chrome弧形标签页实现思路收录

1.  直线圆角，通过单个伪元素的border-radius产生弧形

<template>
  <div class="tab-list">
    <div
      v-for="tab in tabs"
      :key="tab.id"
      class="tab-item"
      :class="activeTab === tab.id ? 'active' : ''"
      @click="onTab(tab.id)"
    >
      <div>{{ tab.label }}</div>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      tabs: [
        { id: 0, label: '' },
        { id: 1, label: '我的信息' },
        { id: 2, label: '我信' },
        { id: 3, label: '我的信' },
        { id: 4, label: '我的信息流' },
        { id: 5, label: '' },
      ],
      activeTab: 2,
    };
  },
  methods: {
    onTab(id) {
      this.activeTab = id;
    },
  },
};
</script>

<style lang="scss">
// scss
$tab-height: 52px;
$active-color: #ffffff;
$default-color: #e2e8f8;
$primary-color: blue;

.tab-list {
  display: flex;
  position: relative;
  z-index: 2;
  border-radius: 12px 12px 0 0;
  background-color: $default-color;
  overflow: hidden;
  padding: 0 80px;
  .tab-item:first-child,
  .tab-item:last-child {
    flex: none;
  }
  .tab-item:last-child::after{
    display: none;
  }
  .tab-item {
    flex: auto;
    height: $tab-height;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 14px;
    color: $primary-color;
    font-weight: 600;
    position: relative;
  }
  .tab-item.active {
    opacity: 1;
    background: #fff;
    border-radius: 12px 12px 0 0;
    box-shadow: 12px 43px 0 $active-color, -12px 43px 0 0 $active-color;
  }
  .tab-item.active::before {
    content: '';
    position: absolute;
    bottom: 0;
    width: 12px;
    height: $tab-height;
    border-bottom-right-radius: 12px;
    background: $default-color;
    left: -12px;
    z-index: 1;
  }
  .tab-item.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    width: 12px;
    height: $tab-height;
    right: 6px;
    background: $default-color;
    border-bottom-left-radius: 12px;
    z-index: 1;
    right: -12px;
  }
}
</style>

详细可参考 实现tabs圆角及反圆角效果

2. 斜线圆角，通过两个相邻伪元素的border-radius和skew配合产生两个弧形

<template>
  <div class="tab-list">
    <div
      v-for="tab in tabs"
      :key="tab.id"
      class="tab-item"
      :class="activeTab === tab.id ? 'active' : ''"
      @click="onTab(tab.id)"
    >
      <div>{{ tab.label }}</div>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      tabs: [
        { id: 0, label: '' },
        { id: 1, label: '我的信息' },
        { id: 2, label: '我信' },
        { id: 3, label: '我的信' },
        { id: 4, label: '我的信息流' },
        { id: 5, label: '' },
      ],
      activeTab: 1,
    };
  },
  methods: {
    onTab(id) {
      this.activeTab = id;
    },
  },
};
</script>

<style lang="scss">
// scss
$tab-height: 52px;
$active-color: #ffffff;
$default-color: #e2e8f8;
$primary-color: blue;

.tab-list {
  display: flex;
  position: relative;
  z-index: 2;
  border-radius: 12px 12px 0 0;
  background-color: $default-color;
  overflow: hidden;
  padding: 0 80px;
  .tab-item:first-child,
  .tab-item:last-child {
    flex: none;
  }
  .tab-item:last-child::after{
    display: none;
  }
  .tab-item {
    flex: auto;
    height: $tab-height;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 14px;
    color: $primary-color;
    font-weight: 600;
    position: relative;
  }
  .tab-item.active {
    opacity: 1;
    background: #fff;
    border-radius: 12px 12px 0 0;
    box-shadow: 24px 40px 0 $active-color, -24px 40px 0 0 $active-color;
  }
  .tab-item::before {
    content: '';
    position: absolute;
    bottom: 0;
    width: 12px;
    height: $tab-height;
    left: 6px;
    border-bottom-left-radius: 12px;
    background: $default-color;
    transform: skewX(15deg);
  }
  .tab-item.active::before {
    left: -6px;
    border-top-left-radius: 12px;
    background: $active-color;
    transform: skewX(-15deg);
  }
  .tab-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    width: 12px;
    height: $tab-height;
    right: 6px;
    background: $default-color;
    border-bottom-right-radius: 12px;
    transform: skewX(-15deg);
    z-index: 1;
  }
  .tab-item.active::after {
    right: -6px;
    border-top-right-radius: 12px;
    background: $active-color;
    transform: skewX(15deg);
  }
}
</style>

详细参考此文 实现tabs圆角及反圆角效果（PLUS）