Programmer Group

The author is an ordinary programmer who can no longer be ordinary. Based on his interest in provenance, he took the time to study and want to realize the floating window voice recognition function of mobile phone, which does not affect his other operations. The voice recognition technology uses Baidu cloud voice sdk, which should not be diffic ...

Advanced react component Introduction to component communication A component is an independent and closed unit. By default, only the component's own data can be used. In the process of componentization, we split a complete function into multiple components to better complete the functions of the whole application. In this process, it is i ...

Non single file component: a file contains n components   1, Components   Definition of component -- a collection of local function codes and resources in an application Components: Understanding: code set used to achieve local (specific) functional effects (html/css/js...)Why: the functions of an interface are complexFunction: ...

1. Slot 1. Default slot Components that encapsulate slots <ul> <li>{{ title }}</li> <slot></slot> </ul> Implementer of slot <Com title="game"> <ul> <li>Zhang San</li> <li>Li Si</li> <li>Wang Wu</li> ...

z case: Web carousel map Also known as focus map Functional requirements: When the mouse passes through the rotation chart module, the left and right buttons are displayed and the left and right buttons are hidden Click the button on the right once, and the picture will be played to the left once, and so on. The same is true for the left butto ...

(1) . function parameter default value Initialization parameter. If it is not set, the default value of the parameter is undefined function test(a, b){ console.log(a); console.log(b); } test(1); // 1 // undefined Do not pass arguments, set default values for row parameters Only es6 supports formal parameter assignment function test(a ...

Hook rule Use Hook only at the top Do not call Hook in loops, conditions, or nested functions to ensure that they are always invoked at the top level of your React function. By following this rule, you can ensure that hooks are called in the same order in each rendering. This allows react to maintain the correct hook state between multipl ...

target Objective 1: be able to name three common paradigms of database design Goal 2: be able to use PD tools for table structure design Objective 3: complete the business development of discipline module Objective 4: complete the business development of the directory module Objective 5: complete the business development of the topic ...

Once there is order in js, you have to use an array ([]) to store it Everyone in the array is an object ({}) Everyone must have a unique ID Vue.config.productionTip = false const vm = new Vue({ el: '#root', data(){ return{ persons: [ {id: '001',name:'Zhang San',age: 18}, {id: '002',n ...

1. Layout design effect of left menu   2. Left Menu Layout Analysis Menus are split into two levels and have a folding effect   3. Introduction to menu components used   Menu | Element Plus (gitee.io)   el-menu   The outermost layer of the entire left menu must be wrapped in a menu  el-submenu Level 1 Menu ...