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我正在尝试创建一个图像滑块,它会淡化图像。图像 1 应该在图像 2 淡入的同时淡出。换句话说:它们之间不应该有间隙。现在它没有什么比褪色更重要的了。该代码正在运行,到目前为止,当用户单击“下一步”时,当前图像消失,0.9 秒后出现下一个图像。它们之间有 0.9 秒的延迟(与 CSS 中声明的数量相同),因此它以某种方式识别转换时间。它只是不褪色,单击按钮后它立即消失。我错过了什么?

我的代码

<template>
  <div>
    <transition-group name='fade' tag='div'>
      <div v-for="i in [currentIndex]" :key='i'>
        <img :src="currentImg" />
      </div>
    </transition-group>
    <a class="prev" @click="prev" href='#'>&#10094;</a>
  <a class="next" @click="next" href='#'>&#10095;</a>
  </div>
</template>
<script>
export default {
  data() {
    return {
      images: [
        'https://cdn.pixabay.com/photo/2015/12/12/15/24/amsterdam-1089646_1280.jpg',
        'https://cdn.pixabay.com/photo/2016/02/17/23/03/usa-1206240_1280.jpg',
        'https://cdn.pixabay.com/photo/2015/05/15/14/27/eiffel-tower-768501_1280.jpg',
        'https://cdn.pixabay.com/photo/2016/12/04/19/30/berlin-cathedral-1882397_1280.jpg'
        ],
      timer: null,
      currentIndex: 0,
      show: true
    };
  },

  mounted: function () {
    this.startSlide();
  },

  methods: {
    startSlide: function () {
      this.timer = setInterval(this.next, 4000);
    },

    next: function () {
      this.currentIndex += 1;
    },
    prev: function () {
      this.currentIndex -= 1;
    },
  },

  computed: {
    currentImg: function () {
      return this.images[Math.abs(this.currentIndex) % this.images.length];
    },
  },
};
</script>
<style>
.fade-enter-active,
.fade-leave-active {
  transition: all 0.9s ease;
  overflow: hidden;
  visibility: visible;
  position: absolute;
  width:100%;
  opacity: 1;
}

.fade-enter,
.fade-leave-to {
  visibility: hidden;
  width:100%;
  opacity: 0;
}

img {
height:600px;
width:100%
  }

.prev, .next {
  cursor: pointer;
  position: absolute;
  top: 40%;
  width: auto;
  padding: 16px;
  color: white;
  font-weight: bold;
  font-size: 18px;
  transition: 0.7s ease;
  border-radius: 0 4px 4px 0;
  text-decoration: none;
  user-select: none;
}

.next {
  right: 0;
}

.prev {
  left: 0;
}

.prev:hover, .next:hover {
  background-color: rgba(0,0,0,0.9);
}

</style>
4

2 回答 2

0

这里把position:absolute事情搞砸了......删除了这条线,现在它就像一个魅力!

于 2021-04-19T20:36:13.100 回答
0

更改.fade-enter.fade-enter-from

查看示例

于 2021-04-19T19:52:26.063 回答