Hough line transformation
Hough transform is a feature extraction technology in image processing. It detects objects with specific shapes (mathematical model + parameters) through a voting algorithm. In the (one) parameter space, by calculating the local maximum value of the cumulative result, a set conforming to the specific s ...
Posted by suz_1234 on Wed, 26 Feb 2020 19:20:32 -0800
Business logic implementation of SMS verification code
Mobile phone verification code is a function that we use in our daily life
So let's assume that we can make this function work
There are many ways to achieve this. Some of them are in slow storage
Here I simply record the implementation process of the latter!
First, make a button to submit the u ...
Posted by tsilenzio on Tue, 25 Feb 2020 19:56:11 -0800
Animation script encapsulated with jquery (no animation, css3 animation, js animation)
Self packaged showhide.js
Including no animation, css3 animation, js animation
Including: fade (fade in and fade out) slideUpDown (slide up and down), slideLeftRight (slide left and right), fadeSlideUpDown (fade in and fade out + slide up and down), fadesleleftright (fade in and fade out + slide left and right)
(function($){
var transition ...
Posted by BDKR on Tue, 25 Feb 2020 07:37:31 -0800
The implementation of web page delayed loading animation-WOW.js
The content of the web page is not displayed at the beginning, and there is still a time difference with the mouse pull-down delay
At first, I thought it was difficult, complicated and tall, until I found that wow.js
The first is the demo address: https://www.delac.io/wow/
Well, dogs are really cute
Next, Download: http://www.downyi.com/dow ...
Posted by alcapone on Mon, 24 Feb 2020 23:40:19 -0800
HyperLedgr deployment, initializing the network.
start
Check the prerequisites of the platform in order to successfully develop blockchain products.
Installation prerequisites, click the link: Precondition.
For more details, click: more details.
List of prerequisites
The latest version of git
The latest version of curl
Any version of wget
Docker and docker composedocker --version re ...
Posted by VagabondKites on Sun, 23 Feb 2020 23:52:41 -0800
javascript brief demo understanding, object, BOM
Document is a javascript built-in object that represents the document part of the browser
document.write("Hello Javascript"); writes a string to the document
<html>
<body>
</body>
<script>
document.write("Hello Javascript");
</script>
</html>
This is a si ...
Posted by compsci on Sun, 23 Feb 2020 22:24:32 -0800
Header layout, search verification and AJAX automatic search prompt are encapsulated into components to improve code reusability
index.html header structure and style
Design sketch
Static style
Part of index.html
<!-- head -->
<div class="header">
<div class="container">
<!-- h1 Tag is for search engine optimization, indicating importance
But don't show too much in the page -->
<h1 class=" ...
Posted by laurajohn89 on Sat, 22 Feb 2020 23:51:28 -0800
Inheritance of JavaScript constructors
Legend https://www.xs86.com
In the previous article, we talked about JS objects, constructors, and prototype patterns. This article discusses the inheritance of JavaScript
Inheritance is one of the most popular concepts in OO language. Many OO languages support two kinds of inheritance: interfa ...
Posted by Trenchant on Sat, 22 Feb 2020 23:37:18 -0800
The principle of react router DOM
Implement rendering different components according to different paths
There are two ways to achieve this:
HashRouter: it uses monitoring hash change (there is an event hashchange) to realize routing switching. It is a routing container, rendering sub components, and passing (Context context transfe ...
Posted by subrata on Sat, 22 Feb 2020 20:17:50 -0800
Node.js Foundation: Chapter 3
Chapter 1: basic concepts of server
1.1 - composition of the website
Web applications are mainly divided into two parts: client and server.
Client: the part that runs in the browser is the interface program that the user sees and interacts with. Build using HTML, CSS, JavaScript.
Server side: the part running in the server, responsible for sto ...
Posted by ctsiow on Sat, 22 Feb 2020 01:43:32 -0800