Vue.js component issue - vue.js

js i'm starting to catch up on it but i'm stuck on components would appreciate your help thanks
//here is my js
Vue.component('thatsCool', {
template: document.querySelector('#myOwnTemplate'),
data: function() {
return {
helloWorld: 'thats cool',
};
},
});
new Vue({
el: 'body',
});
//and this is my html
<! DOCTYPE html>
<html>
<head>
<title>playing with Vue components</title>
</head>
<body>
<thatsCool></thatsCool>
<script id="myOwnTemplate" type="x/template">
<p v-text="helloWorld"></p>
</script>
<script src="vue.js"></script>
<script src="component.js"></script>
</body>
</html>

There are a couple of errors in your code. Use dash-separated convention for your components and simple handlebar notation for string output. Try with this code:
HTML
<thats-cool></thats-cool>
<script id="myOwnTemplate" type="x-template">
<p>{{ helloWorld }}</p>
</script>
JS
Vue.component('thats-cool', {
template: '#myOwnTemplate',
replace : true,
data: function() {
return {
helloWorld: 'thats cool',
};
}
});
Note that the option 'replace : true' replaces the original template's content of el instead of appending to it.

Related

How can I use passed data using props in child component v-bind:style?

I'm trying to get data from parent component and use them in child component v-bind:style.
Here's my code.
<body>
<div id="parentComponent">
<child-component v-bind:propsdata="parentBackground" v-bind:propsdata2="parentFontstyle"></child-component>
</div>
<script>
Vue.component('child-component', {
props: ['propsdata', 'propsdata2'],
data: function() {
return {
childBackground: this.propsdata,
childFontStyle: this.propsdata2
},
template: '<p v-bind:style="childBackgroundColor, childFontStyle">Child componnent Area</p>'
});
new Vue ({
el: '#parentComponent',
data: function() {
return {
parentBackground: 'background-color:yellow;',
parentFontStyle: 'font-style: italic;'
},
})
</body>
When I run this code, only second style(childFontStyle) is applied to Child componnent template.
I also tried v-bind:style="[childBackgroundColor, childFontStyle]" and doesn't work.
Is there any way to apply both style?
You need to pass the props property as an object and can able to bind the props directly to the child. You have some typo mistakes that need to be fixed as well. Here is the working snippet.
<!DOCTYPE html>
<html lang="en">
<head>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
</head>
<body>
<div id="parentComponent">
<child-component v-bind:propsdata="parentBackground" v-bind:propsdata2="parentFontStyle"></child-component>
</div>
<script>
Vue.component("child-component", {
template: `<p v-bind:style="[propsdata, propsdata2]">Child componnent Area</p>`,
props: ["propsdata", "propsdata2"]
});
new Vue({
el: "#parentComponent",
data: function() {
return {
parentBackground: {
"background-color": "yellow"
},
parentFontStyle: {
"font-style": "italic"
}
};
}
});
</script>
</body>
</html>

vuejs update component value on button click is not working

I have a header component. i cant able to update value of header component on button click
<!DOCTYPE html>
<html>
<head>
<title>Page Title</title>
</head>
<body>
<header>
<my-component ref="foo"></my-component>
</header>
<div id="app">
<h1>Component Test</h1>
<button v-on:click="test">Button</button>
</div>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>
var MyComponent = Vue.extend({
template: '<div><p>Hello</p><div v-if="islogin">User</div></div>',
data: function () {
return {
islogin: false
};
}
});
var vm = new Vue({
el: '#app',
components: {
'my-component': MyComponent
},
methods: {
test: function () {
this.$refs.foo.islogin = true;
}
}
});
</script>
</body>
</html>
i want to update the islogin to true on button click. Now it shows "TypeError: Cannot set property 'islogin' of undefined" error.
Thanks
Your component 'my-component' is not in the scope of Vuejs. Vue is in the div with the id 'app'. So you can't add others components outside this main div
Put the component inside Vuejs #app scope :
<div id="app">
<header>
<my-component ref="foo"></my-component>
</header>
<h1>Component Test</h1>
<button v-on:click="test">Button</button>
</div>

