Programmer Think

v-text v-cloak V-text is equivalent to {}} for displaying content, but the difference is that {}} will cause flashing problems, and v-text will not flash If you want to use {}} without flickering, use v-cloak. The steps are as follows: Act on the v-cloak command on the template entry node managed by Vue Add a CSS hidden style of attribute ...

1, Design project structure Because we implement todo as a functional component, the basic design idea is: 1. Create a todo folder in components and a new index JSX is a todo component. This folder contains some todo widgets 2. On app Import todo from 'is introduced into JSX/ Components / todo 'and render in render: import Rea ...

webStorage Basic concepts webStorage provides two storage methods, localStorage and sessionStorage. localStorage is a persistent storage, and the stored content will exist permanently if it is not deleted actively sessionStorage is session level storage. Close the browser and destroy it The specific difference is After closing the web page a ...

1. JavaScript anti crawler principle and reason Crawler and website security, one is spear, the other is shield. Is your website safe? First, check whether the safety measures are in place,Second, it also depends on whether the data value will attract the attention of "crawlers". In other words, unless no crawler is staring at your ...

Process abstraction Process abstraction Used to handle local detail controlProcess abstraction is the basis of function thought In the process of imagination abstraction, it can be abstracted into a room, the door and window in the room, and then the room space itself is data, but the action and behavior of opening the door or window ...

Js data type Basic data types (value types): Number, String, Boolean, Undefined, Null, Symbol (unique value added in es6) and BigInt (added in es10); Reference data type: Object. Contains Object, Array, function, Date, RegExp. Deep copy Only when the copy refers to the data type, the copy can be divided into shallow copy and deep copy ...

1, Basic elements 1,Entry/Output 1.1. Single entry configuration module.exports = { entry: './src/index.js', // Packaged entry file output: './dist/main.js', // Packaged output }; 1.2. Multi entry configuration const path = require('path'); module.exports = { entry: { app: './src/app.js', admin: './src/admin.js', }, out ...

[will change the original array] 1. Array.push(), adds one or more elements to the end of the array and returns the new array length. Original array change let arr = [1,2,3,4] arr.push(5,6,7) console.log(arr) // [1, 2, 3, 4, 5, 6, 7] 2. Array.pop(), delete and return the last element of the array, if the array is empty Ze returns undefind. ...

Previous review In the first article, we gave a brief introduction to angular, mainly to understand angular and how to create an angular project and start it. Because it is not a video, we don't explain too much about the previous article. If you don't read it, you can directly move to the first article! This article mainly combs and un ...

Object advanced Object creation mode Object constructor mode First create an empty Object object, and then dynamically add properties / methods var p = new Object() p = {} p.name = 'Tom' p.age = 12 p.setName = function (name) { this.name = name } console.log(p.name, p.age) p.setName('Bob') console.log(p.name, p.ag ...