Programming VIP

I. Preface When we use Vue.js to develop a medium to large single-page application, we often encounter the following problems: How to let multiple Vue components share state How to communicate between Vue components Usually, when the project is not very complex, we will use the global event bus to solve it, but as the complexity i ...

brief introduction vue and ajax AJAX, namely "Asynchronous Javascript And XML" (Asynchronous Javascript And XML), refers to a web page development technology for creating interactive web applications. Basic usage of ajax Vue itself does not support sending AJAX requests. It needs to be implemented with jquery, vue-resource s ...

Unlike Vue, React's settings are asynchronous. 13. setState is an asynchronous behavior setState() This is an asynchronous operation, such as: class HelloWord extends React.Component { constructor(props) { super(props); this.state = { count: 0 } this.clickCountAsync = this.clickCountAsy ...

This paper mainly introduces the realization of VUE2.0 image upload function. The principle is to achieve this effect through js control and input tag, without loading other components. The results are as follows: 1.DOM code 1.1 input tag Because we upload pictures by input tag, but the style of input tag is ugly, so ...

Let's start with a simple German example target.png A simple application with buttons and a counter.Pressing the button increments the counter.While this is easy to achieve, the goal is to understand the basic concepts. problem.dot.png Suppose you have two components in your application: 1. A button (the source of ...

background Refactoring - Improves the design of existing code so that software can be more easily understood and modified. Book back Source Parsing for Token Pass-through within Spring Security OAuth Micro-Service In this article, there is no token call process, the code is constantly improving and its refactoring process. The requirements are ...

computed Do not use computed Simple string splicing import Vue from 'vue' new Vue({ el: '#root', template: ` <div> <span>Name: {{firstName + ' ' + lastName}}</span> </div> `, data: { firstName: 'Jokcy', lastName: 'Lou' } }) Using computed new Vue({ el: '#ro ...

Today I went on to write the last one. Yesterday I was so tired this week that I rushed to work overtime every day. At 12 o'clock yesterday, my neck began to ache. Okay, no nonsense. It's time to start inherit Inheritance: Subclasses inherit attributes and methods in parent classes, which do not require implementation in subclasses Types of i ...

Preface: The hook is like dividing a person's birth to death into stages. You must name at birth, not at the stage of adulthood or death. Or if you want to make an appointment at birth, you can't. The same is true of components, whose internal structure is different at each stage. So a specific hook can do something specific, s ...

Preface 1. Mainly return is the default browser return event is to return to the previous page. 2. Processing all kinds of pop-ups on the page, clicking on physical return should hide these pop-ups instead of returning directly to the page. 3. To sum up the problems, h5 should hope to monitor the return events and do some p ...