I have two vue apps that are developed independently of each other.
User UI
Admin UI
Both have own routes, store, configs, etc.
I found this comment https://forum.vuejs.org/t/composing-multiple-apps-as-a-single-spa/12622/16 which handles each app as a component inside a main app.
I tried and it and got it working till i tried it with my "real" apps.
They fail miserably because they cant resolve paths and missing stuff like the routing.
Main: App.vue
<script>
export default {
name: "MainApp",
data() {
return {
app: "user",
};
},
methods: {
changeApp(name) {
console.log("Change app called", name);
this.app = name;
},
},
};
</script>
<template>
<div>
<UserApp v-if="app === 'user'" #changeApp="changeApp"></UserApp>
<AdminApp v-else-if="app === 'admin'" #changeApp="changeApp"></AdminApp>
<div v-else>Default App ({{ app }})</div>
</div>
</template>
Main: main.js
import { createApp } from "vue";
import Main from "./App.vue";
import UserApp from '../apps/user/src/App.vue';
import AdminApp from '../apps/admin/src/App.vue';
const main = createApp(Main);
main.component("UserApp", UserApp);
main.component("AdminApp", AdminApp);
main.mount("#main");
Main: index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<link rel="icon" href="/favicon.ico" />
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=0" />
<title>OpenHaus</title>
</head>
<body>
<div id="main"></div>
<script type="module" src="/src/main.js"></script>
</body>
</html>
Inside the main vue app i have a folder called "apps" which contains the admin & user apps.
Each App.vue file is then imported and handled as a file.
Doing this, a important step is missing: How tho handle from each sub-app the main.js file?
Treating each app as a component for the main app sees not as good as thought as first.
How can i combine the two apps together as a single app, while i maintain/develop/test each app separate?
Perhaps after "compiling" as library: https://vitejs.dev/guide/build.html#library-mode ?
User App: https://github.com/OpenHausIO/frontend
Admin App: https://github.com/OpenHausIO/admin-frontend
Main App: https://github.com/OpenHausIO/frontend-composition
I have personally never heard of a setup where two apps are combined into one. I can understand why this would cause the conflicts that you mention. If I was in your shoes I would probably go with a different approach.
It seems that you have a user and admin app. If the intention is to have a user and admin environment where the content is similar, but certain things can only be accessed if you are an admin. I would create one app that establishes based on your credentials whether you will be in the 'admin' or 'user' environment. Which will be one app that is not split up into two.
If the user and admin apps will be completely different in content, then I would simply create two different apps. This will not only resolve the conflicts, but I think it will also give you a clearer overview of the apps that you are working on. It can become difficult to make the distinction on which of the apps you are making a change when both are combined into one. Especially if you intend to upscale the apps in the future.
Related
I am self-learning react and I am just confused about a lot of things.
I thought that if I add React to my index.html via a script like the below:-
//index.html
<!DOCTYPE html>
<html lang="en">
<head>
<title>Bill Details</title>
</head>
<body>
<div id="billTable"></div>
<script src="BillTable.js" type="text/javascript"></script> ------------- Problem Line 1
</script>
</body>
</html>
and this is my js file where I am trying to return react component
//BillTable.js
import React from "react";
import ReactDOM from "react-dom";
function BillTable() {
return <h1>HELLO TABLE</h1>;
}
ReactDOM.render(<BillTable/>, document.getElementById("billTable"));
when I try to open index.html directly in firefox or through express server I get the below error in console:-
Uncaught SyntaxError: import declarations may only appear at top level of a module.
I then got rid of this error by changing the script type in problem line 1 in index.html to
<script src="BillTable.js" type="text/babel"></script>
but then also my webpage is completely blank and even console is not showing any errors.
Please suggest how to solve this issue. I am right now trying to learn React with functional approach only, so if any changes are required to be done on the react side, please make them in the functional approach.
I don't think you have included the correct packages to handle React components and JSX yet. These packages react, react-dom, etc. are usually in a package.json and are required to tell the browser what tools will be used to run the code. These packages handle the "script" or components you create and places the elements constructed in your components to the DOM. You can solve this by loading react with additional script tags before your component's script tag. This will let the browser know how and what to use to run your react component. Also, in your function, it does not know that it is a React Component. Check out an explanation for why you would have to use React.createElement I have attached an example of using only an index.html page here:
example of using an index.html page
Your Component file:
"use strict";
function BillTable() {
return React.createElement("h1", "", "HELLO TABLE");
}
const domContainer = document.querySelector("#billTable");
const root = ReactDOM.createRoot(domContainer);
root.render(React.createElement(BillTable));
and your index.html:
<body>
<div id="billTable"></div>
<!-- Load your React packages -->
<script
src="https://unpkg.com/react#18/umd/react.development.js"
crossorigin
></script>
<script
src="https://unpkg.com/react-dom#18/umd/react-dom.development.js"
crossorigin
></script>
<!-- Load your React component. -->
<script src="BillTable.js"></script>
</body>
I try to understand how the next.js Script tag with the strategy beforeInteractive works. For testing i just used lodash. But i keep getting a ReferenceError: _ is not defined. I thought when a script is loaded with beforeInteractive it should be globally available inside my page Component since it get injected into the initial Html from the server and i could use it for example in the useEffect hook to alter a div.
