echarts instrument cluster replacement style full circle to semicircle

Question: I want to change the default style of the dashboard in Figure 1 to the style of the semicircle in Figure 2. In the official website, you can change the style of the dashboard by changing the theme button, but there is no actual demo ~ how to change the style?   Picture 1.png Picture 2.png Reference API: http: ...

Posted by Eggzorcist on Fri, 15 Nov 2019 11:44:28 -0800

Using PHP framework to realize WebSocket online chat communication system

To use Swoole in ThinkPHP, you need to install the think Swoole composer package, provided that the system has installed the Swoole PECL extension To install think swoole, execute the composer command in the project root directory of tp5: composer require topthink/think-swoole If you don't say much, go straight to the code: To create a WebSocke ...

Posted by stevenszabo on Fri, 15 Nov 2019 07:01:21 -0800

The mobile terminal h5 determines whether to scroll to the bottom and pull down to load

How to judge whether the scroll reaches the bottom? The first knowledge to understand: scrollHeight,clientHeight,scrollTop scrollHeight Read only property, height includes all contents, including inner margin, but not including horizontal scroll bar, border and outer margin. clientHeight It is also a read-only attribute. The element without ...

Posted by fahrvergnuugen on Fri, 15 Nov 2019 06:33:34 -0800

jQuery source parsing DOM operation module package element details

This section describes the package element sub module in the DOM operation module, which can replace the currently matched element with the specified DOM element, as follows: wrap(html) adds a layer of DOM elements to the outer layer of each matching element. This method traverses the matching element collection and calls the. wrapAll() method ...

Posted by travelbuff on Thu, 14 Nov 2019 20:43:43 -0800

SpringBoot+Poller Long Connection Implements Scavenging Logon Function Demo-Postman Simulated Scavenging Request

Scavenging Logon Function Demo-Postman Simulated Scavenging Request Scavenging Logon Function - Polling or Long Connection WebSocket - Zxing Generate 2D Code Scavenging login is actually a login request, but the information is stored on the user's mobile phone. It also needs two-dimensional code to verify whether the matching method can be used ...

Posted by Rob2005 on Wed, 13 Nov 2019 23:15:23 -0800

WebSocket online chat communication system can also be developed with PHP framework

To use Swoole in ThinkPHP, you need to install the think Swoole composer package, provided that the system has installed the Swoole PECL extension To install think swoole, execute the composer command in the project root directory of tp5: composer require topthink/think-swoole If you don't say much, go straight to the code: To create a WebSocke ...

Posted by Xzone5 on Wed, 13 Nov 2019 10:54:37 -0800

Get SMS verification code countdown

Development tools and key technologies: back end Author: Wang Liyan Time of writing: May 12, 2019 Hi, lovely me again! Recently, I'm working on a project. It's necessary to register and log in. So what I'm going to say today is to get the countdown of SMS verification code when registering, because when registering, you need to ...

Posted by 0p3n_p0rT on Tue, 12 Nov 2019 09:09:12 -0800

15. Spring MVC for json interaction

Spring MVC for json interaction json data format is commonly used in interface calls and html pages. json format is simple and easy to parse. Request json, output json. It is not convenient for the front page to convert the requested content into json. Request key/value and output json. This method is commonly used. Environmental preparation ...

Posted by jpraj on Tue, 12 Nov 2019 06:16:30 -0800

JavaScript Design Mode for Refining Internal Work

Sensation: Taste: Black pepper steak Cooking time: 20 min To be a good software developer, you need strong craftsmanship.When you encounter problems, find ways to solve them.Most people rely more on passion in the early stages, but need some patience in the middle and late stages. After working for a long time, it is natural to think about the ...

Posted by zeropaid on Mon, 11 Nov 2019 19:17:53 -0800

Vue + eckarts line chart

In jQuery, implement a line chart, and [front end statistics chart] echarts implement a single line charthttps://www.jianshu.com/p/0354a4f8c563. Now to achieve this, Vue + eckarts implements a line chart and opens the previous mint project: 1: install echarts in the project cnpm install echarts --s 2: introduce where charts a ...

Posted by happyneil on Mon, 11 Nov 2019 14:56:38 -0800