2021-10-21 deep JavaScript advanced syntax

*Note: This article is to learn the course notes of in-depth JavaScript Advanced Grammar codewhy new course. It is recommended to find the teacher's course in Tencent class for learning. 1,GO AO VO 1.1. The VO in the function is called AO, and the global VO is called GO (earlier, ES5 was not included before ES5): variables and functions de ...

Added by vinoindiamca on Tue, 18 Jan 2022 15:02:41 +0200

Responsibility chain model of js design pattern

I Initial responsibility chain model Definition: multiple objects have the opportunity to process the request, so as to avoid the relationship between the sender and receiver of the request. Connect the object into a chain and pass the request along a chain until an object processes it. It may be a little obscure. Let's take a look at an exam ...

Added by radley on Tue, 18 Jan 2022 12:47:42 +0200

Node.js learning 5 (events)

1, Node JS event loop        Node.js is a single process and single thread application, but because of the asynchronous execution callback interface provided by V8 engine, a large number of concurrency can be handled through these interfaces, so the performance is very high.     &nbs ...

Added by aufkes on Tue, 18 Jan 2022 12:36:18 +0200

New features of CSS3 (III) 2D conversion

catalogue 1.1 two dimensional coordinate system 1.2 movement of 2D conversion 1. Syntax: 2 . a key: 3. Center a box horizontally and vertically 1.3 rotation of 2D conversion 1. Syntax: 2. Key points: 3. Rotate the case and write the triangle with code: 1.4 transform origin of 2D conversion center point 1. Syntax: 2. Key points: 3. ...

Added by dekeb55 on Tue, 18 Jan 2022 11:44:47 +0200

JavaScript - Foundation timer, callback function, countdown

Two timers provided by window setTimeout()setInterval() window. SetTimeout (calling function, [number of milliseconds delayed]); The setTimeout() method is used to set a timer. When the delay time is up, the calling function will be executed, and it will end only once. <script> //The delay time is in milliseconds ...

Added by mikusan on Tue, 18 Jan 2022 10:48:21 +0200

Development tool - postman

catalogue 1 simple introduction 1.1 creating collections 1.2 create request 1.3 set assertion 1.4 assembly test 1.5 export * json script 1.6 collection and sharing 1.7 authority management 2 second order use 2.1 setting environment variables 2.1.1 new environment 2.1.2 setting environment variables 2.1.3 setting environment variable ...

Added by bostonmacosx on Tue, 18 Jan 2022 10:21:28 +0200

JavaScript -- string type

String extraction method slice() substr() substring() Function: returns a substring of the corresponding string, and both receive one or two parameters. Difference: for slice() and substituting(), the first parameter represents the starting position of the substring, the second parameter represents the ending position of the substring extract ...

Added by newbie5050 on Tue, 18 Jan 2022 09:56:06 +0200

Authority management in front end and back end separation

In the traditional front and back-end development, permission management is mainly carried out through filters or interceptors (the permission management framework itself also realizes the function through filters). If users do not have a role or a permission, they cannot access a page. However, in the separation of front and back ends, the pa ...

Added by jamesp on Tue, 18 Jan 2022 09:21:47 +0200

TypeScript advanced types and usage

This article introduces the usage scenarios of advanced TypeScript types in detail, which can provide some help for the daily use of TypeScript. preface This article has been included in Github: https://github.com/beichensky/Blog In the middle, pass by and point a Star 1, Advanced type & cross type Cross type is to combine multiple typ ...

Added by colmtourque on Tue, 18 Jan 2022 08:29:03 +0200

JavaScript Volume I you don't know - in-depth understanding

catalogue Part I: scope and closure Chapter 1. What is the scope Chapter 2} lexical scope Chapter 3 function scope and block scope Chapter 4 - lifting Chapter 5: scope closure The second part is} this and object model Chapter 1} about this Chapter 2} this comprehensive analysis Chapter 3: object Chapter 4} mixed object "class&qu ...

Added by scratchwax2003 on Tue, 18 Jan 2022 05:50:16 +0200