Vue transition-group - how to prevent "jumping"?

Question

I have two divs that i transition between using transition-group, which works as it should - however, the content below the divs transitioning, is "jumping" depending on the height of the divs. What I want it that jumping being prevented, and instead it animates somehow, so I get a nice smooth transition when switching between elements without it "pushing" down to content with a "jump"..

Hope it makes sense :)

I've setup an example on codesandbox here: https://codesandbox.io/s/reverent-stallman-8ixhp?file=/src/components/HelloWorld.vue

The template looks like:

<div class="hello">
    <button @click="groupShowOne">Show first {{ gShowFirst }}</button>
    <button @click="groupShowTwo">Show second {{ gShowSecond }}</button>
    <transition-group name="fade-group" tag="div" mode="out-in" appear>
      <div
        class="group-element"
        v-if="gShowFirst"
        style="background-color: yellow"
      >
        <h3>This is a headline</h3>
        <p>This is a text</p>
      </div>
      <div
        class="group-element"
        v-if="gShowSecond"
        style="background-color: red"
      >
        <h3>
          This is a headline <br />This is a headline <br />This is a headline
          This is a headline This is a headline This is a headline
        </h3>
        <p>
          This is a text This is a text This is a text This is a text This is a
          text v This is a text v <br />This is a text This is a text This is a
          text This is a text This is a text v This is a text v <br />This is a
          text This is a text This is a text This is a text This is a text v
          This is a text v
        </p>
      </div>
    </transition-group>
    <div style="background-color: blue; min-height: 500px; color: #FFF">
      Prevent this div from jumping<br />
    </div>
  </div>

The animation looks:

<style scoped>
.group-element {
  width: 100%;
  min-height: 100px;
  max-height: 20000px;
  transition: all 0.5s;
}
.fade-group-enter,
.fade-group-leave-to {
  opacity: 1;
}
.fade-group-leave-active {
  opacity: 0;
  position: absolute;
}
</style>

Answer 1

Try this

1. Setting the transition property in the passive div:

.ele {
  background-color: blue;
  min-height: 500px;
  color: #fff;
  -moz-transition: all 0.5s;
  -ms-transition: all 0.5s;
  -o-transition: all 0.5s;
  -webkit-transition: all 0.5s;
  transition: all 0.5s;
}

2. Let it do some animation

eleStyle() {
  return {
    transform: this.gShowSecond ? "translate3d(0, 100px, 0)" : "none",
  };
},

The div:

<div class="ele" :style="eleStyle">Prevent this div from jumping<br /></div>

Answer 2

What you can try:

1. Vue has a *-move class for group transitions. However, the transition-group has to be applied to all the elements including the one that has the v-move class, to work.

   • Here's the article link if you need it for more details: https://vuejs.org/guide/built-ins/transition-group.html#move-transitions

     (*-move basically animates items from their original position to their new position, making it smooth, rather than jumpy)

2. You could still work with what you have and dynamically bind a separate CSS transition for the blue box when showSecond or showFirst equate to a certain value.