I want to use the v-html directive with a dynamic component in Vuejs (3).
But the content from v-html don't show up.
<component :is="Whatever" v-html="HTMLString"></component>
Any Ideas?
As I mentioned in the comment. You can pass HTML string in a normal param and then in your custom component you can bind that using v-html tag.
Give a try :
Vue.component("Whatever", {
props: ["str"],
template: '<div v-html="str"></div>'
});
new Vue({
el: "#app",
data: {
htmlString: '<h1>Hello</h1>'
}
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="app">
<component is="Whatever" :str="htmlString">
</component>
</div>
Related
I want to create nested element mounted vue.
However, vue-devtools can't detect components in vue component with v-pre. See desired code below:
HTML:
<body>
<div id="app">
<header></header>
<main id="main" v-pre>
something contents... <!-- NOT detected by vue-devtools -->
</main>
<footer></footer>
</div>
</body>
Attached JavaScript:
...
// About layouts
new Vue({
el: '#id',
components: {
Header,
Footer
}
});
// About main contents
new Vue({
el: '#main',
components: {
...
}
});
...
How do I solve this?
I have my input field in one div, and will have label in another div (as sidebar in my application). I want to update label in sidebar, as I type in input on first div.
I am happy to create second div a component if that's the way. I was reading online, and it was said we could use props to pass data to component. But I am not able to link input field to component. Please find my code as below:
var app = new Vue({
el: '#div1',
data: {
message: ''
}
})
Vue.component('testp', {
props: ['message'],
template: '<p>Message is: {{ message }}</p>'
})
var div2 = new Vue({
el: '#div2'
});
<!DOCTYPE html>
<html>
<head>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
</head>
<body>
<div id="div1">
<input v-model="message" placeholder="edit me">
</div>
<div id="div2">
<testp></testp>
</div>
</body>
</html>
As Pointed in Comment You have no reason to have two separate Vue instance and the First Answer is correct. But in some cases where you really need to have multiple Vue instances, you can actually use them in the following manner.
var app = new Vue({
el: '#div1',
data: {
message: ''
}
})
Vue.component('testp', {
props: ['message'],
template: '<p>Message is: {{ message }}</p>'
})
var div2 = new Vue({
el: '#div2',
computed: {
newMessage() {
return app.message;
}
},
});
Html
<!DOCTYPE html>
<html>
<head>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
</head>
<body>
<div id="div1">
<input v-model="message" placeholder="edit me">
</div>
<div id="div2">
<testp :message="newMessage"></testp>
</div>
</body>
</html>
Please observe the computed value newMessage is actually getting its value form a different Vue instance (app) and it is also reactive. Therefore whenever the value in first Vue instance changes, it is updated in another Vue instance.
Codepen: https://codepen.io/ashwinbande/pen/xMgQQz
Like I have pointed out in my comments, there is no reason for you to use two separate Vue instances. What you can do is simply wrap everything within an app container, e.g. <div id="#app">, and then instantiate your VueJS instance on that element instead.
Then, you can use v-bind:message="message" on the <testp> component to pass in the message from the parent. In this sense #div1 and #div2 are used entirely for markup/decorative purposes and are not used as VueJS app containers in your code.
Vue.component('testp', {
props: ['message'],
template: '<p>Message is: {{ message }}</p>'
});
var app = new Vue({
el: '#app',
data: {
message: ''
}
});
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<div id="app">
<div id="div1">
<input v-model="message" placeholder="edit me">
</div>
<div id="div2">
<testp v-bind:message="message"></testp>
</div>
</div>
How to get parent of clicked (this) element in Vue.js?
In jQuery this looks like:
$(this).parents(':eq(2)').next('.press__news__nav--view').show();
Thanks!
It's not a good practice in Vue when you're trying to manipulate DOM directly. If you want to show/hide an element, you should use v-if or v-show directives.
Anyway, you can access event object like this:
new Vue({
el: '#app',
methods: {
logme: function(event) { // a regular event object is passed by $event in template
console.log(event.target.parentElement) // parent element
}
}
});
<script src="https://unpkg.com/vue/dist/vue.js"></script>
<div id="app">
<div class="hello">
<button #click="logme($event)">Click me</button>
</div>
</div>
I'm trying to create a component, that can show/hide on click, similar to an accordion.
I have the following error and I don't know why:
[Vue warn]: Property or method "is_open" is not defined on the
instance but referenced during render. Make sure to declare reactive
data properties in the data option. (found in root instance)
<div id="app">
<div is="m-panel" v-show="is_open"></div>
<div is="m-panel" v-show="is_open"></div>
</div>
</body>
<script src="https://unpkg.com/vue/dist/vue.js"></script>
<script src="comp_a.js" ></script>
<!--<script src="app.js" ></script>-->
</html>
Vue.component('m-panel', {
data: function() {
return {
is_open: true
}
},
template: '<p>Lorem Ipsum</p>'
})
new Vue({
el:'#app',
})
Your code seems a little confused, your is_open is in your component but you are trying to access it in the parent. You just need to make sure this logic is contained inside your component. The easiest way is to simply place an event on the relevant element in your component template:
<template>
<div>
<!-- Toggle when button is clicked-->
<button #click="is_open=!is_open">
Open Me!
</button>
<span v-show="is_open">
I'm Open!
</span>
</div>
</template>
Here's the JSFiddle: https://jsfiddle.net/ytw22k3w/
Because u used is_open property in '#app instance' but u didnt declare in it,u decladed in 'm-panel component' which has no relation with it.Try something like this can avoid it.
new Vue({
el:'#app',
data:{
is_open:''
}
})
I have a dynamic component that is resolved and bound on runtime using the documented dynamic component syntax;
<div class="field">
<component v-if="component" :is="component" #valueUpdated="onUpdate($event)"></component>
</div>
Decided using a prop assigned to on mounting.
For whatever reason, when the child component, rendered dynamically, emits an event this.$emit('eventName', /*someData*/) the parent does not seem to be able to hear it. Is the approach used in standard components applicable to those rendered dynamically? Props seem to work, so maybe I am not doing something correctly?
yeah you can use props with dynamic components it's just you need to use lowercase hyphenated (kebab-case) names for the html attribute, i.e.
<component v-if="component" :is="component" #value-updated="onUpdate"></component>
Vue.component('foo', {
template: `
<div>
<button #click="$emit('value-updated', { bar: 'baz' })">pass data</button
</div>
`
});
new Vue({
el: '#app',
data: {
currentComponent: 'foo',
output: {},
},
methods: {
onUpdate (payload) {
this.output = payload
}
}
})
<script src="https://unpkg.com/vue/dist/vue.js"></script>
<div id="app">
<component v-if="currentComponent" :is="currentComponent" #value-updated="onUpdate"></component>
<pre>{{ output }}</pre>
</div>