Select 选择器 ​

<template>
  <div class="flex flex-wrap gap-4 items-center">
    <el-select
      v-model="value"
      placeholder="Select"
      size="large"
      style="width: 240px"
    >
      <el-option
        v-for="item in options"
        :key="item.value"
        :label="item.label"
        :value="item.value"
      />
    </el-select>
    <el-select v-model="value" placeholder="Select" style="width: 240px">
      <el-option
        v-for="item in options"
        :key="item.value"
        :label="item.label"
        :value="item.value"
      />
    </el-select>
    <el-select
      v-model="value"
      placeholder="Select"
      size="small"
      style="width: 240px"
    >
      <el-option
        v-for="item in options"
        :key="item.value"
        :label="item.label"
        :value="item.value"
      />
    </el-select>
  </div>
</template>

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

const value = ref('')

const options = [
  {
    value: 'Option1',
    label: 'Option1',
  },
  {
    value: 'Option2',
    label: 'Option2',
  },
  {
    value: 'Option3',
    label: 'Option3',
  },
  {
    value: 'Option4',
    label: 'Option4',
  },
  {
    value: 'Option5',
    label: 'Option5',
  },
]
</script>

<template>
  <el-select v-model="value" placeholder="Select" style="width: 240px">
    <el-option
      v-for="item in options"
      :key="item.value"
      :label="item.label"
      :value="item.value"
      :disabled="item.disabled"
    />
  </el-select>
</template>

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

const value = ref('')
const options = [
  {
    value: 'Option1',
    label: 'Option1',
  },
  {
    value: 'Option2',
    label: 'Option2',
    disabled: true,
  },
  {
    value: 'Option3',
    label: 'Option3',
  },
  {
    value: 'Option4',
    label: 'Option4',
  },
  {
    value: 'Option5',
    label: 'Option5',
  },
]
</script>

<template>
  <el-select v-model="value" disabled placeholder="Select" style="width: 240px">
    <el-option
      v-for="item in options"
      :key="item.value"
      :label="item.label"
      :value="item.value"
    />
  </el-select>
</template>

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

const value = ref('')
const options = [
  {
    value: 'Option1',
    label: 'Option1',
  },
  {
    value: 'Option2',
    label: 'Option2',
  },
  {
    value: 'Option3',
    label: 'Option3',
  },
  {
    value: 'Option4',
    label: 'Option4',
  },
  {
    value: 'Option5',
    label: 'Option5',
  },
]
</script>

<template>
  <el-select
    v-model="value"
    clearable
    placeholder="Select"
    style="width: 240px"
  >
    <el-option
      v-for="item in options"
      :key="item.value"
      :label="item.label"
      :value="item.value"
    />
  </el-select>
</template>

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

const value = ref('')
const options = [
  {
    value: 'Option1',
    label: 'Option1',
  },
  {
    value: 'Option2',
    label: 'Option2',
  },
  {
    value: 'Option3',
    label: 'Option3',
  },
  {
    value: 'Option4',
    label: 'Option4',
  },
  {
    value: 'Option5',
    label: 'Option5',
  },
]
</script>

<template>
  <div class="m-4">
    <p>default</p>
    <el-select
      v-model="value1"
      multiple
      placeholder="Select"
      style="width: 240px"
    >
      <el-option
        v-for="item in options"
        :key="item.value"
        :label="item.label"
        :value="item.value"
      />
    </el-select>
  </div>
  <div class="m-4">
    <p>use collapse-tags</p>
    <el-select
      v-model="value2"
      multiple
      collapse-tags
      placeholder="Select"
      style="width: 240px"
    >
      <el-option
        v-for="item in options"
        :key="item.value"
        :label="item.label"
        :value="item.value"
      />
    </el-select>
  </div>
  <div class="m-4">
    <p>use collapse-tags-tooltip</p>
    <el-select
      v-model="value3"
      multiple
      collapse-tags
      collapse-tags-tooltip
      placeholder="Select"
      style="width: 240px"
    >
      <el-option
        v-for="item in options"
        :key="item.value"
        :label="item.label"
        :value="item.value"
      />
    </el-select>
  </div>
  <div class="m-4">
    <p>use max-collapse-tags</p>
    <el-select
      v-model="value4"
      multiple
      collapse-tags
      collapse-tags-tooltip
      :max-collapse-tags="3"
      placeholder="Select"
      style="width: 240px"
    >
      <el-option
        v-for="item in options"
        :key="item.value"
        :label="item.label"
        :value="item.value"
      />
    </el-select>
  </div>
</template>

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

const value1 = ref([])
const value2 = ref([])
const value3 = ref([])
const value4 = ref([])
const options = [
  {
    value: 'Option1',
    label: 'Option1',
  },
  {
    value: 'Option2',
    label: 'Option2',
  },
  {
    value: 'Option3',
    label: 'Option3',
  },
  {
    value: 'Option4',
    label: 'Option4',
  },
  {
    value: 'Option5',
    label: 'Option5',
  },
]
</script>

<template>
  <el-select v-model="value" placeholder="Select" style="width: 240px">
    <el-option
      v-for="item in cities"
      :key="item.value"
      :label="item.label"
      :value="item.value"
    >
      <span style="float: left">{{ item.label }}</span>
      <span
        style="
          float: right;
          color: var(--el-text-color-secondary);
          font-size: 13px;
        "
      >
        {{ item.value }}
      </span>
    </el-option>
  </el-select>
</template>

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

const value = ref('')
const cities = [
  {
    value: 'Beijing',
    label: 'Beijing',
  },
  {
    value: 'Shanghai',
    label: 'Shanghai',
  },
  {
    value: 'Nanjing',
    label: 'Nanjing',
  },
  {
    value: 'Chengdu',
    label: 'Chengdu',
  },
  {
    value: 'Shenzhen',
    label: 'Shenzhen',
  },
  {
    value: 'Guangzhou',
    label: 'Guangzhou',
  },
]
</script>

<template>
  <el-select
    v-model="value"
    multiple
    clearable
    collapse-tags
    placeholder="Select"
    popper-class="custom-header"
    :max-collapse-tags="1"
    style="width: 240px"
  >
    <template #header>
      <el-checkbox
        v-model="checkAll"
        :indeterminate="indeterminate"
        @change="handleCheckAll"
      >
        All
      </el-checkbox>
    </template>
    <el-option
      v-for="item in cities"
      :key="item.value"
      :label="item.label"
      :value="item.value"
    />
  </el-select>
</template>

<script lang="ts" setup>
import { ref, watch } from 'vue'
import type { CheckboxValueType } from 'element-plus'

const checkAll = ref(false)
const indeterminate = ref(false)
const value = ref<CheckboxValueType[]>([])
const cities = ref([
  {
    value: 'Beijing',
    label: 'Beijing',
  },
  {
    value: 'Shanghai',
    label: 'Shanghai',
  },
  {
    value: 'Nanjing',
    label: 'Nanjing',
  },
  {
    value: 'Chengdu',
    label: 'Chengdu',
  },
  {
    value: 'Shenzhen',
    label: 'Shenzhen',
  },
  {
    value: 'Guangzhou',
    label: 'Guangzhou',
  },
])

watch(value, (val) => {
  if (val.length === 0) {
    checkAll.value = false
    indeterminate.value = false
  } else if (val.length === cities.value.length) {
    checkAll.value = true
    indeterminate.value = false
  } else {
    indeterminate.value = true
  }
})

const handleCheckAll = (val: CheckboxValueType) => {
  indeterminate.value = false
  if (val) {
    value.value = cities.value.map((_) => _.value)
  } else {
    value.value = []
  }
}
</script>

<style>
.custom-header {
  .el-checkbox {
    display: flex;
    height: unset;
  }
}
</style>

<template>
  <el-select v-model="value" placeholder="Select" style="width: 240px">
    <el-option
      v-for="item in cities"
      :key="item.value"
      :label="item.label"
      :value="item.value"
    />
    <template #footer>
      <el-button v-if="!isAdding" text bg size="small" @click="onAddOption">
        Add an option
      </el-button>
      <template v-else>
        <el-input
          v-model="optionName"
          class="option-input"
          placeholder="input option name"
          size="small"
        />
        <el-button type="primary" size="small" @click="onConfirm">
          confirm
        </el-button>
        <el-button size="small" @click="clear">cancel</el-button>
      </template>
    </template>
  </el-select>
</template>

