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Vue <TransitionGroup> Component


Example

Using the built-in <TransitionGroup> component to create an <ol> tag with animated <li> tags inside.

<TransitionGroup tag="ol">
  <li v-for="x in products" :key="x">
    {{ x }}
  </li>
</TransitionGroup>
Run Example »

See more examples below.


Definition and Usage

The built-in <TransitionGroup> component is used around elements created with v-for, to give these elements individual animations when they are added or removed.

Tags created with v-for inside the <TransitionGroup> component must be uniquely defined with the key attribute.

The <TransitionGroup> component is only rendered as an HTML tag if we define it to be a specific tag by using the tag prop.

When tags are created inside the <TransitionGroup> component with v-for based on an array, these tags will be animated automatically when elements are added to, or removed from, the array.


Props

The built-in <TransitionGroup> component can be used with the same props as the built-in <Transition> component, but accepts the name and the moveClass props in addition:

Prop Description
none Default. Run Example »
tag <TransitionGroup> is rendered to be the tag specified. If the tag prop is not set, <TransitionGroup> will not be rendered as a tag. Run Example »
moveClass Creates a custom name for the move class. The default name for the move class is v-move. Run Example »

More Examples

Example 1

Dice can be added or removed, added dice are animated using <TransitionGroup>.

<template>
  <h3>The <TransitionGroup> Component</h3>
  <p>New products are given animations using the <TransitionGroup> component.</p>
  <button @click="addDie">Roll</button>
  <button @click="removeDie">Remove random</button><br>
  <TransitionGroup>
    <div v-for="x in dice" :key="x" class="diceDiv" :style="{ backgroundColor: 'hsl('+x*40+',85%,85%)' }">
      {{ x }}
    </div>
  </TransitionGroup>
</template>

<script>
  export default {
    data() {
      return {
        dice: [],
        inpName: ''
      }
    },
    methods: {
      addDie() {
        const newDie = Math.ceil(Math.random()*6);
        this.dice.push(newDie);
      },
      removeDie() {
        if(this.dice.length>0){
          this.dice.splice(Math.floor(Math.random()*this.dice.length), 1);
        }
      }
    },
    mounted() {
      this.addDie();
      this.addDie();
      this.addDie();
    }
  }
</script>

<style>
.v-enter-from {
  opacity: 0;
  translate: 200px 0;
  rotate: 360deg;
}
.v-enter-to {
  opacity: 1;
  translate: 0 0;
  rotate: 0deg;
}
.v-enter-active,
.v-leave-active {
  transition: all 0.7s;
}
.v-leave-from { opacity: 1; }
.v-leave-to { opacity: 0; }
.diceDiv {
  margin: 10px;
  width: 30px;
  height: 30px;
  line-height: 30px;
  vertical-align: middle;
  text-align: center;
  border: solid black 1px;
  border-radius: 5px;
  display: inline-block;
}
</style>
Run Example »

Example 2

Dice can be added or removed, both added and removed dice are animated using <TransitionGroup>.

<template>
  <h3>The <TransitionGroup> Component</h3>
  <p>When an item is removed inside the <TransitionGroup> component, other items are animated as they fall into their new positions.</p>
  <button @click="addDie">Roll</button>
  <button @click="removeDie">Remove random</button><br>
  <TransitionGroup>
    <div v-for="x in dice" :key="x" class="diceDiv" :style="{ backgroundColor: 'hsl('+x*40+',85%,85%)' }">
      {{ x }}
    </div>
  </TransitionGroup>
</template>

<script>
  export default {
    data() {
      return {
        dice: [],
        inpName: ''
      }
    },
    methods: {
      addDie() {
        const newDie = Math.ceil(Math.random()*6);
        this.dice.push(newDie);
      },
      removeDie() {
        if(this.dice.length>0){
          this.dice.splice(Math.floor(Math.random()*this.dice.length), 1);
        }
      }
    },
    mounted() {
      this.addDie();
      this.addDie();
      this.addDie();
    }
  }
</script>

<style>
.v-enter-from {
  opacity: 0;
  translate: 200px 0;
  rotate: 360deg;
}
.v-enter-to {
  opacity: 1;
  translate: 0 0;
  rotate: 0deg;
}
.v-enter-active,
.v-leave-active,
.v-move {
  transition: all 0.7s;
}
.v-leave-active { position: absolute; }
.v-leave-from { opacity: 1; }
.v-leave-to { opacity: 0; }
.diceDiv {
  margin: 10px;
  width: 30px;
  height: 30px;
  line-height: 30px;
  vertical-align: middle;
  text-align: center;
  border: solid black 1px;
  border-radius: 5px;
  display: inline-block;
}
</style>
Run Example »

Example 3

Dice can be added, removed shuffled or sorted, all animated using <TransitionGroup>.

