element-plus/docs/examples/avatar/fit.vue

<template>
  <div class="demo-fit">
    <div v-for="fit in fits" :key="fit" class="block">
      <span class="title">{{ fit }}</span>
      <el-avatar shape="square" :size="100" :fit="fit" :src="url"></el-avatar>
    </div>
  </div>
</template>
<script lang="ts">
import { defineComponent, reactive, toRefs } from 'vue'

export default defineComponent({
  setup() {
    const state = reactive({
      fits: ['fill', 'contain', 'cover', 'none', 'scale-down'],
      url: 'https://fuss10.elemecdn.com/e/5d/4a731a90594a4af544c0c25941171jpeg.jpeg',
    })

    return {
      ...toRefs(state),
    }
  },
})
</script>