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1, IntroductionSocial media websites are popular. People often use comments to express their views. The comment function has become a part of the website.2, Knowledge points2.1 media objectsOfficial explanation: This is an abstract style used to build different types of components with images aligned to the left or right of the text content (su ...

zustand It is a very fashionable state management library and the fastest growing React state management library of Star in 2021. Its concept is very functional, and the API design is very elegant, which is worth learning.summaryFirst introduce zustand How to use.Create storeCreate a store through the create function. The callback can get the g ...

catalogue Function definition and call Strict mode What is strict mode Turn on strict mode Changes in strict mode Higher order function closure regular expression ES6 new syntax Built in object extensions for ES6 Extension method of Array Extension method of String Set data structure Function definition and call Functions can b ...

1, Introduction to homology strategy The same origin policy is a security function of the browser. Client scripts from different sources cannot read or write to each other's resources without explicit authorization. Homology policy is the cornerstone of browser security. What is the source The source [origin] is the protocol, domain name and ...

list When you don't need to find or sort elements in a long sequence. Abstract data type definition of list A list is an ordered set of data. (whether the data itself is in order or the index is in order) Each data item in the list is called an element. Any data type can be in the list. The number of elements in the list is limited by the pr ...

1. General Locke's law tells us: When our goal is so great that we can't see the end, there will be a great chance to give up. Just like running a marathon, because of the long time and long distance, many players will choose to give up halfway. In fact, a good way is to split the big goal into many small goals. These small goals can see the en ...

1.Vue-Cli 1.1 introduction to Vue cli A scaffold officially provided by vue cli is used to quickly generate a vue project template; The pre-defined directory structure and basic code are just like when we create Maven project, we can choose to create a skeleton project, which is the scaffold, and our development is faster; Main func ...

1. Strong type inspectionReplace with = = ===// If not handled properly, it will greatly affect the program logic. It's like, you want to go left, but for some reason, you go right 0 == false // true 0 === false // false 2 == "2" // true 2 === "2" // false// example const value = "500"; if (value === 500) { console.log(value); // If the conditi ...

Modularization cannot be used directly in browsers. Although Es Module is now supported, further conversion is needed. webpack can package our modules into bundle files to provide the syntax that the browser can recognize. add.js file exports.default = (a, b) => a + b; index.js file const add = require('add.js').default; console.log(a ...

DOM (document object model), a standard programming interface recommended by W3C organization to deal with extensible markup language (HTML/XML). The content, structure and style of web pages can be changed through DOM interface For JavaScript, in order to enable JavaScript to operate HTML,JavaScript has its own dom programming interface. F ...