Programmer Think

Preface: the use of slots is actually very simple. You only need to understand two points: 1. Slots are used in sub assemblies. 2. Slots are used to display the template data of child components in the parent component normally vue2. Slot for 0 Without much to say, let's go directly to the case: <div id="app"> <div class="fa ...

Recently, two different methods have been used to realize instant messaging: one is polling based on timer (cooperating with the back-end within the project), and the other is two-way communication based on websocket (integrating and cooperating with the third party). Next, the basic use, advantages and disadvantages of these two different inst ...

WPS or other forms and document processing are often used in learning and work. In particular, some formulas or calculations are often used in tables to process data. It is OK to simply take the maximum or minimum, but it is troublesome if too much data is involved or cyclic processing is required. For example, I want to get an accumulated val ...

For front-end beginners, exports and module Exports, export and export default are easy to misunderstand. The author writes an article to interpret them. Part I: exports and module exports To make node JS files can call each other, node JS provides a simple module system. The module is node The basic components of JS application, files and ...

Fast reading 1, reduce Definition Examples 2, Array accumulation 3, Flexible use 4, Array de duplication   1, reduce Definition reduce is an aggregation method, which can turn each item in the array into one item by superposition. Examples var arr = [1, 2, 3, 4, 5]; arr.reduce(function(prev, cur, index) { console.log(prev); ...

ES6 (xxx) Decorator, core-decorators.js, Mixin, Trait [note] the Decorator proposal has been greatly revised and has not been finalized yet. I wonder if the grammar will change again. The following content is completely based on previous proposals and is a little outdated. After waiting for finalization, it needs to be completely rewritten ...

analysis: ① : initialize todo project ② : create 3 components and internal code ③ : prepare the style file of styles ④: App.vue is introduced for registration. The outermost container class name is todoapp Prepare in advance: prepare the style file of styles (copy it from the preview materials) in app Vue introduction and use (there is a link ...

1.join() (array to string) Array to string, the method only receives one parameter: the default comma separator (). <script> var arr=[ 1, 2, 3, 4]; c ...

I. Introduction This article is an introduction to the principles of V8 compilation, which aims to give you a perceptual understanding of the parsing process of JavaScript in V8. The main writing process of this paper is as follows: Interpreter and compiler: introduction to basic knowledge of computer Compilation PrincipleV8 compilation pri ...

IntroductionJavaScript WebGL Basics After some optimization, we try to draw common two-dimensional faces.The geometry in WebGL is ultimately composed of triangles, which is more suitable for cutting in.OriginMy GitHubDraw triangleThis is Example , based on Draw a line The main changes are:vertexDrawing elementsvertexA triangle has three vertice ...