JavaScript

Three major features of object-oriented language: inheritance, encapsulation, polymorphismDOCTYPE HTML>HTML>Head> title>Extend-opptitle>Head>Scripttype= "Text/javascript"> functionPerson (name,sex) { This. Name=name; This. Sex=sex; }

//constructor FunctionfunctionFn (name,age) { This. Name =name; }//Display PrototypesFn.prototype.alertName =function() {alert ( This. name);}//Create Strengthvarf =NewFn (' CLM '); F.printname=function() {Console.log ( This. name);} F.printname ();/

There is a small need in a recent activity page where users can click or press and hold to copy content to the Clipboard, recording the implementation process and the pits encountered.Common methodsCheck out the almighty Google, now the common

Adorner mode What is an adorner? Formerly known as decorator is translated into adorners can be understood as decorative decoration packaging and other meansThe role in realityA house can become more ornate and more functional through

Example of an exponential operator (* *)console.log(2 ** 2); // 4console.log(3 ** 2); // 9console.log('3' ** '2'); // 9console.log((() => { let x = 2; let y = 3; x **= y; return x;})()); // 8II, Math.pow () 1. DefinitionThe Math.pow ()

The Array type is probably the most common type in JavaScript. Also, arrays in JavaScript are quite different from arrays in most other languages. Although JavaScript arrays and arrays in other languages are an ordered list of data, unlike other

Conditional statementsThe conditional statement (Conditional statement) is one of the basic constructs in JavaScript, and the program executes or skips a branch depending on whether the expression is true or false, and the conditional statement can

Select label sets the selected option method by default. select label There are two methods. FirstThe attribute is used to set the selected items. This method can control the output results in dynamic languages such as php in the background as

Summarize js function knowledge points and js function knowledge points In js, the reference type is a data structure, which contains five reference types: Object, data, Array, and re. Enter the code gExp and Function. Today we will talk about the

Summary of JS strict mode knowledge points and js knowledge points The so-called strict mode is actually a string that does not assign a value to any variable "use strict" If this prompt is displayed in the global scope, the entire script will adopt

CSS layout (1) Box Model and css layout Box Model I. Box Model Standard Box Model We can see that the standard w3c box model has the following scopes: content, padding, border, and margin, and the content Part does not contain other parts.     Weird

The method for integrating vue into the jquery/bootstrap project, vuejquery Description: The project uses jquery and bootstrap to manage the background. Some logon interfaces run on the node server, and most interfaces are implemented using

Vue implements text color switching after clicking, vue color changing Here, we use text examples to illustrate how image switching works. The general idea is:The same span of two classes is the text before and after the switch. The same class is

JQuery implements an example of a gradient animation with a responsive mouse transparency. jquery example This article describes how jQuery implements a mouse responsive transparency gradient animation. We will share this with you for your reference.

Nginx deployment method for accessing the project created by vue-cli, nginxvue-cli From the official vue-router website, we learned that backend configuration is required for packaging a vue project built in history mode, while hash is not required,

Simple Method example for adding elements to new nodes in JS, sample for js element nodes This article describes how to add new elements to a node in JavaScript. We will share this with you for your reference. The details are as follows:

Vue is used to pre-load the image watch, Watch application scenarios I want to believe that image pre-loading has been touched by everyone. When there are a large number of images, we will display the homepage only to ensure that all the page images

Vue parent component click to trigger sub-component event instance description, vue instance description I recently learned about the communication between Vue parent and child components. I just encountered an event dispatching and receiving

Based on Singleton in the design mode, JS implements the function of adding, deleting, modifying, and querying data by encapsulation. The design mode is singleton. This article describes how to add, delete, modify, and query data by using the

Differences between let and var variables defined in js, jsletvar Variables Strict javascript Mode The first touch with the let keyword has a very important concept that is "javascript strict mode". For example, if the following code is run, an