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Vue v-for Directive

With normal JavaScript you might want to create HTML elements based on an array. You use a for-loop, and inside you need to create the elements, adjust them, and then add each element to your page. And these elements will not react to a change in the array.

With Vue you start with the HTML element you want to create into a list, with v-for as an attribute, refer to the array inside the Vue instance, and let Vue take care of the rest. And the elements created with v-for will automatically update when the array changes.

List Rendering

List rendering in Vue is done by using the v-for directive, so that several HTML elements are created with a for-loop.

Below are three slightly different examples where v-for is used.

Example

Display a list based on the items of an array.

<ol>
  <li v-for="x in manyFoods">{{ x }}</li>
</ol>
Try it Yourself »

Loop Through an Array

Loop through an array to display different images:

Example

Show images of food, based on an array in the Vue instance.

<div>
  <img v-for="x in manyFoods" v-bind:src="x">
</div>
Try it Yourself »

Loop Through Array of Objects

Loop through an array of objects and display the object properties:

Example

Show both images and names of different types of food, based on an array in the Vue instance.

<div>
  <figure v-for="x in manyFoods">
    <img v-bind:src="x.url">
    <figcaption>{{ x.name }}</figcaption>
  </figure>
</div>
Try it Yourself »

Get the index

The index number of an array element can be really useful in JavaScript for-loops. Luckily we can get the index number when using v-for in Vue as well.

To get the index number with v-for we need to give two comma separated words in parentheses: the first word will be the array element, and the second word will be the index of that array element.

Example

Show index number and food name of elements in the 'manyFoods' array in the Vue instance.

<p v-for="(x, index) in manyFoods">
  {{ index }}: "{{ x }}" <br>
</p>
Try it Yourself »

We can also display both array element index and information from the array element itself, if the array elements are objects:

Example

Show both the array element index number, and text from the objects in the 'manyFoods' array.

<p v-for="(x, index) in manyFoods">
  {{ index }}: "{{ x.name }}", url: "{{ x.url }}" <br>
</p>
Try it Yourself »

Vue Exercises

Test Yourself With Exercises

Exercise:

List rendering in Vue can be done so that several HTML elements are created based on an array.

What Vue directive makes this possible?

v-

Start the Exercise



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