Allocation of privileges by zTree

First of all, show the effect map. All permissions are displayed here and the permissions of this role are bound. Overall thinking: Privilege display: first, get all the privilege tree from the privilege table, then get the corresponding privilege from the privilege role middle table (there is a ...

Posted on Thu, 03 Oct 2019 14:10:01 -0700 by van__

JSON: Structured Data Format

JSON is a subclass of javascript and is gradually replacing XML as a better structured data format for Internet transmission. To understand JSON, it is important to understand that it is a data format, not a programming language. Syntax    //javascript var object = { "name":"lihua", "age":"20", "gender":undefined } ...

Posted on Thu, 03 Oct 2019 00:06:31 -0700 by doreg28

How to solve multiple ajax requests sharing a callback function?

There is a scenario where there are multiple lists on a page that require multiple requests to obtain data. After all the data is retrieved, a callback needs to be executed. But these interfaces themselves are not interdependent. There is no way to put callback in a specific request, because the request data is asynchronous, there is no guarant ...

Posted on Thu, 03 Oct 2019 00:02:47 -0700 by lauthiamkok

Using canvas to make a cinema seating function in react

Frontier: The project uses the create-react-app scaffolding, which is to make an effect so there is only one page, but also uses the react-router-dom routing to details as the path='/'home page. Design sketch:I. App.js import React from 'react'; import {BrowserRouter,Route} from 'react-router-dom' import Details from './routes/Details' funct ...

Posted on Wed, 02 Oct 2019 19:25:32 -0700 by kyberfabrikken

Imitate JQuery to encapsulate ajax functionality

requirement analysis Because sometimes you only need an ajax function to improve performance, you don't want to introduce a larger JQ file and try axios, but get method does not support multi-layer nested json, and the way of receiving back-end post seems to change. Maybe I don't know how to use it. In fact, there is nothing to receive in anot ...

Posted on Wed, 02 Oct 2019 13:57:43 -0700 by 01706

Talk about nacos Service Reporter

order This paper mainly studies the Service Reporter of nacos. ServiceManager.init nacos-1.1.3/naming/src/main/java/com/alibaba/nacos/naming/core/ServiceManager.java @Component @DependsOn("nacosApplicationContext") public class ServiceManager implements RecordListener<Service> { /** * Map<namespace, Map<group::serviceName, ...

Posted on Wed, 02 Oct 2019 07:28:21 -0700 by Steven_belfast

ajax+JQuery Implementation of Intelligent Search Box Similar to Baidu

Recently, I learned ajax again. The class teacher let us achieve a function similar to the homepage search box. When we first started, we didn't have a clue. After consulting a lot of resources on the Internet, we found that there was some difference between what we did before and what we have now, so we hope to help you. Let's first show the ...

Posted on Wed, 02 Oct 2019 06:46:52 -0700 by bashaash

Basic Use of OkHttp3

brief introduction OKhttp3 is an efficient, bandwidth-saving HTTP client that supports HTTP2. Portal: GitHub: https://github.com/square/okhttp Official website: https://square.github.io/okhttp/ Introduction framework Under dependencies node in build.gradle (app), add: implementation("com.squareup.ok ...

Posted on Wed, 02 Oct 2019 05:48:14 -0700 by joebWI

Client and Server for Simple File Transfer

Before doing this program, we should first understand the pack and unpack functions in struct module, which can be translated for reference.Strct. pack and struct.unpack Simply put, struct.pack ('i', int) packages integer data into bytes Strct. unpack ('i', bytes) can decompose bytes'packets into tuples ...

Posted on Wed, 02 Oct 2019 03:23:19 -0700 by Mikemcs

In just three steps, upgrade koa's node service to https

We start writing a bunch of unnecessary content that is a hooligan, so we start talking about upgrading steps. Installation of necessary packages yarn add https fs koa-sslify perhaps npm i -S https fs koa-sslify https is used to start https services fs is used to obtain read certificate files koa-sslify is used to force http requests into htt ...

Posted on Tue, 01 Oct 2019 23:46:45 -0700 by xphoenixx