basic introduction of
Benson
What is Vue.js?
What is framework?
Types of Frameworks
-
Web Application Frameworks
-
DataScience Frameworks
-
Mobile Development Frameworks
Common web Application Frameworks
-
Angular
-
React
-
Vue
Why Vue.js?
-
The small size of the application.
-
Higher performance.
-
Learning Ease.
-
Improved Documentation.
-
Progressive.
-
…etc
Progressive?
Let's get starteDdddd!
under your home directory
mkdir vue-session
cd vue-session
touch myFirstVue.html
code .
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
</head>
<body>
<div id="app">{{ message }}</div>
<script>
var app = new Vue({
el: "#app",
data: {
message: "Hello Vue!",
},
});
</script>
</body>
</html>
The data and the DOM are now linked, and everything is now reactive.
U can simply change the value by enter
app.message = "?"
in the browser’s JavaScript console & c what's the difference.
Directives are prefixed with v- to indicate that they are special attributes provided by Vue.
v-bind
keep this element’s attribute up-to-date with the property on the Vue instance.
<div id="app-2">
<span v-bind:title="message">
Hover your mouse over me for a few seconds
to see my dynamically bound title!
</span>
</div>
var app2 = new Vue({
el: '#app-2',
data: {
message: 'You loaded this page on ' + new Date().toLocaleString()
}
})
app2.message = 'some new message'
v-if
<div id="app-3">
<span v-if="seen">Now you see me</span>
</div>
var app3 = new Vue({
el: '#app-3',
data: {
seen: true
}
})
app3.seen = false
v-for
<div id="app-4">
<ol>
<li v-for="todo in todos">
{{ todo.text }}
</li>
</ol>
</div>
var app4 = new Vue({
el: '#app-4',
data: {
todos: [
{ text: 'Learn JavaScript' },
{ text: 'Learn Vue' },
{ text: 'Build something awesome' }
]
}
})
app4.todos.push({ text: 'New item' })
Handling User Input
v-on
<div id="app-5">
<p>{{ message }}</p>
<button v-on:click="reverseMessage">Reverse Message</button>
</div>
var app5 = new Vue({
el: '#app-5',
data: {
message: 'Hello Vue.js!'
},
methods: {
reverseMessage: function () {
this.message = this.message.split('').reverse().join('')
}
}
})
v-model
<div id="app-6">
<p>{{ message }}</p>
<input v-model="message">
</div>
var app6 = new Vue({
el: '#app-6',
data: {
message: 'Hello Vue!'
}
})
Try to type something in.
project time
STEP 1
use v-model to insert the memo
STEP 2
use v-for to do the list
STEP 3
use html button to add memo into list
STEP 4
use v-bind to bind the memo with color
STEP 5
use v-model to insert the color
STEP 6
use html button to set the color and change the color
STEP 7
use v-if to show the list or hide the list
STEP 8
use the pop method to pop the memo u may misinsert
DONE
Composing with Components
// Define a new component called todo-item
Vue.component('todo-item', {
template: '<li>This is a todo</li>'
})
var app = new Vue(...)
in template:
<ol>
<!-- Create an instance of the todo-item component -->
<todo-item></todo-item>
</ol>
use "prop" to pass data from parent scope into child components
in js:
Vue.component('todo-item', {
props: ['todo'],
template: '<li>{{ todo.text }}</li>'
})
var app7 = new Vue({
el: '#app-7',
data: {
groceryList: [
{ id: 0, text: 'Vegetables' },
{ id: 1, text: 'Cheese' },
{ id: 2, text: 'Whatever else humans are supposed to eat' }
]
}
})
in html:
<div id="app-7">
<ol>
<!--
Now we provide each todo-item with the todo object
it's representing, so that its content can be dynamic.
We also need to provide each component with a "key",
which will be explained later.
-->
<todo-item
v-for="item in groceryList"
v-bind:todo="item"
v-bind:key="item.id"
></todo-item>
</ol>
</div>
In most of the Vue.js project:
<div id="app">
<app-nav></app-nav>
<app-view>
<app-sidebar></app-sidebar>
<app-content></app-content>
</app-view>
</div>
now , try to use component to rebuild the list :d