i got a site with a cms here, which generates html the common way. Now i try to add Vue 3. CSS and JS is created by webpack.
The CMS generates a source like this:
<html>
<head>
<script src="/dist/app.js"></script>
<link rel="stylesheet" type="text/css" href="/dist/app.css">
</head>
<body>
<div id="app">
<h1>Hello {{name}}</h1>
<MyComponent />
<div>Awesome Copyright</div>
</div>
</body>
</html>
Is it possible to mount vue 3 to #app, but keep the source as structure/content for the page and use vue 3 inside? Like setting {{name}} to a value from vue and MyComponent from a vue file? And all JS is compiled by webpack?
I did not figure out how to solve this. Something like SSR seems not to be a practicable solution and switching to a headless constellation with the cms as api is not either.
After reading and understanding the documentation, i answer myself.
https://v3.vuejs.org/guide/installation.html#with-a-bundler
See section "In-browser template compilation".
Step 1: Alias vue within webpack
resolve: {
alias: {
vue: "vue/dist/vue.esm-bundler.js"
}
}
Step 2: Run Vue ;-)
createApp({
data() {
return {
name: 'John Doe'
}
},
}).mount('#app')
The definition of template is not necessary. It takes the content from #app.
You can do this
createApp({
data() { return {} },
template: document.querySelector('#app').innerHTML
}).mount('#app')
Vue3 version is out, but I don't see any example of using old components code with the new version. How come?
Here is my index.html:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>Vue 3 Example using Vue 2 component</title>
<script src="https://unpkg.com/vue#next"></script>
</head>
<body>
<div id="app">
<h1>{{ product }}</h1>
<my-old-vue-component :my-prop="'my string in here'"></my-old-vue-component>
</div>
<script src="./main.js"></script>
<script src="./myOldVueComponent.vue"></script>
<!-- Mount App -->
<script>
const mountedApp = app.mount('#app')
</script>
</body>
</html>
Here is my main.js:
const app = Vue.createApp({
data() {
return {
product: 'my product',
}
}
})
Here is my old simple Vue2 component (myOldVueComponent.vue):
<template>
<div>
{{myProp}}
</div>
</template>
<script>
export default {
name: "myOldVueComponent",
props: {
myProp: { type: String }
},
data() {
return {
},
}
</script>
I'm getting error on the import of ".vue" file:
uncaught SyntaxError:
Unexpected token '<'
(meaning the <template> tag inside my old component.
Vue2 components works in Vue3. That is not the issue in your code.
The problem is here:
<script src="./myOldVueComponent.vue"></script>
You can't import .vue files directly in a browser. You could not do it in vue 1,2 and you can't yet in vue 3. The browser is not able to understand that syntax, there needs to be a bundler that converts your code is something that can be used by the browser. The most popular bundlers are webpack, rollup ecc ecc
See: https://v3.vuejs.org/guide/single-file-component.html#for-users-new-to-module-build-systems-in-javascript
I highly recommend using the Vue cli to setup your project, especially if you are a beginner to the npm/bundlers world
I am trying to get the simplest of page routing working using vue-cli.
I have been trying to follow the Vue-router documentation (https://router.vuejs.org/guide/#html) as well as various other guides I have come across on google and have not been successful getting anything working on vue-cli.
I was able to get the example shown here: https://www.tutorialspoint.com/vuejs/vuejs_routing working, which does not use vue-cli. From there I tried to 'copy' that example into vue-cli to see if I can get it to work.
My main.js file looks like this:
import Vue from 'vue';
import VueRouter from 'vue-router';
import App from './App.vue';
Vue.config.productionTip = false
const Route1 = { template: '<div>router 1</div>' }
const Route2 = { template: '<div>router 2</div>' }
const routes = [
{ path: '/route1', component: Route1 },
{ path: '/route2', component: Route2 }
];
const router = new VueRouter({
routes
});
new Vue({
el: '#app',
router,
render: h => h(App)
});
And my App.vue file looks like this:
<template>
<div id="app">
<h1>Routing Example</h1>
<p>
<router-link to = "/route1">Router Link 1</router-link>
<router-link to = "/route2">Router Link 2</router-link>
</p>
<router-view></router-view>
</div>
</template>
<script>
export default {
}
</script>
It does not work. I have tried both direct access to the dist/index.html on the file system and viewing the app on localhost, using npm run serve. I see the page but the <router-link> tags render only as <router-link>, not as anchor (<a>) tags. It is impossible to click on them and thus no routing is happening.
