I don't understand why it's not working and this driving me crazy
<template>
<p>{{ greeting }}</p>
</template>
<script>
export default {
name: 'App',
data: function(){
return {
greeting: 'this is message'
}
}
}
</script>
Why {{ greeting }} not working ? It should be run the text. But I got this error
Errors compiling template:
Component template should contain exactly one root element. If you are using v-if on multiple elements, use v-else-if to chain them instead.
Can anyone help me with this ?
You should have a <div> with an id app inside your <template> tag
<template>
<div id="app">{{greeting}}</div>
</template>
<script>
export default {
name: "App",
data: function() {
return {
greeting: "this is message"
};
}
};
</script>
Related
I got this error :
Component template should contain exactly one root element. If you are
using v-if on multiple elements, use v-else-if to chain them instead.
When try :
<template>
<h1>Il tuo oroscopo</h1>
<h3>{{ msg }}</h3>
</template>
<script>
export default {
data() {
return {
msg: 'Hello World!'
}
}
}
</script>
<style scoped></style>
You have to put a div in root. Only one.
<template>
<div>
<h1>Il tuo oroscopo</h1>
<h3>{{ msg }}</h3>
</div>
</template>
<script>
export default {
data() {
return {
msg: 'Hello World!'
}
}
}
</script>
<style scoped></style>
As error says itself Component template should contain exactly one root element.
This means, wrapped the template content with in a single element which will be work as a root element. Hence, wrapping with a <div> will resolve this error.
Demo :
Vue.component('child', {
props: ['childmsg'],
template: `<div><h1>Il tuo oroscopo</h1>
<h3>{{ childmsg }}</h3></div>`
});
var app = new Vue({
el: '#app',
data: {
msg: 'Hello World!'
}
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="app">
<child :childmsg="msg">
</child>
</div>
i'm really stuck in this silly problem. i worked with many props but this one is a headache. maybe i'm missing something...!!!
i'm sending an object as prop from my page to a component (as i did many times!!) but on my component it's undefined!! i tried many ways (some simple data instead of obj, not bind prop, ...) but nothing!
BTW i'm on nuxt 2.13
here's my code:
page:
<template>
<mycomp :err="inputError" />
<template>
<script>
import mycomp from '~/components/mycomp'
export default{
components:{
'mycomp': mycomp
}
data(){
return{
inputError: {
error: false,
msg: null
}
}
},
}
</script>
and my component:
<template>
<div>
{{err}} --> this show nothing too
</div>
<template>
<script>
export default{
props:['err']
data(){
return{
//
}
},
create(){
console.log(this.err) // undefined
}
}
</script>
You are making many typo mistakes. like kerbh0lz mentioned. I urge you to validate the incoming props. It will save you a lot of time in debugging.
Anyway here is the working snippet
//App.vue
<template>
<div id="app">
<HelloWorld :err="inputError"/>
</div>
</template>
<script>
import HelloWorld from "./components/HelloWorld";
export default {
name: "App",
components: {
HelloWorld
},
data() {
return {
inputError: {
error: false,
msg: null
}
};
}
};
</script>
//HelloWorld.vue
<template>
<div class="hello">
<h1>{{ err }}</h1>
</div>
</template>
<script>
export default {
name: "HelloWorld",
props: {
err: {
type: Object
}
},
created() {
console.log(this.err);
}
};
</script>
Sandbox
I am trying to use a child compontent in another compontent and it does not work. I have been trying to solve this problem looking for typos etc. for hours, but can't find anything.
Menu.vue
<template>
<div class='navbar-and-alert'>
<alert/>
<nav class='navbar'>
</nav>
</div>
</template>
<script>
import Alert from './Alert.vue'
export default {
name: 'Navbar',
compontents: {
Alert
},
data (){
return {
}
},
}
</script>
Alert.vue
<template>
<section class='alert-section'>
<p class='alert-section__content'>
...
