JavaScript quick start

Task description: JavaScript language has many grammatical concepts, such as functions, events and so on. This article is just a quick introduction. It will complete the implementation of the basic interactive function of a web page, so as to have a basic understanding of JavaScript. Before learning this content, you should have mastered some ...

Posted by sealMail on Tue, 10 May 2022 03:27:01 +0300

Why is Proxy so important in Javascript?

Four practical examples help you master the powerful functions of JavaScript What is an agent? What exactly does it do? Before explaining, let's look at a real example. Each of us has a lot of things to do in our daily life, such as reading e-mail, receiving express and so on. Sometimes we may feel a little anxious: there are a lot of spam on ...

Posted by dennyx on Tue, 10 May 2022 03:05:57 +0300

vue core interview question: vue parent-child component life cycle call sequence

1, Order 1. Load render pass Parent beforecreate - > parent created - > parent beforemount - > child beforecreate - > child created - > child beforemount - > child mounted - > parent mounted 2. Sub component update process Parent BeforeUpdate - > child BeforeUpdate - > child updated - > parent updated 3. Paren ...

Posted by CodeBuddy on Mon, 09 May 2022 23:06:28 +0300

Object method commonly used in ES6: object keys(),Object.values() ...

1. Object.assign() Object.assign() is used to copy the values of all enumerable attributes from one or more source objects to the target object. Syntax: object assign(obj, ...sources) obj: target object sources: source object, which can be multiple Return target object Copy an object const obj = { a: 1 } const copy = Object.assign({}, obj) co ...

Posted by benji2010 on Mon, 09 May 2022 13:38:14 +0300

JS inheritance method

Extensions class of es6 class Person { constructor(gender) { this.gender = gender; } say(msg) { console.log(msg); } } class Teacher extends Person { constructor(age) { super('male'); this.age = age; } } const mike = new Teacher(26); mike.age // 26 mike.gender // male mike.say('hello') // ...

Posted by naveendk.55 on Mon, 09 May 2022 12:26:39 +0300

JS object-oriented inheritance

Prototype chain In JS, the prototype chain is the way to implement inheritance. Since there is no concept of class in JS, it implements the inheritance relationship between constructors. The so-called inheritance is that the properties and methods in the parent can be accessed in the child object. The following code implements the inheritance ...

Posted by richardbotw on Mon, 09 May 2022 09:51:08 +0300

bugkuctf

bugkuctf: https://ctf.bugku.com Target address: http://123.206.31.85:1616/ After entering the drone, select the character attribute you want and start the game After looking at other game functions, I found that we need to defeat the old demon through crusade to clear the level You can buy Tathagata Palms from the mall, but you need to ...

Posted by Mirge on Mon, 09 May 2022 00:24:45 +0300

Communication methods in Vue

Communication methods in Vue 1.props/$emit Parent to child (property transfer props) When a parent component transmits data to a child component, it transmits data through attributes: 1. Parent component: use attribute binding to transfer data ==Note: = = son refers to the name of the sub component, for example: This is generally used when ...

Posted by kobmat on Sun, 08 May 2022 22:08:31 +0300

10 HTML file upload techniques useful to web developers

By Tapas AdhikaryTranslator: front end XiaozhiSource: dev Like and watch again to form a habitThis article GitHub https://github.com/qq44924588... It has been included in the, more classification of high praise articles in previous periods, and also sorted out a lot of my documents and tutorial materials. Welcome Star and perfect. You can revie ...

Posted by tstout2 on Sun, 08 May 2022 10:33:04 +0300

JS notes - iterators

iteration means "repeat" or "come again". In the field of software development, it means that a program is executed repeatedly in sequence, usually with clear termination conditions. I Understanding iteration Counting loops are the simplest iterations Loop is the basis of the iteration mechanism, because it can specify the n ...

Posted by Fabis94 on Sun, 08 May 2022 07:38:24 +0300