The page in my browser has the following source:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width,initial-scale=1">
<link rel="icon" href="favicon.ico">
<title>ucic</title>
<link href="js/app.a486cc75.js" rel="preload" as="script">
<link href="js/chunk-vendors.a6df83c5.js" rel="preload" as="script">
</head>
<body>
<noscript><strong>We're sorry but ucic doesn't work properly without JavaScript enabled. Please enable it to continue.</strong></noscript>
<div id="app">
<h1>Routing Example</h1>
<p>
<router-link to="/route1">Router Link 1</router-link>
<router-link to="/route2">Router Link 2</router-link>
</p>
<router-view></router-view>
</div>
<script src="js/chunk-vendors.a6df83c5.js"></script>
<script src="js/app.a486cc75.js"></script>
</body>
</html>
There are no console errors and no errors trying to download javascript files.
Can anyone point me in the right direction? What am I doing wrong?
Update:
As Pukwa has mentioned, I did not correctly mount the application. After doing so I no longer receive a white screen, but as mentioned above, the <router-link> tag is not rendering as an anchor but literally as a <router-link> tag. The javascript is obviously doing something, or else even that wouldn't show up on the page.
I've updated my question rather than ask a new one as my original problem has not been solved (vue-router is still not working) and this is only one of many iterations to try and get this to work (I have, on previous iterations, had the application correctly mounted and seen the error described above).
I guess you did not mount your application inside of main.js
new Vue({
el: '#app',
router,
render: h => h(App)
});
I had to apply three fixes to make this code work:
mounting the application as identified by Puwka in their answer
Adding Vue.use(VueRouter); in main.js (I got help from answers to this question: [Vue warn]: Unknown custom element: <router-view> - did you register the component correctly?)
Adding "runtimeCompiler": true to vue.config.js (I got help from answers to this question: Vue replaces HTML with comment when compiling with webpack and this: https://cli.vuejs.org/config/#runtimecompiler)
Additionally, I was not able to see logs in the console because it seems vue or npm turns off logging? (I have to use // eslint-disable-next-line no-console before I can use a console.log statement).
A comment to this question Vue router does not render/mount root path component helped me to resolve that problem. Somehow, after logging out this.$router.currentRoute.path in a mounted function I was able to see the errors in the developer console.
Note: Can we write vue.js large application without using any compiler for code like currently i see all example use webpack now to make vue.js code compatible for browser .
I want make vue.js application without webpack and without using .vue extension. Is it possible? if it is possible, can you provide a link or give sample how to use routing in that case.
As we make component in .vue extension can be make component in .js extension and use application as we do in angular 1 where we can make whole app without any trans-compiler to convert the code.
Can be done that in html , css , js file only and no webpack sort of thing.
What i have done .
index.js
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1.0">
<title>vueapp01</title>
</head>
<body>
<div id="app"></div>
<!-- built files will be auto injected -->
</body>
</html>
main.js this file added in webpack load time
// The Vue build version to load with the `import` command
// (runtime-only or standalone) has been set in webpack.base.conf with an alias.
import Vue from 'vue'
import App from './App'
import router from './router'
Vue.config.productionTip = false
/* eslint-disable no-new */
new Vue({
el: '#app',
router,
components: { App },
template: '<App/>'
})
App.vue
<template>
<div id="app">
<img src="./assets/logo.png">
Hello route
Helloworld route
{{route}}
<router-view/>
<!-- <hello></hello> -->
</div>
</template>
<script>
export default {
name: 'App',
data () {
return {
route : "This is main page"
}
}
}
</script>
router
import Vue from 'vue'
import Router from 'vue-router'
import HelloWorld from '#/components/HelloWorld'
import Hello from '../components/Hello'
Vue.use(Router)
export default new Router({
routes: [
{
path: '/',
name: 'HelloWorld',
component: HelloWorld
},
{
path: '/hello',
name: 'Hello',
component: Hello
}
]
})
I have done something like this . Can we do this by just html , css , js file only with not webpack to compile code . Like we do in angular 1 .
Thanks
As stated in this jsFiddle: http://jsfiddle.net/posva/wtpuevc6/ , you have no obligation to use webpack or .vue files.
The code below is not from me and all credit goes to this jsFiddle creator:
Create an index.html file:
<script src="https://npmcdn.com/vue/dist/vue.js"></script>
<script src="https://npmcdn.com/vue-router/dist/vue-router.js"></script>
<script src="/js/Home.js"></script>
<script src="/js/Foo.js"></script>
<script src="/js/router.js"></script>
<script src="/js/index.js"></script>
<div id="app">
<router-link to="/">/home</router-link>
<router-link to="/foo">/foo</router-link>
<router-view></router-view>
</div>
Home.js
const Home = { template: '<div>Home</div>' }
Foo.js
const Foo = { template: '<div>Foo</div>' }
router.js
const router = new VueRouter({
mode: 'history',
routes: [
{ path: '/', component: Home },
{ path: '/foo', component: Foo }
]
})
index.js
new Vue({
router,
el: '#app',
data: {
msg: 'Hello World'
}
})
Appreciate the framework...
