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Vue Tutorial

Vue HOME Vue Intro Vue Directives Vue v-bind Vue v-if Vue v-show Vue v-for Vue Events Vue v-on Vue Methods Vue Event Modifiers Vue Forms Vue v-model Vue CSS Binding Vue Computed Properties Vue Watchers Vue Templates

Scaling Up

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Vue Reference

Vue Built-in Attributes Vue Built-in Components Vue Built-in Elements Vue Component Instance Vue Directives Vue Instance Options Vue Lifecycle Hooks

Vue Examples

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Vue Directives

Vue directives are special HTML attributes with the prefix v- that give the HTML tag extra functionality.

Vue directives connect to the Vue instance to create dynamic and reactive user interfaces.

With Vue, creating responsive pages is much easier and requires less code compared to traditional JavaScript methods.

Different Vue Directives

The different Vue directives we use in this tutorial are listed below.

DirectiveDetails
v-bind Connects an attribute in an HTML tag to a data variable inside the Vue instance.
v-if Creates HTML tags depending on a condition. Directives v-else-if and v-else are used together with the v-if directive.
v-show Specifies if an HTML element should be visible or not depending on a condition.
v-for Creates a list of tags based on an array in the Vue instance using a for-loop.
v-on Connects an event on an HTML tag to a JavaScript expression or a Vue instance method. We can also define more specifically how our page should react to a certain event by using event-modifiers.
v-model Used in HTML forms with tags like <form>, <input> and <button>. Creates a two way binding between an input element and a Vue instance data property.

Example: The v-bind Directive

The browser finds what class to connect the <div> element to from the Vue instance.

<!DOCTYPE html>
<html lang="en">
<head>
  <style>
    .pinkBG {
      background-color: lightpink;
    }
  </style>
</head>
<body>

  <div id="app">
    <div v-bind:class="vueClass"></div>
  </div>

  <script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>
  <script>
    const app = Vue.createApp({
      data() {
        return {
          vueClass: "pinkBG"
        }
      }
    })
    app.mount('#app')
  </script>
</body>
</html>
Try it Yourself ยป

Note: The example above could be written much simpler without the Vue code, but be patient. The real benefits of Vue can be seen in later examples when we make pages that are responsive.


Learning Vue at W3Schools

When learning Vue at W3Schools.com, you can use our "Try it Yourself" tool, which shows both the code and the result. This will make it easier for you to understand every part as we move forward.

Click 'Next' to continue the tutorial.


Vue Exercises

Test Yourself With Exercises

Exercise:

Fill in the missing part to connect the class attribute to the "myClass" data property.

<p :class="myClass"></p>

Start the Exercise