Vue.js

Let’s start with a quick tour of Vue’s data binding features. If you are more interested in a high-level overview first, check out this blog post.

The easiest way to try out Vue.js is using the JSFiddle Hello World example. Feel free to open it in another tab and follow along as we go through some basic examples. If you prefer downloading / installing from a package manager, check out the Installation page.

Hello World

<div id="app">
  {{ message }}
</div>

new Vue({
  el: '#app',
  data: {
    message: 'Hello Vue.js!'
  }
})

Two-way Binding

<div id="app">
  <p>{{ message }}</p>
  <input v-model="message">
</div>

new Vue({
  el: '#app',
  data: {
    message: 'Hello Vue.js!'
  }
})

Render a List

<div id="app">
  <ul>
    <li v-for="todo in todos">
      {{ todo.text }}
    </li>
  </ul>
</div>

new Vue({
  el: '#app',
  data: {
    todos: [
      { text: 'Learn JavaScript' },
      { text: 'Learn Vue.js' },
      { text: 'Build Something Awesome' }
    ]
  }
})

Handle User Input

<div id="app">
  <p>{{ message }}</p>
  <button v-on:click="reverseMessage">Reverse Message</button>
</div>

new Vue({
  el: '#app',
  data: {
    message: 'Hello Vue.js!'
  },
  methods: {
    reverseMessage: function () {
      this.message = this.message.split('').reverse().join('')
    }
  }
})

All Together Now

<div id="app">
  <input v-model="newTodo" v-on:keyup.enter="addTodo">
  <ul>
    <li v-for="todo in todos">
      <span>{{ todo.text }}</span>
      <button v-on:click="removeTodo($index)">X</button>
    </li>
  </ul>
</div>

new Vue({
  el: '#app',
  data: {
    newTodo: '',
    todos: [
      { text: 'Add some todos' }
    ]
  },
  methods: {
    addTodo: function () {
      var text = this.newTodo.trim()
      if (text) {
        this.todos.push({ text: text })
        this.newTodo = ''
      }
    },
    removeTodo: function (index) {
      this.todos.splice(index, 1)
    }
  }
})

I hope this gives you a basic idea of how Vue.js works. I’m sure you also have many questions now - read along, and we will cover them in the rest of the guide.