Just a sidenote: .vue files are really awesome, you should definitely try them if not using them is not a requirement
I have started learning vue.js also and I am not familiar with webpack and stuff and I also wanted to still separate and use .vue files as it makes management and code cleaner.
I have found this library:
https://github.com/FranckFreiburger/http-vue-loader
and a sample project using it:
https://github.com/kafkaca/vue-without-webpack
I am using it and it seems to work fine.
You perfectly can, but with a lot of disadvantages. For example: you cannot easily use any preprocessor, like Sass or Less; or TypeScript or transpile source code with Babel.
If you don't need support for older browser, you can use ES6 modules today. Almost all browsers support it. See: ES6-Module.
But Firefox doesn't support dynamic import(). Only Firefox 66 (Nightly) support it and need to be enabled.
And if that wasn't enough, your web application will not be indexed. It's bad for SEO.
For example, Googlebot can craw and index Javascript code but still uses older Chrome 41 for rendering, and it's version don't support ES6 modules.
If that are not disadvantages for you, then you can do this:
Remove any thirty party library import like Vue, VueRouter, etc. And include those in the index.html file using script tags. All global variables are accesible in all es6 modules. For example, remove this line from main.js and all .vue files:
import Vue from 'vue';
And add this line in your index.html:
<script src="https://npmcdn.com/vue/dist/vue.js"></script>
Rewrite all .vue files and change file extension to .js. For example, rewrite something like this:
<template>
<div id="home-page">
{{msg}}
</div>
</template>
<script>
export default {
data: function() {
return { msg: 'Put home page content here' };
}
}
</script>
<style>
#home-page {
color: blue;
}
</style>
to something like this:
let isMounted = false; /* Prevent duplicated styles in head tag */
export default {
template: `
<div id="home-page"> /* Put an "id" or "class" attribute to the root element of the component. Its important for styling. You can not use "scoped" attribute because there isn't a style tag. */
{{msg}}
</div>`,
mounted: function () {
if (!isMounted) {
let styleElem = document.createElement('style');
styleElem.textContent = `
#home-page {
color: blue;
}
`;
document.head.appendChild(styleElem);
isMounted = true;
}
},
data: function () {
return {
msg: 'Put home page content here'
};
}
}
It is all. I put an example in this link
P.S. Text editing without syntax highlighting can be frustrating. If you use Visual Studio Code you can install Template Literal Editor extension. It allows editing literal strings with syntax highlight. For styles select CSS syntax, and for templates HTML syntax. Unknown tag in HTML are highlighted differently. For solve this, change the color theme. For example, install Brackets Dark Pro color theme or any theme do you like.
Regards!
For sure you can. We did a project with Vue, and we had couple of problems during compiling .vue files.
So we switched to structure with three separate files.
But be aware that you need webpack anyway. The idea of Vue was to split huge projects into components, so using template inside .js file it's pretty normal.
So take a look at
html-loader
And
css-loader
Using these modules you can write something like this:
component.js
// For importing `css`. Read more in documentation above
import './component.css'
// For importing `html`. Read more in documentation above
const templateHtml = require('./component.html')
export default {
name: 'ComponentName',
components: { /* your components */ },
mixins: [/* your mixins */ ],
template: templateHtml,
computed: .....
}
component.css
#header {
color: red
}
component.html
<div id="header"></div>
BUT
You need to know that HTML file should be written in the same way as I you will have it in template property.
Also, take a look at this repo, maybe you will find something useful here
Vue-html-loader. It is a fork from html-loader by Vue core team.