Can someone explain to me why it's not working or what i'm doing wrong?
I don't installed it via npm because im trying to figure out how it works.
I have a simple _document.js and i added a Next.js script tag with the strategy beforeInteractive to this _document.js. The next.js docs says:
This strategy only works inside _document.js and is designed to load scripts that are needed by the entire site (i.e. the script will load when any page in the application has been loaded server-side).
import { Html, Head, Main, NextScript } from 'next/document'
import Script from 'next/script'
export default function Document() {
return (
<Html>
<Head />
<body>
<Main />
<NextScript />
<Script
src="https://unpkg.com/lodash#4.17.20"
strategy="beforeInteractive"
></Script>
</body>
</Html>
)
}
Then i have a simple page Component inside the pages folder. I added the getServerSideProps function to use ServerSideRendering.
If you export a function called getServerSideProps (Server-Side Rendering) from a page, Next.js will pre-render this page on each request using the data returned by getServerSideProps.
import Head from 'next/head';
import {useEffect, useState} from 'react';
const TestComponent = () => {
const [change,setChange] = useState('not changed');
useEffect(()=> {
console.log(_);
setChange(_.join(['one','two'],' - '));
});
return (
<>
<Head>
<title>Test</title>
</Head>
<div>{change}</div>
</>
);
};
export async function getServerSideProps(context) {
return {
props: {},
}
}
export default TestComponent;
Update
Seems like it is indeed a bug which is fixed but not released yet
https://github.com/vercel/next.js/discussions/37098
Putting aside the fact that you should be importing Lodash as a node module, there does seem to be an issue when using next/script in _document (no matter what the external script actually is).
It turns out this is a Next.js bug that has been addressed in this PR in pre-release version v12.1.7-canary.8. To fix the issue in your project simply update Next.js to version >=12.2.0 (npm install next#latest).
As an alternative, you can use the <script> tag directly in the _document's <Head> with the defer property. This closely matches what the next/script would output.
import { Html, Head, Main, NextScript } from 'next/document'
export default function Document() {
return (
<Html>
<Head>
<script
type="text/javascript"
src="https://unpkg.com/lodash#4.17.20/lodash.js"
defer
></script>
</Head>
<body>
<Main />
<NextScript />
</body>
</Html>
)
}
First and foremost, I'm failing to see virtually any reason you'd want to do this, when you can (and should) simply use install it to node_modules. You're also going to possibly run the risk of the bundle having issues if the library type isn't a module and the next configuration requires a module.
Solution based on the question:
There's two ways.
Firstly, see the docs on this exact thing.
Please use the above method mentioned in the docs.
If that's not an option for whatever reason...
The second is a less than ideal, but working solution.
Create a folder for your static files. Ex: <root>/static/js/hello.js. Then in your _document file,
<script type="text/javascript" src="/static/hello.js"></script>
I made a simple website using Vue and Element UI. I used Laravel Mix to compile my code.
During development, the icons are showing up but when I run "npm run prod" and upload it to Github Pages they wont show up.
This is my webpack.mix.js
let mix = require('laravel-mix');
mix.js('src/js/app.js', 'public/')
.sass('src/styles/app.scss', 'public/')
.babelConfig({})
.disableNotifications();
I am using on demand components and followed this doc so my root vue file looks like this:
import Vue from 'vue'
import store from './vuex'
import router from './vue-router'
import Element from 'element-ui';
import 'element-ui/lib/theme-chalk/index.css';
import lang from 'element-ui/lib/locale/lang/es'
import locale from 'element-ui/lib/locale'
locale.use(lang)
Vue.use(Loading.directive);
Vue.component(Select.name, Select)
Vue.component(Option.name, Option)
Vue.component(Input.name, Input)
Vue.component(Icon.name, Icon)
new Vue({
el: '#app',
router,
store,
});
Following the same doc, I added a .babelrc file on my root directory but I didn't managed to get it working with the preset es2015 so I used #babel/preset-env instead. I dont actually know how to properly use Babel so the whole error might be over here but idk.
{
"presets": [["#babel/preset-env", { "modules": false }]],
"plugins": [
[
"component",
{
"libraryName": "element-ui",
"styleLibraryName": "theme-chalk"
}
]
]
}
I noticed something weird, when I run npm run prod, the output shows something like this:
The fonts folder and the needed fonts are being copied to my root directory, so when its on Github it makes a request to the root domain, the root folder, the right url should be over (I guess?) /h3lltronik.github.io/my-site/ but it is on /h3lltronik.github.io/.
