Maple Forest Fantasy

Maple Rain 2 years ago JavaScript

Js prototype

The code is as follows: class Person{ constructor(name) { this.name = name } hello() { console.log('hello') } } class Student extends Person { constructor(name, score) { super(name) this.score = score } introduce() { Console. log (` I am ${this. name} and got ${this. score}. `) } } const...

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Aliases and redirects of routes in Vue

Maple Rain 2 years ago Vue

Aliases and redirects of routes in Vue

import Vue from 'vue' import VueRouter from 'vue-router' //The third-party library needs to be used for a while Vue.use(VueRouter) //Reference page import About from './ about.vue' import Home from './ home.vue' import Info from './ info.vue' //Define the collection and array type of routes const routes = [ //A single route is an object type. Path represents the path, and component represents the component { path: '/about', compon...

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The pointing of this in js

Maple Rain 2 years ago JavaScript

The pointing of this in js

Recently, I saw the code of js. When I encountered this problem, I was dazzled and confused. Looking for information everywhere on the Internet, I finally understood it. Without saying much, there are the following codes: window.val=1; var obj = { val:2, db1:function(){ val *= 2; this.val *= 2; console.log(val); console.log(this.val); } }; obj.db1(); // 2 4 var func = obj.db1; func(); //It can be regarded as window. func() // 8...

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Js variable type conversion

Maple Rain 2 years ago JavaScript

Js variable type conversion

Js variable type conversion 1. js variable operation//When adding a string and a number, the number is converted to a string, and then concatenated 1 + 2 +3 // 6 1 + 2 + '3' // '33' '1' + 2 + 3 // '123' true + '10' // 'true10' //However, the subtraction, multiplication and division calculation will automatically convert its string to a number for calculation 4 - '2' // 2 4 / '2' // 2 4 * '2' // 8 //Therefore, when the front end receives the results from the back end, it must remember to convert them to digital types when performing addition calculation to avoid unexpected problems 4+parseInt ('2 ')//62. Double==//About the symbol of==

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Error reporting of enabling eslint in vue ts

Maple Rain 2 years ago Vue

Error reporting of enabling eslint in vue ts

1. To solve the double quotation mark error reporting problem, create the file. prettierc.json in the project root directory, and add the following content{ "singleQuote": true }Then, use the format shortcut key shif+alt+f of vscode to format the error file and change the double quotation marks in the file to single quotation marks. 2. The problem of reporting Missing space before function parents means that there needs to be a space between the method name and the scratch mark. The solution is to add the following code in the rules field of the. eslintrc.js file in the project root directory to "space before function part": 03. error Extra s

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Maple Forest Fantasy

Js prototype

Aliases and redirects of routes in Vue

The pointing of this in js

Js variable type conversion

Error reporting of enabling eslint in vue ts

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Js prototype

Aliases and redirects of routes in Vue

The pointing of this in js

Js variable type conversion

Error reporting of enabling eslint in vue ts

Recent comments

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