Programmer Group

1. Overview From the first for-loop traversal method to the endless variety of traversal methods that have emerged since then, the biggest difference is the difference in the application scenario. The most important thing we need to remember is which method is appropriate under what circumstances. 2. Analysis Here is a pile of potatoes. If ...

preface This paper describes several array traversal methods commonly used in JS and performance analysis and comparison. If this article helps you, ❤️ Follow + like ❤️ Encourage the author, the official account and the first time to get the latest articles. Array method JavaScript has provided many array methods up to now. The following figur ...

What is SQL injection The first is the security vulnerability in the database layer of the Web program, which is the simplest vulnerability in the website.The main reason is that the program does not judge the legitimacy of the user input data, so that the attacker can add additional SQL statements to the pre-defined SQL statements in the Web ...

Source location: vue-next/packages/compile-core/src/transforms/vOn.ts vue-next/packages/compile-core/src/transforms/vBind.ts Here, the transform module has been basically implemented, but it needs to deal with v-on and v-bind. Take this as a simple example to see what instruction compilation will do Explain directiveTransforms is also a ki ...

  catalogue @Class of NgModule() decorator Common system modules of Angular 1. Example - create and import feature modules order.module.ts list.component.ts app.module.ts app.component.html 2. Example - inert loading module order.module order-routing.module Configure in the top-level routing AppRoutingModule app.component.html im ...

Source location: vue-next/packages/compile-core/src/compile.ts The last is the main entrance of the whole module. Just integrate the previous modules Write it down The code is given directly here, but I will elaborate more // Plug in preset function getBaseTransformPreset() { return [ [transformElement, transformText], { o ...

preface:Recently, I began to read teacher Ruan Yifeng's introduction to ECMAScript 6 (hereinafter referred to as the original text), learn the knowledge of ECMAScript 6 (hereinafter referred to as ES6), sort out some knowledge points and my understanding to make article notes. According to the chapter as a unit, a chapter is a note.The article ...

The server CentOS 7.5 64 bit Install FinalShell software Connect server gitlab deployment Reference website: https://www.cnblogs.com/LUA123/p/9675191.html First check the dependency: sshd [root@localhost soft]# rpm -qa|grep openssh-server openssh-server-7.4p1-11.el7.x86_64 [root@localhost soft]# ps -e|grep sshd 1107 ? 00:00:00 s ...

New prototype methodArray.prototype.copyWithinFunction type:/** * @author: forceddd * @desc: Shallow copy the elements in the array from the start position to the end position (excluding the elements at end), and overwrite the array from the target. Finally, the modified array is returned * @param {number} target Copy to the starting overwrite ...

1. Introduction to jquery jQuery is an excellent JavaScript library that enables more functionality with minimal code characteristic: 1. Powerful selector function  $ ("selector") 2. Introduction to grammar  $ ("selector").action() 3. Implicit iteration  $ ("div").click();   // Five div will ...