Vuetify Alert: How to Notify Users with Alerts

We use an alert to pass on important information to users by using contextual icons and colors. The icon and color match the type of message it conveys to the user. In this article, we’re going to learn how to create and customize alert notifications with the Vuetify alert component.

The Vuetify Alert Component (v-alert)

Vuetify provides the v-alert component for creating alerts:

<template>
  <v-app>
    <div class="d-flex justify-center ma-4">
      <v-alert> Alert Component </v-alert>
    </div>
  </v-app>
</template>

<script>
export default {
  name: 'App',
};
</script>

Using v-alert without any props creates a simple alert containing the text, without any color, border or icon:

A simple Vuetify alert component.

Vuetify Alert Colors

The color prop of v-alert allows us to customize the color of an alert component.

<template>
  <v-app>
    <div class="d-flex justify-center ma-4">
      <v-col sm="6">
        <v-alert color="indigo" dark> Alert Component </v-alert>
      </v-col>
    </div>
  </v-app>
</template>

<script>
export default {
  name: 'App',
};
</script>
Customizing the color of the Vuetify alert component.

Vuetify Alert Border

The border prop adds a border to one of the 4 sides of the alert. They are four possible values for each of the sides: top, bottom, left, and right.

<template>
  <v-app>
    <div class="d-flex justify-center ma-4">
      <v-col sm="6">
        <v-alert border="top" color="red lighten-2" dark>
          I'm an alert with a top border and red color
        </v-alert>
        <v-alert border="right" color="green" dark>
          I'm an alert with a right border and green color
        </v-alert>
        <v-alert border="bottom" color="pink darken-1" dark>
          I'm an alert with a bottom border and pink color
        </v-alert>
        <v-alert border="left" color="indigo" dark>
          I'm an alert with a left border and indigo color
        </v-alert>
      </v-col>
    </div>
  </v-app>
</template>

<script>
export default {
  name: 'App',
};
</script>
Alert components with borders.

Vuetify Alert Colored Border

The colored-prop will remove the alert background in order to emphasize the border, whose color is set to the value of the color prop:

<template>
  <v-app>
    <div class="d-flex justify-center ma-4">
      <v-col sm="6">
        <v-alert border="left" color="indigo" colored-border elevation="2">
          An alert with a colored border
        </v-alert>
      </v-col>
    </div>
  </v-app>
</template>

<script>
export default {
  name: 'App',
};
</script>
An alert with a colored border.

Dense Alert

Setting the dense prop to true on the v-alert will make it more compact by decreasing its height.

<template>
  <v-app>
    <div class="d-flex justify-center ma-4">
      <v-col sm="6">
        <v-alert dense type="info">
          Dense alert of type info
        </v-alert>
      </v-col>
    </div>
  </v-app>
</template>

<script>
export default {
  name: 'App',
};
</script>
A dense alert.

When a border is set, the border thickness will be decreased to stay consistent with the dense style:

<template>
  <v-app>
    <div class="d-flex justify-center ma-4">
      <v-col sm="6">
        <v-alert dense type="info" border="right">
          Dense alert of type info
        </v-alert>
      </v-col>
    </div>
  </v-app>
</template>

<script>
export default {
  name: 'App',
};
</script>
A dense alert with a border.

Vuetify Alert Dismissable

The dimissable prop adds a close icon button at the end of the alert component.

<template>
  <v-app>
    <div class="d-flex justify-center ma-4">
      <v-col sm="6">
        <v-alert border="top" color="green" dismissible dark>
          Dismissable alert
        </v-alert>
      </v-col>
    </div>
  </v-app>
</template>

<script>
export default {
  name: 'App',
};
</script>
A dismissable alert.

Clicking the close button will set the alert value to false, which will hide the alert:

The alert is no longer visible.

Vuetify Alert v-model

We can also directly control the visibility of the alert from code by using v-model to create a two-way binding between a variable and the alert value.

To see how to do this in practice, let’s create a button below the now hidden alert from our previous code sample. We’ll also set up the two-way binding between an alert variable and the visibility of the alert.

<template>
  <v-app>
    <div class="d-flex justify-center ma-4">
      <v-col sm="6">
        <v-alert border="top" color="green" dismissible dark v-model="alert">
          Dismissable alert
        </v-alert>
      </v-col>
    </div>
    <div class="d-flex justify-center ma-4">
      <v-btn color="primary" @click="alert = true">Reset</v-btn>
    </div>
  </v-app>
</template>

<script>
export default {
  name: 'App',
  data: () => ({
    alert: true,
  }),
};
</script>
A button below the now hidden alert.
A button below the now hidden alert.

