search
HomeWeb Front-endJS TutorialIntroduction to the configuration of using Typescript in Vue2 Vue-cli

This article mainly introduces the configuration introduction of using Typescript in Vue2 Vue-cli. It has a certain reference value. Now I share it with you. Friends in need can refer to it.

Vue is the three major front-end One of the frameworks has received 44,873 stars on github so far, which is enough to show that it has quietly become mainstream. The following article mainly introduces you to the relevant information about the configuration of using Typescript in Vue2 Vue-cli. Friends in need can refer to it.

Preface

Because the company's team is keen on the vue framework recently, and I want to practice typescript in the new project, so I started to work on vue ts The road to pitfalls... This article is intended to save time for friends who have the same idea as me. I won’t say much below. Let’s take a look at the configuration required to use Typescript in Vue2 Vue-cli. .

1. Preliminary configuration

First install the official plug-ins vue-class-component, vue-property-decorator, and configure webpack.
The webpack configuration is as follows:

Modify the entry file

entry: {
 app: './src/main.ts'
}

resolve part:

extensions: ['.js', '.vue', '.json', '.ts', '.tsx']

Configure loader

{
 test: /\.tsx?$/,
 loader: 'ts-loader',
 exclude: /node_modules/,
 options: {
  appendTsSuffixTo: [/\.vue$/],
 }
 }

Configure tsconfig.json

{
 "include": [
 "src/**/*"
 ],
 "exclude": [
 "node_modules"
 ],
 "compilerOptions": {
 "allowSyntheticDefaultImports": true,
 "experimentalDecorators": true,
 "allowJs": true,
 "module": "es2015",
 "target": "es5",
 "moduleResolution": "node",
 "experimentalDecorators": true,
 "isolatedModules": true,
 "lib": [
  "dom",
  "es5",
  "es2015.promise"
 ],
 "sourceMap": true,
 "pretty": true
 }
}

2. Actual combat!

# Configuring the configuration is only the first step, running it in the project is the key.

Add lang='ts'

# in the script tag of the vue file because ts-loader does not know it like webpack that has been equipped with loader What are vue, html and other files? When you run it, you will get an error that the module cannot be parsed, so you also need to configure the .d.ts declaration file


The following configuration of vue

declare module "*.vue" {
 import Vue from 'vue';
 export default Vue;
}

You can also configure .d.ts files for other non-js modules such as html (tell ts-loader to understand html as a string)

declare module "*.html" {
 let template: string;
 export default template;
}

After configuration, ts will be able to understand these modules


Introduce the modules that need to be used from vue-property-decorator


(Generally, only Component, Vue, Watch, and Prop are used. The other three are not used or studied. Someone who knows can explain it.)


import { Component, Vue, Watch } from 'vue-property-decorator'

Let’s take the previously written sidbar code as an example:

class HoverTopElem {
 leaveTop: number = -200
 top: number = null
 height: number = null

 show(e) {
 this.top = e.target.getBoundingClientRect().top
 this.height = e.target.clientHeight
 }
 hidden() {
 this.top = this.leaveTop
 }
}

@Component({
 name: 'sidebar',
 template: template,
 components: {
 sidebarItem
 }
})
export default class Sidebar extends Vue {
 SidebarMenu: any = SidebarMenu
 hoverTopElem: HoverTopElem = new HoverTopElem()
 activeListItemName: string = null
 activeRouteItemRoute: string = null

 get _activeRouteItemRoute(): string {
 return this.$route.path
 }

 @Watch('_activeRouteItemRoute', { immediate: true })
 onRouteChanged(val: any) {
 this.activeRouteItemRoute = val
 }

 changeList(param) {
 this.activeListItemName = param
 }

 changeRoute(param) {
 this.activeRouteItemRoute = param
 }
}

Metadata is written in the @Component configuration, such as name, components used, etc. Then let’s talk about how to use each instance attribute method used in vue before:

data: This is the most commonly used, like the SidebarMenu above (a total of 4 are declared here). Note that the variables declared here must be assigned a value. If not, it will be null, not undefined, otherwise the data will not be responsive. Therefore, the properties in the HoverTopElem class must also have initial values, otherwise these properties will not be responsive.

computed: Here is the get function. Note that tsconfig.jsonp is not configured with "target": "es5" and an error will be reported here

prop: There is a Prop module in vue-property-decorator. You can also declare this prop in the metadata, and then declare this variable in the class. I personally recommend the first one

watch: Watch module in vue-property-decorator

methods: Just write the method directly in the class like data (be careful not to have the same name as the cycle hook)


Various life cycles Hook: Just write it directly


See the vue-class-component document for routing hook

At this point, you can basically write the vue component as before.

