Vue实现文字上下滚动动画的示例代码

<template>
  <div>
    <TransitionGroup name="fade" tag="ul" :duration="1000">
    // 此处ID需要唯一
      <li v-for="(item) in data" :key="item.id">
        【{{ item.user }}】{{ item.age }} //...
      </li>
    </TransitionGroup>
  </div>
</template>

import { onMounted, onUnmounted, ref, unref } from "vue";
import { getTransactionToday } from "@/services/common";
import store from "@/store";
import dayjs from "dayjs";

const data = ref([]);
let timer;
const getScrollText = async () => {
  const res = await api()
  data.value = res.data
  return Promise.resolve(res.data);
};

let num = 2000;
const init = async () => {
  clearTimeout(timer);
  await getScrollText();
  if (!unref(data).length) return;
  if ([1,2].includes(unref(data).length)) {
  // 这里的id可以改成其他字段，只要是唯一就行
    for (let i = 0; i < (4-unref(data).length); i++) {
      unref(data).push({ ...unref(data)[0], id: Date.now() + i });
    }
  }
  let delData;
  timer = setInterval(() => {
    if (delData) {
      unref(data).push(delData);
      delData = null;
    } else {
      delData = unref(data)[0];
      unref(data).shift();
    }
  }, num);
};
onMounted(() => {
  init();
});
onUnmounted(() => {
  clearInterval(timer);
});

<style scoped lang="scss">
$height: 40px;

.fade-move,
.fade-enter-active,
.fade-leave-active {
  transition: all 0.5s;
}

.fade-enter-from {
  transform: translate(0, $height);
}

.fade-leave-to {
  transform: translate(0, -$height);
}

.fade-enter-active,
.fade-leave-active {
  position: absolute;
}
</style>