I'm just beginning to learn view and am practicing using it, but I keep getting the errors "vue was used before it was defined" and "Vue is not defined". Ive uploaded what I have in my html and my js file.
var app = new Vue();
app({
el: '#app',
data: {
product: 'Socks'
}
});
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Vue practice</title>
<script src="https://cdn.jsdelivr.net/npm/vue#2.5.13/dist/vue.js"></script>
</head>
<body>
<div id="app">
<div class="product-image">
<img src="" />
</div>
<div class="product-info">
<h1>{{ product }}</h1>
</div>
</div>
</body>
</html>
You just need to put those parameters into your Vue() constructor
var app = new Vue({
el: '#app',
data: {
product: 'Socks'
}
});
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Vue practice</title>
<script src="https://cdn.jsdelivr.net/npm/vue#2.5.13/dist/vue.js"></script>
</head>
<body>
<div id="app">
<div class="product-image">
<img src="" />
</div>
<div class="product-info">
<h1>{{ product }}</h1>
</div>
</div>
</body>
</html>
Related
I wan't to use Framework7 without ReactJS or Vue. I wanna use pure JS. But when I try to show a dialog, I get a console error:
Uncaught TypeError: n is undefined
Thats my JavaScript code
var app = new Framework7({
root: '#app',
name: 'My App',
theme: 'ios',
domCache: true
});
var mainView = app.views.create('.view-main');
$('.open-alert').on('click', function () {
window.app.dialog.alert('Oops! Testing alert.');
});
and that is the HTML Part:
<!DOCTYPE html>
<html lang="de-DE">
<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="theme-color" content="#2196f3">
<meta name="viewport" content="width=device-width, initial-rotate=1.0" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link rel="stylesheet" type="text/css" href="https://v5.framework7.io/packages/core/css/framework7.bundle.min.css" />
<link rel="stylesheet" type="text/css" href="css/style.css" />
</head>
<body>
<div id="phone">
<div id="app">
<div class="statusbar"></div>
<div class="view view-main">
<div data-name="home" class="page">
<button class="col button button-fill open-alert">Alert</button>
</div>
</div>
</div>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script type="text/javascript" src="https://v5.framework7.io/packages/core/js/framework7.bundle.min.js"></script>
<script type="text/javascript" src="js/app.js"></script>
</body>
</html>
I searched for some examples, but nothing are work. Maybee I need to add something more?
I am using local vue.js These are my files.
index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=Edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<script src="res/vue.js"></script>
<script src="res/vue-router.js"></script>
<title>Vue</title>
</head>
<body>
<div id="app" ></div>
<script type="module" src="App.js"></script>
</body>
</html>
App.js
import Vue from './res/vue.js'
import App from './App.vue'
Vue.config.productionTip = false
new Vue({
render: h => h(App),
}).$mount('#app')
App.vue
<template>
<div>
{{foo}}
</div>
</template>
<script>
export default {
name: 'App',
data: function(){
return{
foo:'Hello vue'
}
}
}
</script>
<style>
</style>
But my index.html shows nothing
You mount your vue instance at the div node which id is "app", but i can't find the "#app" node, so you can resolve that by insert the "#app" node .
index.html:
<body>
<div id="app"></div>
<script type="module" src="App.js"></script>
</body>
Like the Steven suggested you have to compile vue components.
If you dont want to do it that way, below is the the easiet way.
Vue.createApp({
data() {
return {
foo: 'Hello vue',
};
},
}).mount('#app');
<!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" />
<script src="https://unpkg.com/vue#next"></script>
<!-- <script src="res/vue-router.js"></script> -->
<title>Vue</title>
</head>
<body>
<div id="app">{{foo}}</div>
<script type="module" src="App.js"></script>
</body>
</html>
You probably need to build it with vue-cli to create a SPA(Single page Application) for your android application
Hi is your import correct? from node_modules it should be import Vue from 'vue' and not import Vue from './res/vue.js' try it
I start to learn vuejs and I can't explain this bug. The vuejs mustache syntax doesn't work in this exemple :
the html file
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Vue Basics</title>
<link
href="https://fonts.googleapis.com/css2?family=Jost:wght#400;700&display=swap"
rel="stylesheet"
/>
<link rel="stylesheet" href="styles.css" />
<script src="https://unpkg.com/vue#next" defer></script>
<script src="app.js" defer></script>
</head>
<body>
<header>
<h1>test mustache syntax</h1>
</header>
<section id="user-goal">
<h2>titre</h2>
<p>{{ test }}</p>
</section>
</body>
</html>
the js file
const app = Vue.createApp({
data() {
return {
test: 'bonjour'
};
}
});
app.mount('#user-goal');
Can someone tell me why i get this result?
I need to change the {{message}} on the click of a button with a alert box. No alert box is showing and the message is also not changing.
I am new to vue world, the other examples are working but there is a problem with this file only.
I have used the directive "v-once" on the message tag inside the <h1> tag, the <h2> doesn't have "v-once".
Please reply me what I have done wrong in the code below.