Of course, if you want to write ts as before, you also need to configure tslint, otherwise some ts syntax will not be recognized, such as public modifiers, etc., because I am not very proficient in ts, so I don’t think about configuring it. Interested friends can try it.

The above is the entire content of this article. I hope it will be helpful to everyone's study. For more related content, please pay attention to the PHP Chinese website!

Related recommendations:

How to solve the problem of incorrect access path after Vue background image is packaged

Based on casperjs and resemble .js implements a pixel comparison service

Introduction to initializing the stylus installation method for the first time after the vue project is created

The above is the detailed content of Introduction to the configuration of using Typescript in Vue2 Vue-cli. For more information, please follow other related articles on the PHP Chinese website!

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Vue常见面试题汇总(附答案解析)Vue常见面试题汇总(附答案解析)Apr 08, 2021 pm 07:54 PM

本篇文章给大家分享一些Vue面试题(附答案解析)。有一定的参考价值,有需要的朋友可以参考一下,希望对大家有所帮助。

5 款适合国内使用的 Vue 移动端 UI 组件库5 款适合国内使用的 Vue 移动端 UI 组件库May 05, 2022 pm 09:11 PM

本篇文章给大家分享5 款适合国内使用的 Vue 移动端 UI 组件库,希望对大家有所帮助!

vue中props可以传递函数吗vue中props可以传递函数吗Jun 16, 2022 am 10:39 AM

vue中props可以传递函数;vue中可以将字符串、数组、数字和对象作为props传递,props主要用于组件的传值,目的为了接收外面传过来的数据,语法为“export default {methods: {myFunction() {// ...}}};”。

手把手带你利用vue3.x绘制流程图手把手带你利用vue3.x绘制流程图Jun 08, 2022 am 11:57 AM

利用vue3.x怎么绘制流程图?下面本篇文章给大家分享基于 vue3.x 的流程图绘制方法,希望对大家有所帮助!

聊聊vue指令中的修饰符,常用事件修饰符总结聊聊vue指令中的修饰符,常用事件修饰符总结May 09, 2022 am 11:07 AM

本篇文章带大家聊聊vue指令中的修饰符,对比一下vue中的指令修饰符和dom事件中的event对象,介绍一下常用的事件修饰符,希望对大家有所帮助!

如何覆盖组件库样式?React和Vue项目的解决方法浅析如何覆盖组件库样式?React和Vue项目的解决方法浅析May 16, 2022 am 11:15 AM

如何覆盖组件库样式?下面本篇文章给大家介绍一下React和Vue项目中优雅地覆盖组件库样式的方法,希望对大家有所帮助!

通过9个Vue3 组件库,看看聊前端的流行趋势!通过9个Vue3 组件库,看看聊前端的流行趋势!May 07, 2022 am 11:31 AM

本篇文章给大家分享9个开源的 Vue3 组件库,通过它们聊聊发现的前端的流行趋势,希望对大家有所帮助!

react与vue的虚拟dom有什么区别react与vue的虚拟dom有什么区别Apr 22, 2022 am 11:11 AM

react与vue的虚拟dom没有区别;react和vue的虚拟dom都是用js对象来模拟真实DOM,用虚拟DOM的diff来最小化更新真实DOM,可以减小不必要的性能损耗,按颗粒度分为不同的类型比较同层级dom节点,进行增、删、移的操作。

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
4 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
4 weeks agoBy尊渡假赌尊渡假赌尊渡假赌

Hot Tools

PhpStorm Mac version

PhpStorm Mac version

The latest (2018.2.1) professional PHP integrated development tool

Safe Exam Browser

Safe Exam Browser

Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.

SublimeText3 English version

SublimeText3 English version

Recommended: Win version, supports code prompts!

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)