county map

Find a lot of resources on the Internet, either the data is too old, data is wrong, or to charge, so I grabbed Ali's data. data source Project source code Data is asynchronously fetched and written, so axios is used. The node version is 12.10.0.Introduce needed resources: import http from 'axios' import fs from 'fs' Address and address splicin ...

Posted on Fri, 11 Oct 2019 09:15:05 -0700 by phplearner

js sorting method

Summary and comparison of js ten classical algorithmsExcerpts from the original https://www.cnblogs.com/AlbertP/p/10847627.htmlA map summarizes: Overview of Mainstream Sorting AlgorithmsNoun Interpretation:n: Data sizek: number of barrelsIn-place: Constant memory, no extra memoryOut-place: Take up extra memoryStability: The order of the two equ ...

Posted on Fri, 11 Oct 2019 01:18:05 -0700 by Supplement

How to Use Thinkphp 5.1 to Realize Conditional Query and Paging in PHP

ps: This is a problem I had a long time ago. Actually, it's very simple. Listen to me slowly. First up code back-end <?php namespace app\admin\controller; use think\Controller; use think\Request; class Brand extends Controller { /** * Display Brand List * * @return void */ public function lst() { / ...

Posted on Thu, 10 Oct 2019 09:07:44 -0700 by AL123

A case study to understand the scope slot of Vue.js

Original address: Getting Your Head Around Vue.js Scoped Slots Author: Anthony Gore Translator: Chor Scope slot is a very useful feature in Vue.js, which can significantly improve the universality and reusability of components. The problem is that it's really not easy to understand. It is no less painful to try to understand the intricate r ...

Posted on Thu, 10 Oct 2019 06:08:41 -0700 by konky

A Probe into koa-session Source Code

Introduction Now that you've dug a hole, you have to fill it in. In the previous article on Authentication of Next, we talked about how to use koa-session, mainly configuring and changing the content of session. Let's review it. This is the configuration file. app.use( session( { key: "lxg", overwrite: true, //Overwrite Cookie ...

Posted on Thu, 10 Oct 2019 05:39:40 -0700 by ankurcse

Note a pit encountered when crypto's createCipheriv method was used to encrypt node.js

Node.js crypto module A set of encapsulations including hashing, HMAC, encryption, decryption, signature and verification of OpenSSL are provided. Specific methods of use can be referred to in the description of this article: node.js_crypto module. This paper focuses on the pits encountered when using the createCipheriv method. The correspond ...

Posted on Thu, 10 Oct 2019 05:09:41 -0700 by uluru75

What is the content-type request for text/event-stream?

Recently, when learning the hot update of webpack, we found that there is a _webpack_hmr request, content-type is text/event-stream, which we haven't seen before, so learn to record it. Web pack hot updates need to push information to browsers, and websocket is usually thought of, but there is another way, called Server-Sent Events (SSE). SSE i ...

Posted on Thu, 10 Oct 2019 03:24:39 -0700 by prashanth0626

Cookies and session s in python Django

Catalog Cookie 1.1 Get Cookie 1.2 Setting Cookie Session 1. Database Session 2. Caching Session 3. Document Session 4. Caching + Database Session Cookie 1.1 Get Cookie request.COOKIES["key"] request.get_signed_cookie(key,default=RAISE_ERROR, salt='', max ...

Posted on Thu, 10 Oct 2019 01:58:34 -0700 by Gappa

[Deep react-redux] Manual implementation of a react-redux

What is react-redux React-redux is the official React binding library of redux. It helps us connect the UI layer to the data layer. The purpose of this article is not to introduce the use of react-redux, but to implement a simple react-redux, hoping to help you. First of all, think about how to develop our react project with Redux if we don't u ...

Posted on Wed, 09 Oct 2019 16:12:24 -0700 by nickiehow

Deep Analysis of JS-new Operational Constructor

Now look at a familiar piece of code: function Parent(name) { this.name = name; this.say = function () { return this.name; }; } Parent.prototype.age = 18; var child = new Parent("pch"); console.log(child); // Output: Parent {name:'pch', say: [Function]} console.log(child.name); // Output: pch console.log(child.say()); // O ...

Posted on Wed, 09 Oct 2019 15:58:45 -0700 by koddos