<!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">
<title>Vue.js Tutorial | Directives</title>
<script src="https://unpkg.com/vue#2.0.3/dist/vue.js"></script>
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
</head>
<body>
<div id="app">
<h1 v-once>{{message}}</h1>
<h2>{{message}}</h2>
<h5 v-show="viewed" v-html="intro"></h5>
</div>
<button #click="rewrite" type="button" name="button" >Change</button>
</body>
<script>
var app = new Vue({
el: '#app',
data: {
message: 'Hello Vue World',
intro: 'Welcome to the Tutorial <small>It is all about Vue.js</small>',
viewed: true,
},
methods: {
rewrite: function () {
alert('Button Clicked!'),
this.message = 'Bye vue World!!!',
},
},
});
</script>
</html>
The problem with your code is that you put the button outside of div#app so the Vue instance doesn't affect it. Just move the button to be inside div#app and it'll work
<body>
<div id="app">
<h1 v-once>{{message}}</h1>
<h2>{{message}}</h2>
<h5 v-show="viewed" v-html="intro"></h5>
// move button into here
<button #click.prevent="rewrite" type="button" name="button">Change</button>
</div>
</body>
<!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">
<title>Vue.js Tutorial | Directives</title>
<script src="https://cdn.jsdelivr.net/npm/vue#2.6.11"></script>
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css"
integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
</head>
<body>
<div id="app">
<h1 v-once>{{message}}</h1>
<h2>{{message}}</h2>
<h5 v-show="viewed" v-html="intro"></h5>
<button #click.prevent="rewrite" type="button" name="button">Change</button>
</div>
</body>
<script>
var app = new Vue({
el: '#app',
data: {
message: 'Hello Vue World',
intro: 'Welcome to the Tutorial <small>It is all about Vue.js</small>',
viewed: true,
},
methods: {
rewrite: function() {
alert('Button Clicked!')
this.message = 'Bye vue World!!!'
},
},
});
</script>
</html>
I'm having an issue with ng-repeat on an array of objects:
dummy.json
[
{"name":"alpha", "data":[{"name":"Unit 1", "prereqs":[]}]},
{"name":"beta", "data":[{"name":"Unit 1", "prereqs":[]}]}
]
I can get the number of objects({{factions.length}} or individual item {{factions[0].name}}) and print them individually, but the ng-repeat doesn't create multiple options in the select. I see some other versions of the same question, but they aren't resolved.
I'm including the controller in the body. The scope variable is available, but I'm missing something... Please take a look. Thanks in advance.
tree.js
'use strict';
angular.module('tree',[])
.controller('treeCtrl', function ($scope,$http) {
$scope.factions = [
{"name":"alpha", "data":[{"name":"Unit 1", "prereqs":[]}]},
{"name":"beta", "data":[{"name":"Unit 1", "prereqs":[]}]}
];
//$http.get('/dummy.json')
// .success(function(data){
// console.log(data);
// $scope.factions = data;
// })
});
<!DOCTYPE html>
<html xmlns:ng="http://angularjs.org" id="ng-app" ng-app="tree">
<head>
<meta content="IE=edge" http-equiv="X-UA-Compatible">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Trees</title>
<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.1.0/css/bootstrap.min.css">
<!-- <link rel="stylesheet" href="app/styles/techtree.css">
<link href="//maxcdn.bootstrapcdn.com/font-awesome/4.1.0/css/font-awesome.min.css" rel="stylesheet"> -->
</head>
<body ontouchstart data-ng-controller="treeCtrl">
<div class="section">
<div class="container">
<form>
<div class="row">
<div class="col-sm-4">
<div class="form-group">
<label for="factionSelect">Faction {{factions.length}}</label>
<select id="factionSelect" class="form-control">
<option ng-repeat"faction in factions" value="{{$index}}">{{faction.name}}</option>
</select>
</div>
</div>
</div>
</form>
</div>
{{factions[1].name}}
</div>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.2.1/angular.min.js"></script>
<script src='//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js'></script>
</body>
</html>
You are missing the = character between ng-repeat attribute and its value.
'use strict';
angular.module('tree',[])
.controller('treeCtrl', function ($scope,$http) {
$scope.factions = [
{"name":"alpha", "data":[{"name":"Unit 1", "prereqs":[]}]},
{"name":"beta", "data":[{"name":"Unit 1", "prereqs":[]}]}
];
//$http.get('/dummy.json')
// .success(function(data){
// console.log(data);
// $scope.factions = data;
// })
});
<!DOCTYPE html>
<html xmlns:ng="http://angularjs.org" id="ng-app" ng-app="tree">
<head>
<meta content="IE=edge" http-equiv="X-UA-Compatible">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Trees</title>
<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.1.0/css/bootstrap.min.css">
<!-- <link rel="stylesheet" href="app/styles/techtree.css">
<link href="//maxcdn.bootstrapcdn.com/font-awesome/4.1.0/css/font-awesome.min.css" rel="stylesheet"> -->
</head>
<body ontouchstart data-ng-controller="treeCtrl">
<div class="section">
<div class="container">
<form>
<div class="row">
<div class="col-sm-4">
<div class="form-group">
<label for="factionSelect">Faction {{factions.length}}</label>
<select id="factionSelect" class="form-control">
<option ng-repeat="faction in factions" value="{{$index}}">{{faction.name}}</option>
</select>
</div>
</div>
</div>
</form>
</div>
{{factions[1].name}}
</div>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.2.1/angular.min.js"></script>
<script src='//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js'></script>
</body>
</html>