Summary of Dom Node Operation

Dom   One: Dom conceptIntroduction to Dom: The Document Object model is a complete set of methods for manipulating documents - Document - html, an object in a document, a top-level object in the dom, an object in window s, and arguably the best. Dom Node: All the steps that make up the entire html process are equivalent to all the labels, tex ...

Posted by Rheves on Tue, 21 Apr 2020 17:53:22 -0700

Pure js clock effect detailed code analysis example tutorial

Electronic clock is a common function on the Internet. When learning date object and timer function, it is a good choice to complete the production of an electronic clock. Before learning this tutorial, you need to have html and css skills, as well as a simple javascript foundation. Prepare an html element to place the clock. Create a new div e ...

Posted by Liquid Fire on Tue, 21 Apr 2020 07:02:11 -0700

ThinkPHP 6.0 learning notes - verifier

Validator By:Mirror Wang Yuyang Verifier definition For the use of verifier, it must be defined; the system provides a command to directly produce a verifier class: php think make:validate User Generate a validate folder under the automatic re application directory and generate the User.php class namespace app\validate; use think\Validate ...

Posted by e_00_3 on Tue, 21 Apr 2020 01:47:52 -0700

codeforces 985C Liebig's Barrels

Title: There are n * k boards, each bucket is composed of K boards, and the capacity of each bucket is defined as the length of the shortest board. The capacity of any two wooden barrels v1, v2 meets the requirement of | v1-v2 | < D. Ask the maximum sum of N buckets, or explain that it is impossible to make such n buckets. Ideas: greedy ...

Posted by Jeroen Oosterlaar on Mon, 20 Apr 2020 10:00:54 -0700

Using python to automatically generate software copyright source code

A small demand: When applying for software copyright, you need to submit a page of 50 lines, a total of 60 pages of source code. However, the designed project is saved in a multi-level directory and does not want to be copied one by one, so we get all the files in the directory through python and os modules, re regularize and filter the inval ...

Posted by Angry Coder on Sun, 19 Apr 2020 08:13:25 -0700

Overview of common new features for Typescript 3.8

Write on top 3.8 added several interesting features, optimized the module part of ECMAScript, #use of private fields instead of less stringent privates, and so on. 1. Import and export methods for type restrictions (Type-Only Imports and Export) TypeScript 3.8 adds a new syntax for type-only import and export. import type { SomeThing } f ...

Posted by fahad on Sun, 19 Apr 2020 03:13:25 -0700

springboot parameter check

SpringBoot has a built-in Hibernate Validator as the checking framework, so as long as we have integrated SpringBoot, we can use Hibernate Validator to complete parameter checking. Common Notes @Null: The commented property must be null; @NotNull: The commented property cannot be null; @AssertTrue: The commented property must be true; @AssertF ...

Posted by soldbychris on Sat, 18 Apr 2020 21:09:36 -0700

Ideas and codes for exponential smoothing of one, two and three times

The commonly used exponential smoothing methods are first exponential smoothing, second exponential smoothing and third exponential smoothing. Higher exponential smoothing is rarely seen. Therefore, this paper focuses on the characteristics and differences of first, second and third exponential smoothing. One-time exponential smoothing is gene ...

Posted by the_manic_mouse on Sat, 18 Apr 2020 19:27:39 -0700

StackOverflow Weekly - Are you going to have all these high-profile questions?

I found some high-profile and high-profile questions from Stack Overflow.These questions may not normally be encountered, but since the highly focused questions and highly praised answers are generally accepted, they will be more handled in the future, whether at work or in interviews, if we learn in advance.This article is the first week's con ...

Posted by sandrob57 on Thu, 16 Apr 2020 23:01:11 -0700

Detailed explanation of various derivations in Python Programming

Derivation formula We've learned the simplest list derivation and generator expressions before. But in addition, there are dictionary derivation, set derivation and so on. The following is a detailed derivation format with list derivation as an example, which is also applicable to other derivation. variable = [out_exp_res for out_exp in input ...

Posted by Rony on Thu, 16 Apr 2020 07:08:51 -0700