Vuejs Reactive propery interpolation is not working

I've run into an issue where i'm creating components that are then being applied to the root App - after creating a dynamic child w/ vanilla JS. When i look at the Vue object in the console, message is not present, which i expect it to be - Can anyone tell me why?
Create the App
Dynamically add new DOM element w/ createElement with a {{ message }} property (ex: <div id="test">{{message}}</div>)
Create a custom component using Vue.Component (ex: <custom-component><custom-component> w/ pre-populated {{ messsage }} value test message
Render the Vue w/ the component w/ update props values for {{ message }}
Below is the actual code tested:
import Vue from 'vue/dist/vue.js';
export default {
name: 'app',
components:
{
HelloWorld
},
data()
{
return this;
},
mounted()
{
// #2 Create an Html Target that contains the component's name 'custom-element'
var v = document.createElement('div');
v.setAttribute('id', 'test');
v.innerHTML = '<custom-element></custom-element>';
var $element = this.$el.prepend(v);
// #1 Create a component
var MyComponent = Vue.component(
'custom-element',
{
template: '<div v-bind:id="UID">{{message}}</div>',
prop: ['UUID', 'message'],
data() {
return {
UID: '',
message: 'test message',
}
},
}
);
// #3 Append the component to the Html Target
window.vm = new Vue({
el: '#test',
components: {
'custom-component': MyComponent,
},
beforeCreate() {
return {
UID: 'x7x7x',
message: 'test message update...'
}
},
})
window.console.log(MyComponent);
window.console.log(this);
}
}`
Here's the main index.html:
`<!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=1.0">
<link rel="icon" href="<%= BASE_URL %>favicon.ico">
<title>hello-world</title>
</head>
<body>
<noscript>
<strong>We're sorry but hello-world doesn't work properly without JavaScript enabled. Please enable it to continue.</strong>
</noscript>
<div id="app"></div>
<!-- built files will be auto injected -->
</body>
</html>'
Here's the main.js
'use strict'
import Vue from 'vue'
import App from './App.vue'
import Reaktr from './js/reaktr.js'
Vue.config.productionTip = false
new Vue({
render: h => h(App),
data: {
Reaktr: new Reaktr(),
},
mounted() {
}
}).$mount('#app')
Here's the Helloworld.vue
<template>
<div class="hello">
<h1>{{ msg }}</h1>
</div>
</template>
<script>
export default {
name: 'HelloWorld',
props: {
msg: String
}
}
</script>

Vue - Import components in a multi-page environment

I wish to use Vue.js in a multi-page environment. For this project I can't use webpack or the vue.cli. I have to use basic ways of importing the various libraries and then using them. I'm nearly there but I can't figure out how I can import components. I'm assuming I need to use require.js but I don't know enough to proceed.
This is the main component (index.html):
<!DOCTYPE html>
<html lang='en' class=''>
<head>
<meta charset='UTF-8'><meta name="robots" content="noindex">
<title>Hello</title>
</head><body>
<div id="app">
<p>Hello this is the {{results}} app</p>
<br /><br />
<p>Now it's time for a component to be shown:</p>
<app-my-accordion></app-my-accordion>
</div>
<script src='https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.3/vue.min.js'></script>
<script src='require.js'></script>
<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
<script>
import MyAccordion from 'components/my-accordion.html'; // <--Problem here
new Vue({
el: '#app',
components: {
'app-my-accordion': MyAccordion
},
data() {
return {
results: null
}
},
mounted() {
axios.get("http://myApi")
.then(response => { this.results = response.data.name; console.log(response.data.name); })
}
});
</script>
</body></html>
And then in my my-accordion.html
<template>
<div>And my child's component name is: {{results}}</div>
</template>
<script>
export default {
data() {
return {
results: null
}
},
mounted: function () {
axios.get("http://myOtherApi")
.then(response => { this.results = response.data.name; console.log(response.data.name); })
}
}
</script>
</body></html>

