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Vue v-show Directive


Example

Using the v-show directive to conditionally toggle the visibility of a <div> element, depending on the value of 'showDiv'.

<div v-show="showDiv">This div tag can be hidden</div>
Try it Yourself »

See more examples below.


Definition and Usage

The v-show directive is used to conditionally toggle the visibility of an element.

When the expression used by v-show evaluates to 'false', the CSS display property is set to 'none', and otherwise the CSS display property falls back to the default value.

An element with v-show is mounted once and remain in the DOM, only its visibility is toggled with v-show.

v-show triggers transition classes and events when used with the built-in <Transition> component.

Lifecycle hooks like mounted/unmounted, or activated/deactivated are not triggered when the visibility of an object is toggled with v-show.


v-show vs. v-if

The v-show and v-if directives are apparently quite similar, because they can both toggle an element so that it is displayed or not, but here are some differences:

v-show v-if
Creates and destroys an element in the DOM when it is toggled? no yes
Triggers lifecycle hooks mounted/unmounted when an element is toggled? no yes
Triggers transition events and classes for leaving and entering when used with the built-in <Transition> component? yes yes
Works with the built-in <template> element? no yes
Works with v-else-if and v-else? no yes

More Examples

Example

The v-show and v-if directives are used side-by-side to conditionally toggle the visibility of a <div> element.

Open the example, set the condition to 'false', then right-click and inspect the page to see that the element with v-show still exists in the DOM.

<div id="app">
  <div v-show="showDiv">Div tag with v-show</div>
  <div v-if="showDiv">Div tag with v-if</div>
</div>

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

Example

A <p> element becomes visible with v-show and triggers the after-enter event.

<template>
  <h1>JavaScript Transition Hooks</h1>
  <p>This code hooks into "after-enter" so that after the initial animation is done, a method runs that displays a red div.</p>
  <button @click="pVisible=true">Create p-tag!</button><br>
  <Transition @after-enter="onAfterEnter">
    <p v-show="pVisible" id="p1">Hello World!</p>
  </Transition>
  <br>
  <div v-show="divVisible">This appears after the "enter-active" phase of the transition.</div>
</template>

<script>
export default {
  data() {
    return {
      pVisible: false,
      divVisible: false
    }
  },
  methods: {
    onAfterEnter() {
      this.divVisible = true;
    }
  }
}
</script>

<style scoped>
  .v-enter-active {
    animation: swirlAdded 1s;
  }
  @keyframes swirlAdded {
    from {
      opacity: 0;
      rotate: 0;
      scale: 0.1;
    }
    to {
      opacity: 1;
      rotate: 360deg;
      scale: 1;
    }
  }
  #p1, div {
    display: inline-block;
    padding: 10px;
    border: dashed black 1px;
  }
  #p1 {
    background-color: lightgreen;
  }
  div {
    background-color: lightcoral;
  }
</style>
Run Example »

Related Pages

Vue Tutorial: Vue v-show Directive

Vue Tutorial: Vue v-if Directive

Vue Tutorial: Vue Animations

Vue Reference: Vue <Transition> Component

Vue Reference: Vue v-if Directive


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