JavaScript

1, can return the character of the specified positionStringobject.charat (index);2, returns the encoding of the character at the specified positionStringobject.charcodeat (index);3, used to concatenate two or more strings, return new string does not

Basic concept one, syntax one) case-sensitive (two) identifiersWriting rules with JavaIII) NotesSlightlyFour) Strict mode1. Enable strict mode throughout the script: add at the top"Use Strict"2. Specify that the function executes in strict

Today in the Learning JS when the problem is more easily confused, so I drew a simple diagram, and with the JS console inside the output test, easy to understand.1. In Document Object：scrollwidth/height: Gets the scrolling width of the object ( the

1. String conversion toString (): You can convert any type of data to a stringvar num= 19; 19var mystr = num.tostring (); "19"var mystr = String (num); "19"var mystr = "" + num; "192, String split split (","): divides the string into bits multiple

JavaScript Strict mode: run under strict conditionsHow to: Add ' use strict ' command browser support at top of JavaScript (Internet Explore + +, Firefox 4+, Chrome 13+, Safari 5.1+, Opera 12+)What are the benefits of strict mode?1, improve the

- , ObjectsProperties: Describes an object's information method: Describes the behavior of an object encapsulation: only care about input and output (regardless of how the process is implemented)ü Categories of objects:Built-in objects (native

Closures (closure) are a difficult and unique feature of the JavaScript language, and many advanced applications rely on closures.Here is my study note, which should be useful for JavaScript beginners.The scope of a variableTo understand closures,

Small program version flop games, small program flop games The examples in this article share with you the code of a small program flop game for your reference. The details are as follows: 1. Create a quick start Project and check the

Floating introduction and positioning considerations, floating introduction and positioning On October 24, lunar January, I wrote for a while and it was snowing outside. I smoke in the house and work hard. How easy is the adult world, when you are

Vue watch automatically detects data changes in real-time rendering method, vuewatch This article describes how vue watch automatically detects data changes in real-time rendering: First, make sure that watch is an object and must be used as an

Angular asynchronously loads node data with zTree, and angularztree 1. Prerequisites 1.1 create an angular4 Project Reference: http://www.bkjia.com/article/119668.htm 1.2 Go To The zTree official website to download zTree ZTree Official Website:

Summary of the javascript array method, javascript Array In the development process, we always encounter common problems, such as flattening a two-dimensional array into a one-dimensional array or a three-dimensional array into a one-dimensional

Vue-based ajax public method (detailed description) and vueajax In order to reduce code redundancy, we decided to extract the public method for requesting ajax for colleagues' use. I used ES6 syntax and wrote this method. /*** @ Param type: Request

Detailed explanation of the solution that fails the small program review, detailed explanation of the small program Preface Recently, applets have been active in developers' eyes. Many developers are involved in the development of small programs,

Talking about the event dispatching mechanism between Vue2.0 parent and child components, and vue2.0 Dispatching From vue1.x, we all know that in vue2.0, $ dispatch and $ broadcase for event communication between parent and child components are

Introduction to vue-ssr-based server rendering and vue-ssr ServerPart 1 Basic Introduction1. Preface Server-side Rendering Principle mechanism: parse and render data on the server side, and generate html fragments directly and return them to the

Webpack vue project package generated files, resource files report 404 troubleshooting (Summary), webpackvue Recently, when using webpack + vue for personal entertainment projects, we found that after npm run build, the path of css js img static

Vue-cli webpack introduces jquery method, webpackjquery After an afternoon's effort, I finally introduced jquery to the project generated by vue-cli and recorded it. (Webpack for Template) Add "jquery": "^ 2.2.3" to dependencies in package. json,

Simple sample code of Vue SSR and vuessrPreface Recently, I took over an old project, a typical Vue componentized front-end rendering, and subsequent business optimization may move towards SSR. Therefore, I need to make some technical reserves first.

HTML and html annotations When writing code, the code may be described. Of course, this description is not for the browser, but for developers to read. The browser does not display comments or affect the webpage structure. Annotation structure: