element-plus/docs/examples/autocomplete/custom-loading.vue

<template>
  <div class="demo-autocomplete">
    <div class="demo-block">
      <div class="demo-title">loading icon1</div>
      <el-autocomplete
        v-model="state"
        :fetch-suggestions="querySearchAsync"
        class="w-50"
        placeholder="Please input"
        @select="handleSelect"
      >
        <template #loading>
          <svg class="circular" viewBox="0 0 50 50">
            <circle class="path" cx="25" cy="25" r="20" fill="none" />
          </svg>
        </template>
      </el-autocomplete>
    </div>
    <div class="demo-block">
      <div class="demo-title">loading icon2</div>
      <el-autocomplete
        v-model="state"
        :fetch-suggestions="querySearchAsync"
        class="w-50"
        placeholder="Please input"
        @select="handleSelect"
      >
        <template #loading>
          <el-icon class="is-loading">
            <svg class="circular" viewBox="0 0 20 20">
              <g
                class="path2 loading-path"
                stroke-width="0"
                style="animation: none; stroke: none"
              >
                <circle r="3.375" class="dot1" rx="0" ry="0" />
                <circle r="3.375" class="dot2" rx="0" ry="0" />
                <circle r="3.375" class="dot4" rx="0" ry="0" />
                <circle r="3.375" class="dot3" rx="0" ry="0" />
              </g>
            </svg>
          </el-icon>
        </template>
      </el-autocomplete>
    </div>
  </div>
</template>

<script lang="ts" setup>
import { onMounted, ref } from 'vue'

const state = ref('')

interface LinkItem {
  value: string
  link: string
}

const links = ref<LinkItem[]>([])

const loadAll = () => {
  return [
    { value: 'vue', link: 'https://github.com/vuejs/vue' },
    { value: 'element', link: 'https://github.com/ElemeFE/element' },
    { value: 'cooking', link: 'https://github.com/ElemeFE/cooking' },
    { value: 'mint-ui', link: 'https://github.com/ElemeFE/mint-ui' },
    { value: 'vuex', link: 'https://github.com/vuejs/vuex' },
    { value: 'vue-router', link: 'https://github.com/vuejs/vue-router' },
    { value: 'babel', link: 'https://github.com/babel/babel' },
  ]
}

let timeout: ReturnType<typeof setTimeout>
const querySearchAsync = (queryString: string, cb: (arg: any) => void) => {
  const results = queryString
    ? links.value.filter(createFilter(queryString))
    : links.value

  clearTimeout(timeout)
  timeout = setTimeout(() => {
    cb(results)
  }, 5000 * Math.random())
}
const createFilter = (queryString: string) => {
  return (restaurant: LinkItem) => {
    return (
      restaurant.value.toLowerCase().indexOf(queryString.toLowerCase()) === 0
    )
  }
}

const handleSelect = (item: Record<string, any>) => {
  console.log(item)
}

onMounted(() => {
  links.value = loadAll()
})
</script>

<style scoped>
.demo-autocomplete {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
}

.demo-block {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.demo-title {
  font-size: 0.875rem;
  color: var(--el-text-color-secondary);
  min-height: 2.5em;
  display: flex;
  align-items: center;
}

@media screen and (max-width: 768px) {
  .demo-autocomplete {
    gap: 1rem;
  }
  .demo-block {
    width: 100%;
  }
}
</style>

<style>
.circular {
  display: inline;
  height: 30px;
  width: 30px;
  animation: loading-rotate 2s linear infinite;
}
.path {
  animation: loading-dash 1.5s ease-in-out infinite;
  stroke-dasharray: 90, 150;
  stroke-dashoffset: 0;
  stroke-width: 2;
  stroke: var(--el-color-primary);
  stroke-linecap: round;
}
.loading-path .dot1 {
  transform: translate(3.75px, 3.75px);
  fill: var(--el-color-primary);
  animation: custom-spin-move 1s infinite linear alternate;
  opacity: 0.3;
}
.loading-path .dot2 {
  transform: translate(calc(100% - 3.75px), 3.75px);
  fill: var(--el-color-primary);
  animation: custom-spin-move 1s infinite linear alternate;
  opacity: 0.3;
  animation-delay: 0.4s;
}
.loading-path .dot3 {
  transform: translate(3.75px, calc(100% - 3.75px));
  fill: var(--el-color-primary);
  animation: custom-spin-move 1s infinite linear alternate;
  opacity: 0.3;
  animation-delay: 1.2s;
}
.loading-path .dot4 {
  transform: translate(calc(100% - 3.75px), calc(100% - 3.75px));
  fill: var(--el-color-primary);
  animation: custom-spin-move 1s infinite linear alternate;
  opacity: 0.3;
  animation-delay: 0.8s;
}
@keyframes loading-rotate {
  to {
    transform: rotate(360deg);
  }
}
@keyframes loading-dash {
  0% {
    stroke-dasharray: 1, 200;
    stroke-dashoffset: 0;
  }
  50% {
    stroke-dasharray: 90, 150;
    stroke-dashoffset: -40px;
  }
  100% {
    stroke-dasharray: 90, 150;
    stroke-dashoffset: -120px;
  }
}
@keyframes custom-spin-move {
  to {
    opacity: 1;
  }
}
</style>