vue的列表交错过渡实现代码示例

<div id="app" @click="num === 0 ? num++ : num = 5">
  <transition-group name="list">
    <item v-for="n in num" :key=n />
  </transition-group>
</div>

.list-enter {
  opacity: 0;
  transform: translateY(100%);
}
.list-enter-active {
  transition: .3s;
}
/* enter-to其实可以不用写, 没有显性写明，就是默认的opacity: 1;transform: none; */
.list-enter-to {
  opacity: 1;
  transform: translateY(0);
}

.list-enter-active:nth-child(5n+2) {
  transition-delay: .3s;
}
.list-enter-active:nth-child(5n+3) {
  transition-delay: .5s;
}
.list-enter-active:nth-child(5n+4) {
  transition-delay: .7s;
}
.list-enter-active:nth-child(5n+5) {
  transition-delay: .9s;
}

<div id="app" @click="num === 0 ? num++ : num = 5">
  <!-- 这里加上 v-bind:css="false" 让vue跳过对css的检测，让我们更好控制 动画完成的时机 -->
  <transition-group 
    v-bind:css="false"
    v-on:before-enter="beforeEnter" 
    v-on:enter="enter"
    v-on:after-enter="afterEnter">

    <item v-for="(n,index) in num" :key=n :data-delay=index*100 />

  </transition-group>
</div>

new Vue({
  el: "#app",
  data: () => ({
    num: 0
  }),
  methods: {
    //让我们在 beforeEnter enter afterEnter 钩子里，把 vue 帮我们做的事，自己做一遍:
    //添加移除 class 类名，监听 transitionend 事件。
    beforeEnter(dom) {
      dom.classList.add('list-enter', 'list-enter-active');
    },
    enter(dom,done) {
      let delay = dom.dataset.delay;
      setTimeout(function () {
        dom.classList.remove('list-enter');
        dom.classList.add('list-enter-to');
        //监听 transitionend 事件
        var transitionend = window.ontransitionend ? "transitionend" : "webkitTransitionEnd";
        dom.addEventListener(transitionend, function onEnd() {
         dom.removeEventListener(transitionend, onEnd);
         done(); //调用done() 告诉vue动画已完成，以触发 afterEnter 钩子
        });
      }, delay)
    },
    afterEnter(dom) {
      dom.classList.remove('list-enter-to', 'list-enter-active');
    }
  }
})

<div id="app" @click="num ? num++ : num=5">
    <transition-group 
      v-bind:css="false" 
      v-on:before-enter="beforeEnter" 
      v-on:enter="enter"
      v-on:after-enter="afterEnter">

      <item v-for="(n,index) in num" 
        :key=n 
        :data-delay=index*100 
        data-y="100%"
        />

    </transition-group>
  </div>

new Vue({
  el: "#app",
  data: () => ({
    num: 0
  }),
  methods: {
    beforeEnter(dom) {
      let { x = 0, y = 0, s = 1, opacity = 0 } = dom.dataset;
      dom.style.cssText = `transition: .3s;opacity: ${opacity};transform: scale(${s}) translateX(${x}) translateY(${y});`;
    },
    enter(dom,done) {
      let delay = dom.dataset.delay;
      setTimeout(function () {
        dom.style.cssText = `transition: .3s;opacity: 1;transform: scale(1) translateX(0) translateY(0);`;
        //监听 transitionend 事件
        var transitionend = window.ontransitionend ? "transitionend" : "webkitTransitionEnd";
        dom.addEventListener(transitionend, function onEnd() {
         dom.removeEventListener(transitionend, onEnd);
         done(); //调用done() 告诉vue动画已完成，以触发 afterEnter 钩子
        });
      }, delay)
    },
    afterEnter(dom) {
      dom.style.cssText = "";
    }
  }
})

  <item v-for="(n,index) in num" 
    :key=n 
    :data-delay=index*100 
    :data-x="index%2 === 0 ? '-50%' : '50%'" 
    :data-y="getRandom()+'%'"
    :data-s="Math.random()"
  />

getRandom() {
  var rate = Math.floor(Math.random() * 90 + 10);
  return Math.random() > 0.5 ? rate : -1 * rate;
}