Clicking the button will set alert to true, which will restore the visibility of the alert.

Restoring the alert visibility.
Restoring the visibility of the alert.

Alert Icons

We can include an icon at the beginning of an alert with the icon prop.

<template>
  <v-app>
    <div class="d-flex justify-center ma-4">
      <v-col sm="6">
        <v-alert border="top" color="red accent-2" dark icon="mdi-star">
          An alert with an icon
        </v-alert>
      </v-col>
    </div>
  </v-app>
</template>

<script>
export default {
  name: 'App',
};
</script>
An alert with an icon.

Vuetify Alert Elevation

We can customize the amount of elevation an alert component has using the elevation prop. This prop can take any value between 0 and 24.

<template>
  <v-app>
    <div class="d-flex justify-center ma-4">
      <v-col sm="6">
        <v-alert border="top" color="orange" colored-border elevation="5">
          Elevated alert
        </v-alert>
      </v-col>
    </div>
  </v-app>
</template>

<script>
export default {
  name: 'App',
};
</script>
An alert with elevation.

Vuetify Alert Outlined

Setting the outlined prop to true will display the outlined variant of an alert. This outlined style makes the alert background transparent and sets the color of its border and text to the value of the color prop.

<template>
  <v-app>
    <div class="d-flex justify-center ma-4">
      <v-col sm="6">
        <v-alert color="green" outlined> Outlined alert </v-alert>
      </v-col>
    </div>
  </v-app>
</template>

<script>
export default {
  name: 'App',
};
</script>
An outlined alert.

Vuetify Alert Prominent

The prominent prop makes the alert more pronounced by increasing the height and applying a halo to the icon:

<template>
  <v-app>
    <div class="d-flex justify-center ma-4">
      <v-col sm="6">
        <v-alert color="red accent-2" prominent icon="mdi-school" dark>
          Prominent alert
        </v-alert>
      </v-col>
    </div>
  </v-app>
</template>

<script>
export default {
  name: 'App',
};
</script>
A prominent alert.

Text Alert

The text alert variant has a reduced background opacity. We can set an alert to this alternative style with the text prop:

<template>
  <v-app>
    <div class="d-flex justify-center ma-4">
      <v-col sm="6">
        <v-alert color="teal" text> Text alert </v-alert>
      </v-col>
    </div>
  </v-app>
</template>

<script>
export default {
  name: 'App',
};
</script>
A text alert.

Vuetify Alert Shaped

Setting the shaped prop to true on an alert will add a border-radius at the top-left and bottom-right of the alert:

<template>
  <v-app>
    <div class="d-flex justify-center ma-4">
      <v-col sm="6">
        <v-alert color="blue" shaped dark> Shaped alert </v-alert>
      </v-col>
    </div>
  </v-app>
</template>

<script>
export default {
  name: 'App',
};
</script>
A shaped alert.

Vuetify Alert Custom Transitions

We can customize the transition an alert shows when toggling its visibility, using the transition prop. For example, in the code below we set the transition prop to scale-transition, which will make the alert display a scale transition when it is being hidden or shown.

<template>
  <v-app>
    <div class="d-flex justify-center ma-4">
      <v-btn color="primary" @click="alert = !alert"> Toggle </v-btn>
    </div>
    <div class="d-flex justify-center ma-4">
      <v-col sm="6">
        <v-alert
          color="indigo"
          dark
          transition="scale-transition"
          v-model="alert"
        >
          Shaped alert
        </v-alert>
      </v-col>
    </div>
  </v-app>
</template>

<script>
export default {
  name: 'App',
  data: () => ({
    alert: false,
  }),
};
</script>

Vuetify Alert Type

v-alert comes with a type prop which provides 4 styles that modify the icon and color of the alert. These styles are success, info, warning, and error.

<template>
  <v-app>
    <div class="d-flex justify-center ma-4">
      <v-col sm="6">
        <v-alert type="success"> I'm a success alert. </v-alert>
        <v-alert type="info"> I'm an info alert. </v-alert>
        <v-alert type="warning"> I'm a warning alert. </v-alert>
        <v-alert type="error"> I'm an error alert. </v-alert>
      </v-col>
    </div>
  </v-app>
</template>

<script>
export default {
  name: 'App',
};
</script>
Alert components of different types.

Summary

An alert is useful for conveying important information to our users using contextual icons and colors. Vuetify provides the v-alert component for creating and customizing alerts.



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