<template>
  <h3>The <TransitionGroup> Component</h3>
  <p>Items inside the <TransitionGroup> component are animated when they are created or removed.</p>
  <button @click="addDie">Roll</button>
  <button @click="addDie10">Roll 10 dice</button>
  <button @click="dice.sort(compareFunc)">Sort</button>
  <button @click="dice.sort(shuffleFunc)">Shuffle</button><br>
  <TransitionGroup>
    <div 
    v-for="x in dice" 
    :key="x.keyNmbr" 
    class="diceDiv" 
    :style="{ backgroundColor: 'hsl('+x.dieNmbr*60+',85%,85%)' }"
    @click="removeDie(x.keyNmbr)">
      {{ x.dieNmbr }}
    </div>
  </TransitionGroup>
</template>

<script>
  export default {
    data() {
      return {
        dice: [],
        keyNumber: 0
      }
    },
    methods: {
      addDie() {
        const newDie = {
          dieNmbr: Math.ceil(Math.random()*6),
          keyNmbr: this.keyNumber
        };
        this.dice.splice(Math.floor(Math.random()*this.dice.length),0,newDie);
        this.keyNumber++;
      },
      addDie10() {
        for(let i=0; i<10; i++) {
          this.addDie();
        }
      },
      compareFunc(a,b){
        return a.dieNmbr - b.dieNmbr;
      },
      shuffleFunc(a,b){
        return Math.random()-0.5;
      },
      removeDie(key) {
        const pos = this.dice.map(e => e.keyNmbr).indexOf(key);
        this.dice.splice(pos, 1);
      }
    },
    mounted() {
      this.addDie10();
    }
  }
</script>

<style>
.v-enter-from {
  opacity: 0;
  scale: 0;
  rotate: 360deg;
}
.v-enter-to {
  opacity: 1;
  scale: 1;
  rotate: 0deg;
}
.v-enter-active,
.v-leave-active,
.v-move {
  transition: all 0.7s;
}
.v-leave-active { position: absolute; }
.v-leave-from { opacity: 1; }
.v-leave-to { opacity: 0; }
.diceDiv {
  margin: 10px;
  width: 30px;
  height: 30px;
  line-height: 30px;
  vertical-align: middle;
  text-align: center;
  border: solid black 1px;
  border-radius: 5px;
  display: inline-block;
}
.diceDiv:hover {
  cursor: pointer;
  box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
}
#app {
  position: relative;
}
</style>
Run Example »

Example 4

The move class is renamed using the moveClass prop.

<template>
  <h3>The <TransitionGroup> Component</h3>
  <p>When an item is removed inside the <TransitionGroup> component, other items are animated as they fall into their new positions.</p>
  <button @click="addDie">Roll</button>
  <button @click="removeDie">Remove random</button><br>
  <TransitionGroup moveClass="good-slide">
    <div 
    v-for="x in dice" 
    :key="x" 
    class="diceDiv" 
    :style="{ backgroundColor: 'hsl('+x*40+',85%,85%)' }"
    >
      {{ x }}
    </div>
  </TransitionGroup>
</template>

<script>
  export default {
    data() {
      return {
        dice: [],
        inpName: ''
      }
    },
    methods: {
      addDie() {
        const newDie = Math.ceil(Math.random()*6);
        this.dice.push(newDie);
      },
      removeDie() {
        if(this.dice.length>0){
          this.dice.splice(Math.floor(Math.random()*this.dice.length), 1);
        }
      }
    },
    mounted() {
      this.addDie();
      this.addDie();
      this.addDie();
    }
  }
</script>

<style>
.v-enter-from {
  opacity: 0;
  translate: 200px 0;
  rotate: 360deg;
}
.v-enter-to {
  opacity: 1;
  translate: 0 0;
  rotate: 0deg;
}
.v-enter-active,
.v-leave-active,
.good-slide {
  transition: all 0.7s;
}
.v-leave-active { position: absolute; }
.v-leave-from { opacity: 1; }
.v-leave-to { opacity: 0; }
.diceDiv {
  margin: 10px;
  width: 30px;
  height: 30px;
  line-height: 30px;
  vertical-align: middle;
  text-align: center;
  border: solid black 1px;
  border-radius: 5px;
  display: inline-block;
}
</style>
Run Example »

Related Pages

Vue Tutorial: Vue Animations

Vue Tutorial: Vue Animations with v-for

Vue Tutorial: Vue v-for Directive

Vue Tutorial: Vue v-for Components

Vue Reference: Vue <Transition> Component


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