<van-grid-item icon="photo-o" text="文字" />怎么使用iconfont

要在VanGridItem中使用iconfont，需要先引入iconfont的CSS文件，并且在VanGridItem中使用对应的iconfont类名。以下是使用步骤：

1. 在HTML文件中引入iconfont的CSS文件

<link rel="stylesheet" href="//at.alicdn.com/t/font_1234567_abcd1234.css">

2. 在VanGridItem中使用iconfont类名

<van-grid-item icon="iconfont-classname" text="文字"></van-grid-item>

注意，`icon`属性中填写的是iconfont的类名，而不是Unicode编码。所以在使用之前需要先找到对应的类名。

相关问题

<template> <div> <van-nav-bar title="商品列表"> <template #left> <van-icon name="arrow-left" size="20px" color="black" @click="returnFn" /> </template> <template #right> <van-icon v-if="show" name="bars" color="black" size="20px" @click="changeFn" /> <van-icon v-else name="apps-o" color="black" size="20px" @click="changeFn" /> </template> </van-nav-bar> <div class="line"> <van-tabbar v-model="active" :fixed="false" active-color="#d81e06"> <van-tabbar-item> <van-dropdown-menu> <van-dropdown-item v-model="value" :options="option1" @change="sortPrice" /> </van-dropdown-menu ></van-tabbar-item> <van-tabbar-item class="big" name="have">有货优先</van-tabbar-item> <van-tabbar-item class="big" name="direct">直营优先</van-tabbar-item> </van-tabbar> </div> <goods-colum v-if="show" :goodsList="goodsList"></goods-colum> <goods-list v-else :goodsList="goodsList"></goods-list> </div> </template>这段代码怎么实现点击有货优先筛选出有货的商品

这段代码中点击有货优先并不会筛选出有货的商品，需要在点击事件中添加筛选逻辑。可以在点击有货优先时，通过修改 `goodsList` 数组，重新渲染商品列表来实现筛选，例如：

1. 在 `data` 中添加 `isHaveGoods` 状态，初始值为 `false`。
2. 在点击有货优先时，将 `isHaveGoods` 状态设为 `true`。
3. 在渲染商品列表时，只渲染有货的商品。

修改后的代码如下：

<template>
  <div>
    <van-nav-bar title="商品列表">
      <template #left>
        <van-icon
          name="arrow-left"
          size="20px"
          color="black"
          @click="returnFn"
        />
      </template>
      <template #right>
        <van-icon
          v-if="show"
          name="bars"
          color="black"
          size="20px"
          @click="changeFn"
        />
        <van-icon
          v-else
          name="apps-o"
          color="black"
          size="20px"
          @click="changeFn"
        />
      </template>
    </van-nav-bar>
    <div class="line">
      <van-tabbar v-model="active" :fixed="false" active-color="#d81e06">
        <van-tabbar-item>
          <van-dropdown-menu>
            <van-dropdown-item
              v-model="value"
              :options="option1"
              @change="sortPrice"
            />
          </van-dropdown-menu>
        </van-tabbar-item>
        <van-tabbar-item
          class="big"
          name="have"
          @click="isHaveGoods = true"
        >
          有货优先
        </van-tabbar-item>
        <van-tabbar-item class="big" name="direct">直营优先</van-tabbar-item>
      </van-tabbar>
    </div>
    <goods-colum v-if="show" :goodsList="filteredGoodsList"></goods-colum>
    <goods-list v-else :goodsList="filteredGoodsList"></goods-list>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 是否有货
      isHaveGoods: false,
      // 商品列表
      goodsList: [],
      // 筛选后的商品列表
      filteredGoodsList: [],
      // ...
    };
  },
  methods: {
    // 点击有货优先时的回调函数
    isHaveGoodsChanged() {
      if (this.isHaveGoods) {
        // 只保留有货的商品
        this.filteredGoodsList = this.goodsList.filter(
          (item) => item.isHaveGoods
        );
      } else {
        this.filteredGoodsList = this.goodsList;
      }
    },
    // ...
  },
};
</script>

<van-cell-group> <van-field model:value="{{ productKey }}" label="productKey:" /> <van-field model:value="{{ deviceName }}" label="deviceName:" /> <van-field model:value="{{ deviceSecret }}" label="deviceSecret:" /> </van-cell-group> <van-divider /> <van-row> <van-col span="5" offset="1"><van-button type="primary" bind:click="turn_on">鞠 躬</van-button></van-col> <van-col span="6"><van-button type="info" bind:click="online">设备上线</vanbutton></van-col> <van-col span="6"><van-button type="danger" bind:click="offline">设备下线</vanbutton></van-col> <van-col span="5" offset="1"><van-button type="warning" bind:click="turn_off">俯 卧撑</van-button></van-col> </van-row>代码错误

这段代码中，第7行和第8行的`van-button`标签的结束标签的斜杠`/`被误删了，导致编译错误。你可以在这两个标签的结尾加上斜杠`/`即可解决问题。修改后的代码如下所示：

<van-cell-group>
  <van-field model:value="{{ productKey }}" label="productKey:" />
  <van-field model:value="{{ deviceName }}" label="deviceName:" />
  <van-field model:value="{{ deviceSecret }}" label="deviceSecret:" />
</van-cell-group>
<van-divider />
<van-row>
  <van-col span="5" offset="1"><van-button type="primary" bind:click="turn_on">鞠 躬</van-button></van-col>
  <van-col span="6"><van-button type="info" bind:click="online">设备上线</van-button></van-col>
  <van-col span="6"><van-button type="danger" bind:click="offline">设备下线</van-button></van-col>
  <van-col span="5" offset="1"><van-button type="warning" bind:click="turn_off">俯 卧撑</van-button></van-col>
</van-row>