<script lang="ts" setup>
import { ref } from 'vue'
import type { CheckboxValueType } from 'element-plus'

const isAdding = ref(false)
const value = ref<CheckboxValueType[]>([])
const optionName = ref('')
const cities = ref([
  {
    value: 'Beijing',
    label: 'Beijing',
  },
  {
    value: 'Shanghai',
    label: 'Shanghai',
  },
  {
    value: 'Nanjing',
    label: 'Nanjing',
  },
  {
    value: 'Chengdu',
    label: 'Chengdu',
  },
  {
    value: 'Shenzhen',
    label: 'Shenzhen',
  },
  {
    value: 'Guangzhou',
    label: 'Guangzhou',
  },
])

const onAddOption = () => {
  isAdding.value = true
}

const onConfirm = () => {
  if (optionName.value) {
    cities.value.push({
      label: optionName.value,
      value: optionName.value,
    })
    clear()
  }
}

const clear = () => {
  optionName.value = ''
  isAdding.value = false
}
</script>

<style>
.option-input {
  width: 100%;
  margin-bottom: 8px;
}
</style>

<template>
  <el-select v-model="value" placeholder="Select" style="width: 240px">
    <el-option-group
      v-for="group in options"
      :key="group.label"
      :label="group.label"
    >
      <el-option
        v-for="item in group.options"
        :key="item.value"
        :label="item.label"
        :value="item.value"
      />
    </el-option-group>
  </el-select>
</template>

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

const value = ref('')
const options = [
  {
    label: 'Popular cities',
    options: [
      {
        value: 'Shanghai',
        label: 'Shanghai',
      },
      {
        value: 'Beijing',
        label: 'Beijing',
      },
    ],
  },
  {
    label: 'City name',
    options: [
      {
        value: 'Chengdu',
        label: 'Chengdu',
      },
      {
        value: 'Shenzhen',
        label: 'Shenzhen',
      },
      {
        value: 'Guangzhou',
        label: 'Guangzhou',
      },
      {
        value: 'Dalian',
        label: 'Dalian',
      },
    ],
  },
]
</script>

<template>
  <el-select
    v-model="value"
    filterable
    placeholder="Select"
    style="width: 240px"
  >
    <el-option
      v-for="item in options"
      :key="item.value"
      :label="item.label"
      :value="item.value"
    />
  </el-select>
</template>

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

const value = ref('')
const options = [
  {
    value: 'Option1',
    label: 'Option1',
  },
  {
    value: 'Option2',
    label: 'Option2',
  },
  {
    value: 'Option3',
    label: 'Option3',
  },
  {
    value: 'Option4',
    label: 'Option4',
  },
  {
    value: 'Option5',
    label: 'Option5',
  },
]
</script>

<template>
  <div class="flex flex-wrap">
    <div class="m-4">
      <p>default</p>
      <el-select
        v-model="value"
        multiple
        filterable
        remote
        reserve-keyword
        placeholder="Please enter a keyword"
        :remote-method="remoteMethod"
        :loading="loading"
        style="width: 240px"
      >
        <el-option
          v-for="item in options"
          :key="item.value"
          :label="item.label"
          :value="item.value"
        />
      </el-select>
    </div>
    <div class="m-4">
      <p>use remote-show-suffix</p>
      <el-select
        v-model="value"
        multiple
        filterable
        remote
        reserve-keyword
        placeholder="Please enter a keyword"
        remote-show-suffix
        :remote-method="remoteMethod"
        :loading="loading"
        style="width: 240px"
      >
        <el-option
          v-for="item in options"
          :key="item.value"
          :label="item.label"
          :value="item.value"
        />
      </el-select>
    </div>
  </div>
</template>

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

interface ListItem {
  value: string
  label: string
}

const list = ref<ListItem[]>([])
const options = ref<ListItem[]>([])
const value = ref<string[]>([])
const loading = ref(false)

onMounted(() => {
  list.value = states.map((item) => {
    return { value: `value:${item}`, label: `label:${item}` }
  })
})

const remoteMethod = (query: string) => {
  if (query) {
    loading.value = true
    setTimeout(() => {
      loading.value = false
      options.value = list.value.filter((item) => {
        return item.label.toLowerCase().includes(query.toLowerCase())
      })
    }, 200)
  } else {
    options.value = []
  }
}