How to load external html file in a template in VueJs

I'm new to vue js.
I'm just creating a simple project where I just include vuejs through CDN. not using node/npm or cli.
I keep all my html markup in single html which looks messy as it grows. I tried to split html to views and want to include it by something analogous to ng-include of angularJs
I have worked in angular previously where there is ng-include to load external html files. I'm looking for something similar to that in vue. the whole point is to split my html files into more maintainable separate files.
have come across <template src="./myfile.html"/> but it doesn't work
Can somebody help me out
It's actually remarkably easy, but you need to keep something in mind. Behind the scenes, Vue converts your html template markup to code. That is, each element you see defined as HTML, gets converted to a javascript directive to create an element. The template is a convenience, so the single-file-component (vue file) is not something you'll be able to do without compiling with something like webpack. Instead, you'll need to use some other way of templating. Luckily there are other ways of defining templates that don't require pre-compiling and are useable in this scenario.
1 - string/template literals
example: template: '<div>{{myvar}}</div>'
2 - render function 🤢
example: render(create){create('div')}
Vue has several other ways of creating templates, but they just don't match the criteria.
here is the example for both:
AddItem.js - using render 😠 functions
'use strict';
Vue.component('add-item', {
methods: {
add() {
this.$emit('add', this.value);
this.value = ''
}
},
data () {
return {
value: ''
}
},
render(createElement) {
var self = this
return createElement('div', [
createElement('input', {
attrs: {
type: 'text',
placeholder: 'new Item'
},
// v-model functionality has to be implemented manually
domProps: {
value: self.value
},
on: {
input: function (event) {
self.value = event.target.value
// self.$emit('input', event.target.value)
}
}
}),
createElement('input', {
attrs: {
type: 'submit',
value: 'add'
},
on: {
click: this.add
}
}),
])
}
});
ListItem.js - using template literals (back-ticks)
'use strict';
Vue.component('list-item', {
template: `<div class="checkbox-wrapper" #click="check">
<h1>{{checked ? '☑' : '☐'}} {{ title }}</h1>
</div>`,
props: [
'title',
'checked'
],
methods: {
check() {
this.$emit('change', !this.checked);
}
}
});
and the html
<!DOCTYPE html>
<html lang="en">
<head>
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.4.0/vue.js"></script>
<script src="ListItem.js"></script>
<script src="AddItem.js"></script>
</head>
<body>
<div id="app">
<add-item #add='list.push({title:arguments[0], checked: false})'></add-item>
<list-item v-for="(l, i) in list" :key="i" :title="l.title" :checked="l.checked" #change="l.checked=arguments[0]"></list-item>
</div>
<script type="text/javascript">
new Vue({
el: '#app',
data: {
newTitle: '',
list: [
{ title: 'A', checked: true },
{ title: 'B', checked: true },
{ title: 'C', checked: true }
]
}
});
</script>
</body>
</html>
TL; DR;
See it in action at : https://repl.it/OEMt/9
You cant. You must use async components - read guide here
Actually you can. This is kinda easy. Depends on your needs and situation. However, this code is NOT technically correct, however it will explain to you how it might work, gives you massive freedom and makes your original vue instance smaller.
To make this work, you will need vue router (cdn is ok) and in this case axios or fetch (if you dont care about supporting older browsers).
The only downfall in my opinion is that in content files you will need to add additional call parameter $parent . This will force vue to work.
index
<div id="app">
<router-link v-for="route in this.$router.options.routes" :to="route.path" :key="route.path">{{ route.name }}</router-link>
<section style="margin-top:50px;">
<component :is="magician && { template: magician }" />
</section>
</div>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script src="https://unpkg.com/vue-router/dist/vue-router.js"></script>
<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
<script>
const viewer = axios.create({ baseURL: location.origin });
const routes = [
{"name":"Hello","slug":"hello","path":"/lol/index.html"},
{"name":"Page One","slug":"page_one","path":"/lol/page-one.html"},
{"name":"Page Two","slug":"page_two","path":"/lol/page-two.html"}
];
const app = new Vue({
router,
el: '#app',
data: {
magician: null,
},
watch: {
$route (to) {
this.loader(to.path);
}
},
mounted() {
this.loader(this.$router.currentRoute.path);
},
methods: {
viewer(opt) {
return viewer.get(opt);
},
loader(to) {
to == '/lol/index.html' ? to = '/lol/hello.html' : to = to;
this.viewer(to).then((response) => {
this.magician = response.data;
}).catch(error => {
alert(error.response.data.message);
})
},
huehue(i) {
alert(i);
}
}
});
</script>
hello.html content
<button v-on:click="$parent.huehue('this is great')">Button</button>
page-one.html content
<select>
<option v-for="num in 20">{{ num }}</option>
</select>
page-two.html content
// what ever you like
router explanation
To make this work perfectly, you will need to find a correct way to configure your htaccess to render everything if current page after first view is not index. Everything else should work fine.
As you can see, if it is index, it will load hello content file.
I faced the same issue and this is how I solved it , I also made a video about this question https://www.youtube.com/watch?v=J037aiMGGAw
create a js file ,for your component (logic) let's call it "aaaa.vue.js"
create an HTML file for your template that will be injected in your "aaaa.vue.js" and let's call it "aaaa.html"
Component file (Logic file javascript)
const aaaa = {
name:"aaaa",
template: ``,
data() {
return {
foo:"aaaa"
};
},
methods: {
async test() {
alert(this.foo)
},
},
};
Template file (HTML)
<!--template file-->
<div>
<button #click="test" > click me plz </button>
</div>
index.html
<html>
<head>
<title>my app</title>
</head>
<body>
<div id="app" class="main-content col-12">
<aaaa></aaaa>
</div>
</body>
</html>
<script src="axios.min.js"></script>
<script src="vue.js"></script>
<!-- load js file (logic) -->
<script src="aaaa.vue.js"></script>
<script>
document.addEventListener("DOMContentLoaded", async function () {
//register components
let html = await axios.get("aaaa.html"); // <---- Load HTML file
aaaa.template = html.data;
Vue.component("aaaa", aaaa);
new Vue({
el: "#app",
name: "main",
//... etc
});
});
</script>
Update :
I also created an example on github to see it in action
https://github.com/nsssim/Vue-CDN-load-component
Sure you can, this is the way we are doing it in all our components of our app.
<template src="../templates/the_template.html"></template>
<script>
export default {
name: 'ComponentName',
props: {},
computed: {},
methods: {},
};
</script>
<style lang="scss">
#import '../styles/myscss_file';
</style>
Will need to add
runtimeCompiler: true
to your vue.config.js file. That's it.