ReadMore 展开阅读更多 ​

<template>
  <el-read-more v-model="collapse" height="305px">
    <p
      v-for="item in 8"
      :key="item"
      class="scrollbar-demo-item ep-bg-purple-light"
    >
      {{ item }}
    </p>
  </el-read-more>
</template>

<script setup>
import { ref } from 'vue'
const collapse = ref(true)
</script>

<style scoped>
.scrollbar-demo-item {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 50px;
  margin: 10px;
  text-align: center;
  border-radius: 4px;
  color: #409eff;
}
</style>

<template>
  <el-read-more v-model="collapse" height="300px" overlay>
    <div class="read-more__text">
      {{ text }}
    </div>
  </el-read-more>
</template>

<script setup>
import { ref } from 'vue'

const collapse = ref(true)

const text =
  `加班到深夜走出公司大楼时，路灯把我的影子拉得老长，风一吹，空荡荡的胃就开始“咕咕”抗议。手机屏幕亮起，房东催缴房租的消息刺得人眼睛生疼，而工资卡余额那可怜的数字，像是一记闷棍，把最后一点盼头都敲碎了。想起早上母亲打电话来，小心翼翼问能不能寄点钱回家，我张了张嘴，喉咙却像被棉花堵住，最后只能含糊地说“再等等”。地铁口的小摊飘来烤红薯的香气，我摸了摸口袋，还是转身走向冷风里，心里盘算着下个月该怎么省出那几百块，这生活啊，就像被上了发条的机器，停不下来，也看不到头……`.repeat(
    10
  )
</script>

<style scoped lang="scss">
.read-more__text {
  color: rgb(96, 98, 102);
  line-height: 24px;
}
</style>

<template>
  <el-read-more v-model="collapse" height="305px" :transition="false">
    <p
      v-for="item in list"
      :key="item"
      class="scrollbar-demo-item ep-bg-purple-light"
    >
      {{ item }}
    </p>
  </el-read-more>
</template>

<script setup>
import { ref } from 'vue'
const collapse = ref(false)
const list = ref(0)

setTimeout(() => {
  list.value = 8
}, 1000 * 1)
</script>

<style scoped>
.scrollbar-demo-item {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 50px;
  margin: 10px;
  text-align: center;
  border-radius: 4px;
  color: #409eff;
}
</style>

<template>
  <el-read-more v-model="collapse" height="305px">
    <p
      v-for="item in 3"
      :key="item"
      class="scrollbar-demo-item ep-bg-purple-light"
    >
      {{ item }}
    </p>
  </el-read-more>
</template>

<script setup>
import { ref } from 'vue'
const collapse = ref(true)
</script>

<style scoped>
.scrollbar-demo-item {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 50px;
  margin: 10px;
  text-align: center;
  border-radius: 4px;
  color: #409eff;
}
</style>

<template>
  <el-read-more v-model="collapse" height="305px">
    <p
      v-for="item in 8"
      :key="item"
      class="scrollbar-demo-item ep-bg-purple-light"
    >
      {{ item }}
    </p>
    <template #trigger>
      <div class="trigger" @click="collapse = !collapse">
        <el-link>{{ collapse ? '全部展开' : '收起' }}</el-link>
      </div>
    </template>
  </el-read-more>
</template>

<script setup>
import { ref } from 'vue'
const collapse = ref(true)
</script>

<style scoped>
.scrollbar-demo-item {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 50px;
  margin: 10px;
  text-align: center;
  border-radius: 4px;
  color: #409eff;
}
.trigger {
  display: flex;
  justify-content: center;
}
</style>

<template>
  <el-read-more v-model="collapse" height="100px">
    <el-form
      ref="ruleFormRef"
      inline
      :model="ruleForm"
      :rules="rules"
      label-width="auto"
      class="demo-form-inline"
      :size="formSize"
      status-icon
    >
      <el-form-item label="Activity name" prop="name">
        <el-input v-model="ruleForm.name" />
      </el-form-item>
      <el-form-item label="Activity zone" prop="region">
        <el-select v-model="ruleForm.region" placeholder="Activity zone">
          <el-option label="Zone one" value="shanghai" />
          <el-option label="Zone two" value="beijing" />
        </el-select>
      </el-form-item>
      <el-form-item label="Activity count" prop="count">
        <el-select-v2
          v-model="ruleForm.count"
          placeholder="Activity count"
          :options="options"
        />
      </el-form-item>
      <el-form-item label="Instant delivery" prop="delivery">
        <el-switch v-model="ruleForm.delivery" />
      </el-form-item>
      <el-form-item label="Activity location" prop="location">
        <el-segmented v-model="ruleForm.location" :options="locationOptions" />
      </el-form-item>
      <el-form-item label="Activity type" prop="type">
        <el-checkbox-group v-model="ruleForm.type">
          <el-checkbox value="Online activities" name="type">
            Online activities
          </el-checkbox>
          <el-checkbox value="Promotion activities" name="type">
            Promotion activities
          </el-checkbox>
          <el-checkbox value="Offline activities" name="type">
            Offline activities
          </el-checkbox>
          <el-checkbox value="Simple brand exposure" name="type">
            Simple brand exposure
          </el-checkbox>
        </el-checkbox-group>
      </el-form-item>
      <el-form-item label="Resources" prop="resource">
        <el-radio-group v-model="ruleForm.resource">
          <el-radio value="Sponsorship">Sponsorship</el-radio>
          <el-radio value="Venue">Venue</el-radio>
        </el-radio-group>
      </el-form-item>
    </el-form>
    <template #trigger>
      <div class="trigger">
        <div>
          <el-button type="primary" @click="submitForm(ruleFormRef)">
            查询
          </el-button>
          <el-button @click="resetForm(ruleFormRef)">重置</el-button>
          <el-button link @click="collapse = !collapse">
            {{ collapse ? '全部展开' : '收起' }}
          </el-button>
        </div>
      </div>
    </template>
  </el-read-more>
</template>

<script setup lang="ts">
import { reactive, ref } from 'vue'
import type { ComponentSize, FormInstance, FormRules } from 'element-plus'

interface RuleForm {
  name: string
  region: string
  count: string
  date1: string
  date2: string
  delivery: boolean
  location: string
  type: string[]
  resource: string
  desc: string
}

const formSize = ref<ComponentSize>('default')
const ruleFormRef = ref<FormInstance>()
const ruleForm = reactive<RuleForm>({
  name: 'Hello',
  region: '',
  count: '',
  date1: '',
  date2: '',
  delivery: false,
  location: '',
  type: [],
  resource: '',
  desc: '',
})

const locationOptions = ['Home', 'Company', 'School']

const rules = reactive<FormRules<RuleForm>>({
  name: [
    { required: true, message: 'Please input Activity name', trigger: 'blur' },
    { min: 3, max: 5, message: 'Length should be 3 to 5', trigger: 'blur' },
  ],
  region: [
    {
      required: true,
      message: 'Please select Activity zone',
      trigger: 'change',
    },
  ],
  count: [
    {
      required: true,
      message: 'Please select Activity count',
      trigger: 'change',
    },
  ],
  date1: [
    {
      type: 'date',
      required: true,
      message: 'Please pick a date',
      trigger: 'change',
    },
  ],
  date2: [
    {
      type: 'date',
      required: true,
      message: 'Please pick a time',
      trigger: 'change',
    },
  ],
  location: [
    {
      required: true,
      message: 'Please select a location',
      trigger: 'change',
    },
  ],
  type: [
    {
      type: 'array',
      required: true,
      message: 'Please select at least one activity type',
      trigger: 'change',
    },
  ],
  resource: [
    {
      required: true,
      message: 'Please select activity resource',
      trigger: 'change',
    },
  ],
  desc: [
    { required: true, message: 'Please input activity form', trigger: 'blur' },
  ],
})

const submitForm = async (formEl: FormInstance | undefined) => {
  if (!formEl) return
  await formEl.validate((valid, fields) => {
    if (valid) {
      console.log('submit!')
    } else {
      console.log('error submit!', fields)
    }
  })
}

const resetForm = (formEl: FormInstance | undefined) => {
  if (!formEl) return
  formEl.resetFields()
}

const options = Array.from({ length: 10000 }).map((_, idx) => ({
  value: `${idx + 1}`,
  label: `${idx + 1}`,
}))
const collapse = ref(true)
</script>

<style scoped>
.trigger {
  display: flex;
  /* justify-content: center; */
}
.demo-form-inline .el-input {
  --el-input-width: 220px;
}

.demo-form-inline .el-select {
  --el-select-width: 220px;
}
</style>