</p>
<a href=''><img src='/static/assets/img/close.svg' class='alert-section__close-icon'></a>
</section>
</template>
<script>
export default {
name: 'Alert',
}
</script>
I get this alert in console:
Vue warn]: Unknown custom element: - did you register the component correctly? For recursive components, make sure to provide the "name" option.
found in
The alert component works when used inside App.vue
components has a typo:
compontents: {
Alert
},
Should be:
components: {
Alert
},
I use vue(2.6.10) an Im trying to build a universal table with vuetable2 (2.0.0-beta.4).
I created a component for the general methods of vuetable.
I tried to place my "MyCustomTemplate" in the slot section of the "MyVueTable", but I got no error and nothing is shown.
My goal is to use the "MyVueTable" in other vue pages and replace the "MyCustomTemplate".
I have currently 3 entries in my data but in the List.vue component nothing is shown
List.vue
<template>
<MyVueTable :data="data" :fields="fields">
<MyCustomTemplate v-slot="vueTableTemplateSlot"/>
</MyVueTable>
</template
<script>
export default {
name:"List",
data(){
return{
data: [],
fields: [
{
name: 'vueTableTemplateSlot'
}
]
};
}
}
</script>
MyVueTable.vue
<template>
<vuetable ref="vuetable">
<slot name="vueTableTemplateSlot" slot-scope="props"/>
</vuetable>
</template>
<script>
export default {
name: 'MyVueTable',
props: ['data', 'fields'],
methods:{
//vuetable methods
}
}
</script>
MyCustomTemplate.vue
<template>
<div>
{{rowData.id}}
</div>
</template>
<script>
export default {
name: 'MyCustomTemplate',
data(){
return{
rowData: null
}
}
</script>
You can test to put your component(in List.vue) in a div or a template that will be the slot content :
<template #nameOfYourSlot>
<NameOfYourComponent>
</template>
This was answered in the official repository, you need to do this to be your custom global component: https://github.com/ratiw/vuetable-2-tutorial/wiki/lesson-17
I have an issue with the nuxt.js project. I used async the component but when it rending, async wasn't working. This is my code.
I have view document in https://nuxtjs.org/api/ but I don't know what is exactly my issue
Test.vue (component)
<template>
<div>
{{ project }}
</div>
</template>
<script>
export default {
data() {
return {
project : 'aaaa'
}
},
asyncData() {
return {
project : 'bbbb'
}
}
}
</script>
This is index.vue (page)
<template>
<test></test>
</template>
<script>
import Test from '~/components/Test.vue'
export default {
components : {
Test
}
}
</script>
My expected result is
bbbb
But when running on http://localhost:3000 this is actual result
aaaa
I try to search google many times but don't have expected solution for me. Someone help me, please.
Thanks for helping.
The components/ folder must contains only "pure" Vue.js components
So you can't use asyncData inside.
Read this FAQ: https://nuxtjs.org/faq/async-data-components#async-data-in-components-
components/Test.vue (component)
<template>
<div>
{{ project }}
</div>
</template>
<script>
export default {
props: ['project'] // to receive data from page/index.vue
}
</script>
pages/index.vue (page)
<template>
<test :project="project"></test>
</template>
<script>
import Test from '~/components/Test.vue'
export default {
components : {
Test
},
asyncData() {
return {
project : 'bbbb'
}
}
}
</script>
You cannot use asyncData in component.
You can choose to use the fetch method instead.
<template>
<div>
<p v-if="$fetchState.pending">Loading....</p>
<p v-else-if="$fetchState.error">Error while fetching mountains</p>
<ul v-else>
<li v-for="(mountain, index) in mountains" :key="index">
{{ mountain.title }}
</li>
</ul>
</div>
</template>
<script>
export default {
data() {
return {
mountains: []
}
},
async fetch() {
this.mountains = await fetch(
'https://api.nuxtjs.dev/mountains'
).then(res => res.json())
}
}
</script>