Just in case is needed, Im using the icons like this:
<el-input v-model="search" prefix-icon="el-icon-search" class="filter_input element-input bordered" #input="onChangeSearch"
placeholder="Search for a country..."></el-input>
And this is my index.html
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>H3lltronik</title>
<link rel="stylesheet" href="./public/app.css">
</head>
<body>
<div id="app" :class="modeClass">
<transition name="el-fade-in">
<router-view class="content-body"></router-view>
</transition>
</div>
<script src="./public/app.js"></script>
</body>
</html>
I am a newbie to Vue.js. I don't like working with cli, so I am using CDN for everything but stuck in some unknown problem. I googled many thing but couldn't understand what going on. Any help would be really appreciated.
Here is my index.php
<!DOCTYPE html>
<html>
<head>
<meta charset="8-utf" />
<meta name="author" content="Yash Gaikwad">
<meta name="description" content="">
<meta name="keyword" content="">
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
<link rel="stylesheet" href="style.css"> <!--Stylesheet-->
<link href="https://fonts.googleapis.com/css?family=Montserrat:300,400&display=swap" rel="stylesheet"> <!--Google Fonts-->
<script src="https://www.w3schools.com/lib/w3.js"></script> <!--W3.Css-->
<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-core/6.1.19/browser.js" type="text/babel"></script><!--Bable Hosting-->
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script> <!--Vue Hosting-->
<script src="https://unpkg.com/vue-router/dist/vue-router.js"></script> <!--Vue Router-->
</head>
<body>
<div id="app">
</div>
<script src="script.js"></script> <!--Javascript-->
</body>
</html>
Here is my script.js
import app from "./main.vue"
new Vue({
el: "#app",
data: {
},
methods: {
},
render: h => h(app)
});
This is my main.vue (root component)
<template>
<app-header></app-header>
<app-footer></app-footer>
</template>
<script>
import Header from "./components/header.vue";
import Footer from "./components/footer.vue";
export default {
components: {
"app-header": Header,
"app-footer": Footer
}
}
</script>
<style scoped>
</style>
Seems to me that importing main.vue is causing error. And something is going wrong there.
This are the errors I being getting from both ff and chrome
Uncaught SyntaxError: Cannot use import statement outside a module
SyntaxError: import declarations may only appear at top level of a module
Thankyou every much guys.
.vue is not a file type that a browser understands. If you want to build VueJS applications without using any CLI tools you'll have to learn about ES6 Modules and understand that your application won't be supported by all browsers.
CLI tools like Webpack transforms your JavaScript and Vue code into JavaScript code that is compatible with more browsers, minifies your code (makes the size of the files that are downloaded smaller), etc. It also makes it much easier for you to use third-party packages in your code, as well as to keep them updated.
Using a CLI tool like Webpack or VueCLI for Vue apps will make your life much easier in the long run and is the standard way of doing things across the industry.
Always import statement should be at the top of the file,
you are using template and then the import
in main.vue put script block to the top and then the template
The browser cannot understand .vue extension while using vue CDN so replace that with .js or load vue via CLI instead.
Next inside the JS (vue) files, remove the template, style and script tag and make it look like this:
//header.js
export default {
data: () => ({
}),
template:`<h1>Header</h1>`
}
//footer.js
export default {
data: () => ({
}),
template:`<h1>Footer</h1>`
}
Next, add a type module to your script tag like:
<script type="module">
import Header from "./components/header.js";
import Footer from "./components/footer.js";
export default {
components: {
"app-header": Header,
"app-footer": Footer
}
}
</script>
You can also replace ES6 import statement with ES5 require if you don't want to use type="module"
I am learning React but i am stuck here since a week , can't figure it out !!
please help
I am learning React but i am stuck here since a week , can't figure it out !!
please help
index.html:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<!-- Load our React component. -->
</head>
<body>
<div id="apps">
</div>
<script type="module" src="./script.js"></script>
</body>
</html>
Navbar.js:
import React from './react.js';
//import {ReactDOM} from './react-dom.js';
export class NavBar extends Component {
constructor(props) {
super(props);
this.state = { }
}
render() {
return ( this.props.items.map(item =>{ <li>{item}</li>}));
}
}
script.js
//import {React} from './react.js';
//import {ReactDOM} from './react-dom.js';
import {NavBar} from './navbar.js';
ReactDOM.render(
<NavBar items={['Rohit','Rajiv']}/>,
document.getElementById('root')
);
I am getting this error
The requested module './react.js' does not provide an export named 'default'
To begin with, in your provided source code there are several issues that stand out.
To take advantage of the answers provided to you here it will require some understanding of how react works, such as setting up a basic react project, and some familiarity with the react eco-system, such as node, npm and babel. Not to mention a sufficient understanding of JavaScript and the ES6 syntax.
There are many getting started guides for react available online that can get you up and running in a short amount of time.
I recommend ignoring your current progress for now and start with this guide.
w3Schools.com React Tutorial
Follow all the steps in this tutorial. It is explained step by step, and by the end of it you will have solid understanding of using react. Take your time, and finish this tutorial from start to finish. That is my advice, as finishing one tutorial from start to finish is better than starting 50 and not finishing them.
If you would like, leave a comment and you can get in touch with me via email with any difficulties and Ill do my best to help out.
Best of luck and hope you have fun along the way.