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In JavaScript, event proxy, also known as event delegate, is to bind the listening event of the child object to the parent object of the event source object and trigger the event by using the event bubble principle. Advantages: 　　1. Improve performance without binding events to all objects; 　　2. Flexible and dynamically created new object ...

Getting started with Vue Vue introduction (1) What is Vue? Vue is a JavaScript framework (2) What's Vue for? Building user pages (3) What are the characteristics of Vue? Progressive Vue has two important features Two important features of vue framework? Data driven: without dom operation, Vue will automatically render the page acc ...

package introduction The package specification of CommonJS allows us to combine a set of related modules to form a complete set of tools The package specification of CommonJS consists of two parts: package structure and package description file Package structure: used to organize various files in the package Package description file (pa ...

Reference css file If there are many, many and complicated styles in our style, we can create a new css file and put it in html in the same directory, and then enter it in style <link href="./mystyle.css" rel="stylesheet" type="text/css"/> You can reference css files in html files, which is more convenient for modifying large files!   ...

Medical imaging Medical image refers to the technology and processing process of obtaining internal tissue image of human body or part of human body in a non-invasive way for medical treatment or medical research. At present, the main processing methods include: X-ray imaging (X-ray), computed tomography (CT ...

1 form Using front-end js to verify the form can reduce a lot of unnecessary trouble and improve user satisfaction. Otherwise, as soon as you submit data, you will go directly to the back-end server and find that you didn't fill in the name after a series of verification, which will waste a lot of time. 1.1 get form     & ...

catalogue 1, Basic grammar 2, Benefits / details of super to programming 3, Comparison between super and this super class explanation code 4, Method override / override 1. Basic introduction 2. Precautions and use details Basic introduction super represents the reference of the parent class and is used to access the properties, const ...

Mapping method of single source shortest path Heat Wave Title Link: Heat Wave Analysis: for a relatively naked problem, directly build a drawing and set a template, and I will directly use spfa water. Code implementation: #include<iostream> #include<queue> #include<cstring> using namespace std; const int N=2510,M=12410; ...

preface I saw an article before java reflection calls private related  A screenshot of the boss inside shows why the generated method accessor generated at runtime can access all methods Hehe, to tell you the truth, this problem has not been considered before However, the screenshot of the boss is still a little abstract and is not connecte ...

📋 Personal profile 💖 About the author: Hello, I'm Daniel 😜📝 Personal homepage: Hall owner a Niu🔥🎉 Support me: like 👍 Collection ⭐ Leave a message 📝📣 Series column: python web crawler🍁💬 Maxim: so far, all life is written with failure, but it doesn't prevent me from moving forward! 🔥 preface It's coming! It's coming! A ...