<gs-title class="both title mt20 mb20" title="专业推荐" fontSize="17px"> <gs-icon-text icon="icon-refresh" fontSize="12px">换一批</gs-icon-text> </gs-title> <view class="both major-class"> <template v-for="major in majors"> <gs-major-recommend class="major-block" :data="major" @clickTitle="clickTitle" @clickItem="clickItem" ></gs-major-recommend> </template> </view>let majors = reactive([ { id: 1, title: '文化服务类', total: 5, list: [ { id: 1, name: '文物修复与保护' }, { id: 2, name: '文化创意与策划' }, { id: 3, name: '公共文化服务与管理' } ] }, { id: 2, title: '经济贸易类', total: 3, list: [ { id: 1, name: '国际经济与贸易' }, { id: 2, name: '国际商务' }, { id: 3, name: '关务与外贸服务' } ] }, { id: 3, title: '经济贸易类', total: 7, list: [ { id: 1, name: '国际经济与贸易' }, { id: 2, name: '国际商务' }, { id: 3, name: '关务与外贸服务' } ] }, { id: 4, title: '经济贸易类', total: 7, list: [ { id: 1, name: '国际经济与贸易' }, { id: 2, name: '国际商务' }, { id: 3, name: '关务与外贸服务' } ] } ])点击这个换一批就会更换一批majors

根据提供的代码，点击“换一批”按钮应该是触发某个函数来更改majors数组的值。在Vue.js中，使用响应式数据（reactive）来更改数据，会自动触发视图的重新渲染，从而实现页面的更新。因此，需要在Vue.js组件实例中定义一个函数，实现更改majors数组的逻辑，例如：

methods: {
  changeMajors() {
    // 实现更换majors数组的逻辑
    // ...
  }
}

然后，在模板中添加点击事件绑定来触发这个函数，例如：

<gs-icon-text icon="icon-refresh" fontSize="12px" @click="changeMajors">换一批</gs-icon-text>

这样，每次点击“换一批”按钮就会触发changeMajors函数，从而更改majors数组的值，并自动触发视图的重新渲染。

相关问题

<!-- 点击筛选从底部弹出 --> <tui-drawer :mode="'bottom'" :visible="bottomDrawer" @close="closeDrawer"> <view class="d-container both"> <view class="drawer-title"> <view></view> <view style="font-weight: bold;">全部筛选</view> <gs-icon-text class="icon" icon="icon-chacha1" color="#535d73" fontSize="1.5em" @click="closeDrawer"></gs-icon-text> </view> <view> <gs-title title="办学性质" fontSize="30rpx"></gs-title> <view class="flex mb20 mt20" style="justify-content: space-between;"> <view class="education">公办</view> <view class="education">民办</view> </view> <gs-title class="mb20" title="等级" fontSize="30rpx"></gs-title> <view class="level" v-for="(item, index) in level" :key="index">{{ item }}</view> <gs-title class="mb35 mt35" title="类别" fontSize="30rpx"></gs-title> <view class="category" v-for="(item, index) in category" :key="index">{{ item }}</view> <view class="designatedMajors flex"> <gs-title class="mb35 mt35" title="单招专业" fontSize="30rpx"></gs-title> <gs-icon-text v-show="appoint != '指定专业'" icon="icon-right" fontSize="12px" color="#b6baca" iconPos="right" @click="designatedMajors">切换专业</gs-icon-text> </view> <view class="appoint" :class="{active:appoint != '指定专业'}" @click="designatedMajors">{{ appoint }}</view> <gs-title class="mb35 mt35" title="双高院校" fontSize="30rpx"></gs-title> <view style="margin-bottom: 150rpx;"> <view class="doubleheight" v-for="(item, index) in doubleheight" :key="index">{{ item.name }} <view>{{ item.level }}</view> </view> </view> </view> </view> <view class="tabbar"> <view class="resetting">重置</view> <view class="complete" @click="closeDrawer">完成</view> </view> </tui-drawer>onLoad((option) => { if (option.name) { bottomDrawer.value = true uni.pageScrollTo({ scrollTop:800 }) appoint.value = option.name } })如何在option.name为true的情况下让筛选滚动至单招专业上去

你可以在 `onLoad` 函数中添加一个条件判断，当 `option.name` 为 true 时，使用 `uni.nextTick` 函数在下一次 DOM 更新之后，调用 `uni.pageScrollTo` 函数将页面滚动至指定位置。具体代码如下：

onLoad((option) => {
  if (option.name) {
    bottomDrawer.value = true
    if (appoint.value !== option.name) {
      appoint.value = option.name
      uni.nextTick(() => {
        uni.pageScrollTo({
          scrollTop: 800
        })
      })
    }
  }
})

在上述代码中，使用 `if (appoint.value !== option.name)` 条件判断是为了避免重复调用 `uni.pageScrollTo` 函数，提高性能。

<main-content :ifDetail="true"> <div class="two-side"> <div class="main-left"> <el-form :model="form" :rules="rules" ref="form" label-width="120px"> <el-form-item label="选择下载模块" prop="accountName"> <el-input v-model.trim="form.accountName" :maxlength="50"></el-input> </el-form-item> <el-form-item label="倾斜度"> <el-slider v-model.number="form.rotate" :min="-180" :max="180"></el-slider> </el-form-item> <el-form-item label="文字"> <el-input type="textarea" v-model="form.text"></el-input> </el-form-item> <el-form-item label="文字大小"> <el-input-number v-model.number="form.fontSize" :min="10" :max="50"></el-input-number> px </el-form-item> <el-form-item label="位置"> <el-select placeholder="请选择位置" v-model="form.alignment"> <el-option v-for="item in options" :key="item.value" :label="item.label" :value="item.value"></el-option> </el-select> </el-form-item> <el-form-item> <el-select v-if="form.alignment === 2" placeholder="请选择位置" v-model="form.textPosition"> <el-option v-for="item in textPositionOptions" :key="item.value" :label="item.label" :value="item.value" ></el-option> </el-select> </el-form-item> </el-form> {{ watermarkStyle }} </div> <div class="main-right" id="show"> <div class="watermark"> <span :style="watermarkStyle" ref="showText" style="word-break:break-all;display: inline-block">{{ form.text }}</span> </div> </div> </div> </main-content> 左边来控制右边div里水印展示，代码怎么写