In vuejs 3 you you can do it in an ES6 modular fashion (no webpack or other tools required):
index.html
<!DOCTYPE html>
<html>
<head>
<script type="importmap">
{
"imports": {
"vue": "https://unpkg.com/vue#3.0.11/dist/vue.esm-browser.js",
"vue-router": "https://unpkg.com/vue-router#4.0.5/dist/vue-router.esm-browser.js",
"html" : "/utils/html.js"
}
}
</script>
<script src="/main.js" type="module"></script>
</head>
<body>
<div id="app"></div>
</body>
</html>
main.js
import { createApp, h } from 'vue';
import {createRouter, createWebHashHistory} from 'vue-router';
import App from './components/App.js';
const routes = [//each import will be loaded when route is active
{ path: '/', component: ()=>import('./components/Home.js') },
{ path: '/about', component: ()=>import('./components/About.js') },
]
const router = createRouter({
history: createWebHashHistory(),
routes,
})
const app = createApp({
render: () => h(App),
});
app.use(router);
app.mount(`#app`);
components/App.js
import html from 'html';
export default {
name: `App`,
template: html`
<router-link to="/">Go to Home</router-link>
<router-link to="/about">Go to About</router-link>
<router-view></router-view>
`};
components/Home.js
import html from 'html';
export default {
template: html`
<div>Home</div>
`};
components/About.js
import html from 'html';
export default {
template: html`
<div>About</div>
`};
utils/html.js
// html`..` will render the same as `..`
// We just want to be able to add html in front of string literals to enable
// highlighting using lit-html vscode plugin.
export default function () {
arguments[0] = { raw: arguments[0] };
return String.raw(...arguments);
}
Notes:
Currently (04/2021) importmap works only on chrome (firefox in progress). To make the code compatible with other browsers also, just import (on each .js file) the dependencies directly from the urls. In this case though vue-router.esm-browser.js still imports 'vue', so you should serve an updated version of it, replacing import { .... } from 'vue' with import { .... } from 'https://unpkg.com/vue#3.0.11/dist/vue.esm-browser.js'
To avoid waterfall loading effect, you can add <link rel="modulepreload" href="[module-name]"> entries to index.html to start preloading some or all modules asynchronously before you need them.
A Related article
Vue can be included on a single html page quite simply:
Vue 3 minimal example:
<script src="https://unpkg.com/vue#3/dist/vue.global.js"></script>
<div id="app">{{ message }}</div>
<script>
const { createApp } = Vue
createApp({
data() {
return {
message: 'Hello Vue!'
}
}
}).mount('#app')
</script>
Vue 2 minimal example, with Vuetify
<!DOCTYPE html>
<html>
<head>
<link href="https://fonts.googleapis.com/css?family=Roboto:100,300,400,500,700,900" rel="stylesheet">
<link href="https://cdn.jsdelivr.net/npm/#mdi/font#6.x/css/materialdesignicons.min.css" rel="stylesheet">
<link href="https://cdn.jsdelivr.net/npm/vuetify#2.x/dist/vuetify.min.css" rel="stylesheet">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no, minimal-ui">
</head>
<body>
<div id="app">
<v-app>
<v-main>
<v-container>Hello world</v-container>
</v-main>
</v-app>
</div>
<script src="https://cdn.jsdelivr.net/npm/vue#2.x/dist/vue.js"></script>
<script src="https://cdn.jsdelivr.net/npm/vuetify#2.x/dist/vuetify.js"></script>
<script>
new Vue({
el: '#app',
vuetify: new Vuetify(),
})
</script>
</body>
</html>
vue 2 guides:
https://v2.vuejs.org/v2/guide/installation.html#CDN
https://vuetifyjs.com/en/getting-started/installation/#usage-with-cdn
vue 3 guide: https://v2.vuejs.org/v2/guide/installation.html#CDN
Trying set up Vue Router. Not sure what I am doing wrong. Getting the error
Failed to mount component: template or render function not defined. (found in root instance)
Again, I'm coming to Vue from React and while they are pretty similar there are small things that are different and there aren't as many Vue resources out there yet.
I'm using the Webpack template and using single file components. One thing I didn't completely understand was this part in the documentation
// 1. Define route components.
// These can be imported from other files
const Foo = { template: '<div>foo</div>' }
const Bar = { template: '<div>bar</div>' }
Is this just he same as me doing import Foo from 'path/to/component/ ?
Anyway, thanks for any and all help!
Here is my main.js file
import Vue from 'vue'
import App from './App'
import QuizBuilder from '../src/components/QuizBuilder.vue'
import ResourceInfo from '../src/components/ResourceInfo.vue'
import VueRouter from 'vue-router'
Vue.use(VueRouter)
const routes = [
{ path: '/info', component: ResourceInfo },
{ path: '/quiz-builder', component: QuizBuilder }
]
const router = new VueRouter({
routes
})
const app = new Vue({
router
}).$mount('#app')
My index.html looks like this
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
<title>Digestible</title>
</head>
<body>
<div id="app">
<router-view></router-view>
</div>
<!-- built files will be auto injected -->
</body>
</html>
Assuming you have the components properly, you still need a small update.
When loading vue router as module system, the application should be initialized with the following way:
new Vue({
el: '#app',
router,
render: h => h(App)
});