const states = [
  'Alabama',
  'Alaska',
  'Arizona',
  'Arkansas',
  'California',
  'Colorado',
  'Connecticut',
  'Delaware',
  'Florida',
  'Georgia',
  'Hawaii',
  'Idaho',
  'Illinois',
  'Indiana',
  'Iowa',
  'Kansas',
  'Kentucky',
  'Louisiana',
  'Maine',
  'Maryland',
  'Massachusetts',
  'Michigan',
  'Minnesota',
  'Mississippi',
  'Missouri',
  'Montana',
  'Nebraska',
  'Nevada',
  'New Hampshire',
  'New Jersey',
  'New Mexico',
  'New York',
  'North Carolina',
  'North Dakota',
  'Ohio',
  'Oklahoma',
  'Oregon',
  'Pennsylvania',
  'Rhode Island',
  'South Carolina',
  'South Dakota',
  'Tennessee',
  'Texas',
  'Utah',
  'Vermont',
  'Virginia',
  'Washington',
  'West Virginia',
  'Wisconsin',
  'Wyoming',
]
</script>

<template>
  <el-select
    v-model="value"
    multiple
    filterable
    allow-create
    default-first-option
    :reserve-keyword="false"
    placeholder="Choose tags for your article"
    style="width: 240px"
  >
    <el-option
      v-for="item in options"
      :key="item.value"
      :label="item.label"
      :value="item.value"
    />
  </el-select>
</template>

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

const value = ref<string[]>([])
const options = [
  {
    value: 'HTML',
    label: 'HTML',
  },
  {
    value: 'CSS',
    label: 'CSS',
  },
  {
    value: 'JavaScript',
    label: 'JavaScript',
  },
]
</script>

<template>
  <div class="m-4">
    <el-select
      v-model="value"
      value-key="id"
      placeholder="Select"
      style="width: 240px"
    >
      <el-option
        v-for="item in options"
        :key="item.id"
        :label="item.label"
        :value="item"
      />
    </el-select>
    <p>
      selected option's description:
      {{ value ? value.desc : 'no select' }}
    </p>
  </div>
</template>

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

type Option = {
  id: number
  label: string
  desc: string
}
const value = ref<Option>()
const options = ref([
  { id: 1, label: 'Option A', desc: 'Option A - 230506' },
  { id: 2, label: 'Option B', desc: 'Option B - 230506' },
  { id: 3, label: 'Option C', desc: 'Option C - 230506' },
  { id: 4, label: 'Option A', desc: 'Option A - 230507' },
])
</script>

<template>
  <el-select v-model="value" multiple placeholder="Select" style="width: 240px">
    <el-option
      v-for="item in colors"
      :key="item.value"
      :label="item.label"
      :value="item.value"
    >
      <div class="flex items-center">
        <el-tag :color="item.value" style="margin-right: 8px" size="small" />
        <span :style="{ color: item.value }">{{ item.label }}</span>
      </div>
    </el-option>
    <template #tag>
      <el-tag v-for="color in value" :key="color" :color="color" />
    </template>
  </el-select>
</template>

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

const value = ref<string[]>([])
const colors = [
  {
    value: '#E63415',
    label: 'red',
  },
  {
    value: '#FF6600',
    label: 'orange',
  },
  {
    value: '#FFDE0A',
    label: 'yellow',
  },
  {
    value: '#1EC79D',
    label: 'green',
  },
  {
    value: '#14CCCC',
    label: 'cyan',
  },
  {
    value: '#4167F0',
    label: 'blue',
  },
  {
    value: '#6222C9',
    label: 'purple',
  },
]
colors.forEach((color) => {
  value.value.push(color.value)
})
</script>

<style scoped>
.el-tag {
  border: none;
  aspect-ratio: 1;
}
</style>

<template>
  <div class="flex flex-wrap">
    <div class="m-4">
      <p>loading icon1</p>
      <el-select
        v-model="value"
        multiple
        filterable
        remote
        reserve-keyword
        placeholder="Please enter a keyword"
        :remote-method="remoteMethod"
        :loading="loading"
        style="width: 240px"
      >
        <el-option
          v-for="item in options"
          :key="item.value"
          :label="item.label"
          :value="item.value"
        />
        <template #loading>
          <svg class="circular" viewBox="0 0 50 50">
            <circle class="path" cx="25" cy="25" r="20" fill="none" />
          </svg>
        </template>
      </el-select>
    </div>
    <div class="m-4">
      <p>loading icon2</p>
      <el-select
        v-model="value"
        multiple
        filterable
        remote
        reserve-keyword
        placeholder="Please enter a keyword"
        :remote-method="remoteMethod"
        :loading="loading"
        style="width: 240px"
      >
        <el-option
          v-for="item in options"
          :key="item.value"
          :label="item.label"
          :value="item.value"
        />
        <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-select>
    </div>
  </div>
</template>

