Game making based on canvas

Use canvas canvas to design games 1. Catalogue 1. Introduction to Canvas 2. Cases 2. Introduction to canvas What is a Canvas element The canvas element of HTML5 uses JavaScript to draw images on a Web page.The canvas is a rectangular area where you can control each pixel.Canvas has a variety of ways to draw paths, rectangles, circles, character ...

Posted by spider661 on Mon, 23 Mar 2020 09:54:35 -0700

JQuery - about jQuery operation properties, elements, size locations, etc.

1. Operations on attributes The so-called attribute operation is to manipulate the attributes of a series of elements, value la class.... Especially the operation on input is very important. To complete the next advanced Sao operations on the framework, let's now take a look at the three prop(), attr(), and data() operations common to jQuery a ...

Posted by Elemen7s on Sun, 22 Mar 2020 19:46:56 -0700

EasyUI tree table displaying Json data

Use the TreeGrid component of EasyUI to format and display the Json data. First, read in the Json file, turn it into a Map object, recurse each Map, and determine whether its value is the basic type or Map. If the base type, the attribute node. If Map is an object, it needs to be traversed again. 1.Map resolves Tree objects Tree object public ...

Posted by nashruddin on Sun, 22 Mar 2020 08:22:02 -0700

json operation for Golang

JavaScript Object Representation (JSON) is a standard Protocol for sending and receiving structured information.JSON is not the only standard Protocol among similar protocols.XML (7.14), ASN.1, and Google's Proocol Buffers are similar protocols and have their own features, but JSON is the most widely used because of its simplicity, readability ...

Posted by GregArtemides on Sun, 22 Mar 2020 00:00:01 -0700

JS -- quick sorting and merging

Catalog Quick sorting and merging of JS sorting algorithm Quick sort Merge sort Quick sorting and merging of JS sorting algorithm Quick sort Principle: select a key (generally the first element) and divide the array into two regions. All the regions on the left are less than or equal to the key, ...

Posted by willcodeforfoo on Sat, 21 Mar 2020 07:05:21 -0700

JS implementation of bottom touching event in rolling area

Effect Paste the effect display: Implementation ideas In terms of style, we don't need to elaborate. The scrolling area is set to a fixed height. Set overflow-y: auto to achieve this. Next let's look at the implementation of js, which is also very simple. The trigger condition is: visible height + rolling distance > = actual height. I will u ...

Posted by gilang4 on Sat, 21 Mar 2020 02:44:40 -0700

JS -- simple sorting of sorting algorithm

Catalog Simple sorting of JS sorting Bubble sort Direct insert sort Direct selection sorting Simple sorting of JS sorting Bubble sort Time complexity: O(n^2) Stable sorting algorithm Features: looking from the back to the front, all the numbers in the ordered area must be less than (or g ...

Posted by freedomclan on Fri, 20 Mar 2020 10:44:40 -0700

How to detect DIV size change?

I have the following example html, which has a DIV with a width of 100%.It contains some elements.Internal elements may be repositioned and div sizes may change when executing window resizing.I asked if it was possible to hook up div size change events?And how do you do that?I currently bind the callback function to the jQuery resize event on ...

Posted by Thumper on Fri, 20 Mar 2020 01:11:22 -0700

Create operator in RxJS

The creation operators in RxJs are the starting point of creating data flow. These operators can create a flow out of nothing or according to other data forms. The Observable constructor can directly create a data flow, such as: const $source=new Observable(observer=>{ observer.next(1); observer.next(2); observer.next(3); }) H ...

Posted by brij_theinvader on Thu, 19 Mar 2020 04:46:31 -0700

CAS Single Sign On - Customize the login interface and form information

In the previous section, we talked about the configuration and management of services in CAS. We have some knowledge about adding services in CAS to the registry. If you are not familiar with this, you can review it CAS Single Sign-on (5) - Service Configuration and Management. Today, we continue with articles that we haven't covered before on ...

Posted by Kor Ikron on Wed, 18 Mar 2020 22:55:16 -0700