Vue实现多行文本溢出省略号显示

<template>
  <div class="text-container">
    <p class="text">这是一个长文本内容，可能会超出容器宽度，需要进行省略号显示</p>
  </div>
</template>

<style>
.text-container {
  width: 200px;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.text {
  margin: 0;
  font-size: 14px;
  line-height: 1.5;
}
</style>

Vue实现图片懒加载

<template>
  <div class="image-container">
    <img v-bind:src="placeholder" v-lazy="imageUrl" alt="Lazy Loading Image" />
  </div>
</template>

<script>
export default {
  data() {
    return {
      placeholder: 'placeholder.png',
      imageUrl: 'actual_image.jpg',
    };
  },
  directives: {
    lazy: {
      inserted: function (el, binding) {
        let options = {
          threshold: 0.5,
          rootMargin: '0px 0px 100px 0px',
        };
        let lazyImage = new IntersectionObserver(function (entries) {
          let image = entries[0];
          if (image.isIntersecting) {
            el.src = binding.value;
            lazyImage.unobserve(el);
          }
        }, options);
        lazyImage.observe(el);
      },
    },
  },
};
</script>

Vue实现无限滚动加载数据

<template>
  <div class="data-container">
    <ul>
      <li v-for="(item, index) in items" :key="index">{{ item }}</li>
    </ul>
    <div v-if="isLoading" class="loading-message">加载中，请稍候...</div>
    <div v-else-if="isEnd" class="end-message">已加载全部数据</div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      items: [],
      page: 1,
      isLoading: false,
      isEnd: false,
    };
  },
  created() {
    this.loadData();
    window.addEventListener('scroll', this.handleScroll);
  },
  destroyed() {
    window.removeEventListener('scroll', this.handleScroll);
  },
  methods: {
    loadData() {
      // 模拟异步加载数据
      this.isLoading = true;
      setTimeout(() => {
        for (let i = 0; i< 10; i++) {
          this.items.push(`Item ${this.items.length + 1}`);
        }
        this.page++;
        this.isLoading = false;
        if (this.page >= 5) {
          this.isEnd = true;
        }
      }, 1500);
    },
    handleScroll() {
      let scrollTop = document.documentElement.scrollTop || document.body.scrollTop;
      let windowHeight = window.innerHeight || document.documentElement.clientHeight || document.body.clientHeight;
      let scrollHeight = document.documentElement.scrollHeight || document.body.scrollHeight;
      if (scrollTop + windowHeight >= scrollHeight - 100 && !this.isLoading && !this.isEnd) {
        this.loadData();
      }
    },
  },
};
</script>