z_element_plus/docs/examples/button/loading.vue

<template>
  <el-button type="primary" loading>Loading</el-button>
  <el-button type="primary" :loading-icon="Eleme" loading>Loading</el-button>
  <el-button type="primary" loading>
    <template #loading>
      <div class="custom-loading">
        <svg class="circular" viewBox="-10, -10, 50, 50">
          <path
            class="path"
            d="
            M 30 15
            L 28 17
            M 25.61 25.61
            A 15 15, 0, 0, 1, 15 30
            A 15 15, 0, 1, 1, 27.99 7.5
            L 15 15
          "
            style="stroke-width: 4px; fill: rgba(0, 0, 0, 0)"
          />
        </svg>
      </div>
    </template>
    Loading
  </el-button>
</template>

<script lang="ts" setup>
import { Eleme } from '@element-plus/icons-vue'
</script>

<style scoped>
.el-button .custom-loading .circular {
  margin-right: 6px;
  width: 18px;
  height: 18px;
  animation: loading-rotate 2s linear infinite;
}
.el-button .custom-loading .circular .path {
  animation: loading-dash 1.5s ease-in-out infinite;
  stroke-dasharray: 90, 150;
  stroke-dashoffset: 0;
  stroke-width: 2;
  stroke: var(--el-button-text-color);
  stroke-linecap: round;
}
</style>