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

interface ListItem {
  value: string
  label: string
}

const list = ref<ListItem[]>([])
const options = ref<ListItem[]>([])
const value = ref<string[]>([])
const loading = ref(false)

onMounted(() => {
  list.value = states.map((item) => {
    return { value: `value:${item}`, label: `label:${item}` }
  })
})

const remoteMethod = (query: string) => {
  if (query) {
    loading.value = true
    setTimeout(() => {
      loading.value = false
      options.value = list.value.filter((item) => {
        return item.label.toLowerCase().includes(query.toLowerCase())
      })
    }, 3000)
  } else {
    options.value = []
  }
}

const states = [
  'Alabama',
  'Alaska',
  'Arizona',
  'Arkansas',
  'California',
  'Colorado',
  'Connecticut',
  'Delaware',
  'Florida',
  'Georgia',
  'Hawaii',
  'Idaho',
  'Illinois',
  'Indiana',
  'Iowa',
  'Kansas',
  'Kentucky',
  'Louisiana',
  'Maine',
  'Maryland',
  'Massachusetts',
  'Michigan',
  'Minnesota',
  'Mississippi',
  'Missouri',
  'Montana',
  'Nebraska',
  'Nevada',
  'New Hampshire',
  'New Jersey',
  'New Mexico',
  'New York',
  'North Carolina',
  'North Dakota',
  'Ohio',
  'Oklahoma',
  'Oregon',
  'Pennsylvania',
  'Rhode Island',
  'South Carolina',
  'South Dakota',
  'Tennessee',
  'Texas',
  'Utah',
  'Vermont',
  'Virginia',
  'Washington',
  'West Virginia',
  'Wisconsin',
  'Wyoming',
]
</script>

<style>
.el-select-dropdown__loading {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100px;
  font-size: 20px;
}

.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>

<template>
  <el-select
    v-model="value"
    :empty-values="[null, undefined]"
    :value-on-clear="null"
    clearable
    placeholder="Select"
    style="width: 240px"
    @clear="handleClear"
  >
    <el-option
      v-for="item in options"
      :key="item.value"
      :label="item.label"
      :value="item.value"
    />
  </el-select>
</template>

<script lang="ts" setup>
import { ref } from 'vue'
import { ElMessage } from 'element-plus'

const value = ref('')

const options = [
  {
    value: '',
    label: 'All',
  },
  {
    value: 'Option1',
    label: 'Option1',
  },
  {
    value: 'Option2',
    label: 'Option2',
  },
  {
    value: 'Option3',
    label: 'Option3',
  },
  {
    value: 'Option4',
    label: 'Option4',
  },
  {
    value: 'Option5',
    label: 'Option5',
  },
]

const handleClear = () => {
  ElMessage.info(`The clear value is: ${value.value}`)
}
</script>

<template>
  <div class="flex flex-wrap gap-4 items-center">
    <el-select
      v-model="value1"
      placeholder="Select"
      style="width: 240px"
      clearable
    >
      <template #label="{ label, value }">
        <span>{{ label }}: </span>
        <span style="font-weight: bold">{{ value }}</span>
      </template>
      <el-option
        v-for="item in options"
        :key="item.value"
        :label="item.label"
        :value="item.value"
      />
    </el-select>

    <el-select
      v-model="value2"
      placeholder="Select"
      style="width: 240px"
      clearable
      multiple
    >
      <template #label="{ label, value }">
        <span>{{ label }}: </span>
        <span style="font-weight: bold">{{ value }}</span>
      </template>
      <el-option
        v-for="item in options"
        :key="item.value"
        :label="item.label"
        :value="item.value"
      />
    </el-select>
  </div>
</template>

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

const value1 = ref<string>('Option1')
const value2 = ref<string[]>(['Option1'])
const options = [
  {
    value: 'Option1',
    label: 'Label1',
  },
  {
    value: 'Option2',
    label: 'Label2',
  },
  {
    value: 'Option3',
    label: 'Label3',
  },
  {
    value: 'Option4',
    label: 'Label4',
  },
  {
    value: 'Option5',
    label: 'Label5',
  },
]
</script>

<style scoped></style>