您可以在 `<el-form>` 标签上绑定 `@input` 事件，当表单数据发生改变时，触发该事件，然后在事件处理函数中计算出水印的样式，并将样式绑定到 `<span>` 标签上。具体实现代码如下：

<template>
  <main-content :ifDetail="true">
    <div class="two-side">
      <div class="main-left">
        <el-form :model="form" :rules="rules" ref="form" label-width="120px" @input="handleInput">
          <!-- 表单项省略 -->
        </el-form>
      </div>
      <div class="main-right" id="show">
        <div class="watermark">
          <span :style="watermarkStyle" ref="showText" style="word-break:break-all;display: inline-block">{{ form.text }}</span>
        </div>
      </div>
    </div>
  </main-content>
</template>

<script>
export default {
  data() {
    return {
      form: {
        accountName: '',
        rotate: 0,
        text: '',
        fontSize: 16,
        alignment: 1,
        textPosition: 1
      },
      options: [
        { label: '左上', value: 1 },
        { label: '居中', value: 2 },
        { label: '右下', value: 3 }
      ],
      textPositionOptions: [
        { label: '正常', value: 1 },
        { label: '斜体', value: 2 }
      ]
    }
  },
  computed: {
    watermarkStyle() {
      const { rotate, fontSize, alignment, textPosition } = this.form
      const deg = rotate + (textPosition === 2 ? -45 : 0)
      const translateX =
        alignment === 1 ? '-10%' : alignment === 2 ? '-50%' : '90%'
      const translateY =
        alignment === 1 ? '-10%' : alignment === 2 ? '-50%' : '90%'
      const transform = `rotate(${deg}deg)`
      const style = {
        position: 'absolute',
        top: 0,
        left: 0,
        bottom: 0,
        right: 0,
        fontSize: `${fontSize}px`,
        transform: transform,
        '-webkit-transform': transform,
        '-ms-transform': transform,
        '-moz-transform': transform,
        '-o-transform': transform,
        opacity: '0.2',
        'pointer-events': 'none',
        'text-align': 'center',
        'z-index': 9999,
        transformOrigin: '50% 50%',
        '-webkit-transform-origin': '50% 50%',
        '-ms-transform-origin': '50% 50%',
        '-moz-transform-origin': '50% 50%',
        '-o-transform-origin': '50% 50%',
        color: '#000',
        'word-break': 'break-all',
        'white-space': 'pre-wrap',
        'max-height': '100%',
        'max-width': '100%',
        overflow: 'hidden',
        'text-overflow': 'ellipsis',
        '-webkit-text-fill-color': 'transparent',
        '-webkit-background-clip': 'text',
        'background-clip': 'text',
        '-webkit-user-select': 'none',
        '-moz-user-select': 'none',
        '-ms-user-select': 'none',
        userSelect: 'none',
        '-webkit-line-clamp': '1',
        display: 'flex',
        'align-items': 'center',
        'justify-content': 'center',
        'transform-style': 'preserve-3d'
      }
      if (textPosition === 2) {
        style.padding = '0.5rem'
        style.background =
          'linear-gradient(to right bottom, rgba(255, 255, 255, 0.2) 0%, rgba(255, 255, 255, 0.2) 45%, rgba(255, 255, 255, 0) 50%, rgba(255, 255, 255, 0.2) 55%, rgba(255, 255, 255, 0.2) 100%)'
      }
      style.transform += ` translate(${translateX}, ${translateY})`
      style['-webkit-transform'] += ` translate(${translateX}, ${translateY})`
      style['-moz-transform'] += ` translate(${translateX}, ${translateY})`
      style['-ms-transform'] += ` translate(${translateX}, ${translateY})`
      style['-o-transform'] += ` translate(${translateX}, ${translateY})`
      return style
    }
  },
  methods: {
    handleInput() {
      this.$nextTick(() => {
        const { width, height } = this.$refs.show.getBoundingClientRect()
        const { offsetWidth, offsetHeight } = this.$refs.showText
        if (width === 0 || height === 0 || offsetWidth === 0 || offsetHeight === 0) {
          return
        }
        const scaleX = width / offsetWidth
        const scaleY = height / offsetHeight
        const scale = Math.min(scaleX, scaleY)
        this.$refs.showText.style.transform += `scale(${scale})`
        this.$refs.showText.style['-webkit-transform'] += `scale(${scale})`
        this.$refs.showText.style['-moz-transform'] += `scale(${scale})`
        this.$refs.showText.style['-ms-transform'] += `scale(${scale})`
        this.$refs.showText.style['-o-transform'] += `scale(${scale})`
      })
    }
  }
}
</script>

代码中的 `watermarkStyle` 计算属性用于计算水印的样式，`handleInput` 方法用于在计算出水印样式后，将水印按照比例缩小并居中显示。注意，为了保证水印样式的正确性，需要在表单项加载完成之后计算水印样式，因此需要在 `handleInput` 方法中使用 `$nextTick` 方法等待表单项加载完成再进行计算。