How to define global variables and global methods in vue? (code)
This article introduces to you how to define global variables and global methods in vue? (code), it has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.
1. Global import file
1. First define the common component common.vue
<script type="text/javascript">
// 定义一些公共的属性和方法
const httpUrl = 'http://39.105.17.99:8080/'
function commonFun() {
console.log("公共方法")
}
// 暴露出这些属性和方法
export default {
httpUrl,
commonFun
}
</script>2. Import it where you need to use it
<script>
// 导入共用组件
import global from './common.vue'
export default {
data () {
return {
username: '',
password: '',
// 赋值使用
globalHttpUrl: global.httpUrl
}
},3. Use
<template>
{{globalHttpUrl}}
</template>2. Introduce global variables and methods into main.js
1. Define shared components as above
2. Introduce them into main.js and copy them to vue
// 导入共用组件 import global from './common.vue' Vue.prototype.COMMON = global
3. Use
export default {
data () {
return {
username: '',
password: '',
// 赋值使用, 可以使用this变量来访问
globalHttpUrl: this.COMMON.httpUrl
}
}, to summarize the example
common.vue file, the public in the project, or the global file
vue-resource needs to be first Configure main.js
// 配置使用formDate Vue.http.options.emulateHTTP = true Vue.http.options.emulateJSON = true
<script type="text/javascript">
// 定义一些公共的属性和方法
const httpUrl = 'http://39.105.17.99:8080/'
function promiseFun (url, params) {
return new Promise((resolve, reject) => {
this.$http.post(this.globalHttpUrl + url, params).then(
(res) => {
resolve(res.json())
},
(err) => {
reject(err.json())
}
)
})
}
// 暴露出这些属性和方法
export default {
httpUrl,
promiseFun
}
</script>Use
export default {
data () {
return {
username: '',
password: '',
globalHttpUrl: global.httpUrl,
promiseFun: global.promiseFun
}
},
methods: {
loginInFun () {
localStorage.setItem('userId', '00001')
let params = {
telphone: this.username,
password: this.password
}
this.promiseFun('itArtison/user/login', params).then(
(res) => {
console.log(res)
this.$Message.info(res.message)
// 登录成功过以后，这里从初session
// 先将对象转换为json字符串
localStorage.setItem('userInfo', JSON.stringify(res.data))
if (res.code === '0000') {
this.$router.push({'name': 'Home'})
}
},
(err) => {
console.log(err)
this.$Message.info(err.message)
}
)
}
} Recommended related articles:
Detailed explanation of global variables and global functions defined in the vue project
About Detailed explanation of several methods of defining global variables in VUE
The above is the detailed content of How to define global variables and global methods in vue? (code). For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
In-depth discussion of how vite parses .env files
Jan 24, 2023 am 05:30 AM
When using the Vue framework to develop front-end projects, we will deploy multiple environments when deploying. Often the interface domain names called by development, testing and online environments are different. How can we make the distinction? That is using environment variables and patterns.
Detailed graphic explanation of how to integrate the Ace code editor in a Vue project
Apr 24, 2023 am 10:52 AM
Ace is an embeddable code editor written in JavaScript. It matches the functionality and performance of native editors like Sublime, Vim, and TextMate. It can be easily embedded into any web page and JavaScript application. Ace is maintained as the main editor for the Cloud9 IDE and is the successor to the Mozilla Skywriter (Bespin) project.
Explore how to write unit tests in Vue3
Apr 25, 2023 pm 07:41 PM
Vue.js has become a very popular framework in front-end development today. As Vue.js continues to evolve, unit testing is becoming more and more important. Today we’ll explore how to write unit tests in Vue.js 3 and provide some best practices and common problems and solutions.
How to query the current vue version
Dec 19, 2022 pm 04:55 PM
There are two ways to query the current Vue version: 1. In the cmd console, execute the "npm list vue" command to query the version. The output result is the version number information of Vue; 2. Find and open the package.json file in the project and search You can see the version information of vue in the "dependencies" item.
A simple comparison of JSX syntax and template syntax in Vue (analysis of advantages and disadvantages)
Mar 23, 2023 pm 07:53 PM
In Vue.js, developers can use two different syntaxes to create user interfaces: JSX syntax and template syntax. Both syntaxes have their own advantages and disadvantages. Let’s discuss their differences, advantages and disadvantages.
Let's talk in depth about reactive() in vue3
Jan 06, 2023 pm 09:21 PM
Foreword: In the development of vue3, reactive provides a method to implement responsive data. This is a frequently used API in daily development. In this article, the author will explore its internal operating mechanism.
A brief analysis of how vue implements file slicing upload
Mar 24, 2023 pm 07:40 PM
In the actual development project process, sometimes it is necessary to upload relatively large files, and then the upload will be relatively slow, so the background may require the front-end to upload file slices. It is very simple. For example, 1 A gigabyte file stream is cut into several small file streams, and then the interface is requested to deliver the small file streams respectively.
Let's talk about how to use the Amap API in vue3
Mar 09, 2023 pm 07:22 PM
When we used Amap, the official recommended many cases and demos to us, but these cases all used native methods to access and did not provide demos of vue or react. Many people have written about vue2 access on the Internet. However, in this article, we will take a look at how vue3 uses the commonly used Amap API. I hope it will be helpful to everyone!
