Vue Forms

❮ Previous Next ❯

Vue gives us an easy way to improve the user experience with forms by adding extra functionality like responsiveness and form validation.

Vue uses the v-model directive when handling forms.

Our First Form with Vue

Lets start with a simple shopping list example to see how Vue can be used when creating a form.

For more information about forms in HTML, with related tags and attributes, see our HTML Forms tutorial.

1. Add standard HTML form elements:

2. Create the Vue instance with the current item name, number and the shopping list, and use v-model to connect our inputs to it.

<div id="app">
<form>
<p>Add item</p>
<p>Item name: <input type="text" required v-model="itemName"></p>
<p>How many: <input type="number" v-model="itemNumber"></p>
<button type="submit">Add item</button>
</form>
</div>

<script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>
<script>
const app = Vue.createApp({
data() {
return {
itemName: null,
itemNumber: null,
shoppingList: [
{ name: 'Tomatoes', number: 5 }
]
}
}
})
app.mount('#app')
</script>

3. Call the method to add an item to the shopping list, and prevent the default browser refresh on submit.

4. Create the method that adds the item to the shopping list, and clears the form:

methods: {
addItem() {
let item = {
name: this.itemName,
number: this.itemNumber
}
this.shoppingList.push(item);
this.itemName = null
this.itemNumber = null
}
}

5. Use v-for to show an automatically updated shopping list below the form:

<p>Shopping list:</p>
<ul>
<li v-for="item in shoppingList">{{item.name}}, {{item.number}}</li>
</ul>

Below is the final code for our first Vue form.

Example

In this example we can add new items to a shopping list.

<div id="app">
<form v-on:submit.prevent="addItem">
<p>Add item</p>
<p>Item name: <input type="text" required v-model="itemName"></p>
<p>How many: <input type="number" v-model="itemNumber"></p>
<button type="submit">Add item</button>
</form>

<p>Shopping list:</p>
<ul>
<li v-for="item in shoppingList">{{item.name}}, {{item.number}}</li>
</ul>
</div>

<script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>
<script>
const app = Vue.createApp({
data() {
return {
itemName: null,
itemNumber: null,
shoppingList: [
{ name: 'Tomatoes', number: 5 }
]
}
},
methods: {
addItem() {
let item = {
name: this.itemName,
number: this.itemNumber
}
this.shoppingList.push(item)
this.itemName = null
this.itemNumber = null
}
}
})
app.mount('#app')
</script>

Try it Yourself »

Notice the two-way binding v-model provides in the example above:

v-model updates the Vue instance data when the HTML input change
v-model also updates the HTML input when the Vue instance data changes

To learn more about v-model and see more form examples, click 'Next'.

❮ Previous Next ❯