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Array method The following methods will traverse each item in the array and perform related operations; forEach: cannot be terminated some: can be terminated by return true Filter: can filter findIndex: the index of the corresponding object can be found Delete / add array elements after index: Splice (index, howmany, i ...

This article is for reference only:Bili Bili video capture The video capture of station b is still relatively difficult. Compared with the video capture of other websites, it is also relatively difficult because of my curiosity and fear of death. I intend to analyze and analyze the video of station b. t ...

Note: due to the large number of codes designed in this case, it is divided into two parts to upload. This article is the first part. 1. Preparation 1.1 database # Create category table , Primary key, primary table(1surface) CREATE TABLE t_category( cid INT PRIMARY KEY AUTO_INCREMENT, cname VARC ...

webpack summary 1. It's hard to avoid cross domain problems in front and back platform separation projects, which can be configured in devServer of webpack devServer:{ proxy:{ "/api":{ target:"https://****. com "/ / address of data interface changeOrigin:true, // Cross domain allowe ...

/* Use components: <pagination></pagination> The properties passed in the component are: 1. total: how many pieces of data are there: required parameters 2. prepage: how many optional parameters are displayed on one page. The default value is 2 3. Show page: how many optional parameters are displayed for the numbe ...

Vue learning notes 1. MVVM mode and the first Vue program Learning course of java according to ecstasy What is MVC? MVC mode represents model view controller mode. This pattern is used for hierarchical development of applications. Model - a model represents an object or JAVA POJO that accesses d ...

Use steps of Vue router 1. Introduction <script src="./vue-router.js"></script> 2. Install the plug-in (Vue. Use (plug-in object); / / some global components will be registered and properties will be attached to the VM or component object during the process.) Vue.use(Router) 3. Create ro ...

vue component classification I. Introduction The reason why I wrote this article is that I interviewed dozens of people as an interviewer some time ago. One of the questions is "what are the component classifications of vue? ", it's surprising that most people only answer global components ...

Write before: The package name of the Vue command line tool has changed from vue-cli to @vue/cli, @vue/cli is version 3.x of vue, and the maximum version of vue-cli is currently only @2.9.6.If you have previously installed vue-cli globally on your computer, you need to uninstall it first by executing NPM uninstall vue-cli ...

Article directory 1, introduction 2. Assign permissions 2.1 pop up the assign permission dialog box and request permission data 2.2 initial configuration and use of El tree tree control 2.3 optimize the display effect of tree control 2.4 analyze the implementation idea of default checking of existin ...