根据以下代码： <el-form-item label="菜品信息"> <!-- <el-input v-model="form.materielCode" autocomplete="off" :disabled="true"></el-input>--> <el-select v-model="form.dishCode" clearable placeholder="请选择菜品信息"> <el-option v-for="item in dishData" :key="item.id" :label="`${item.id}--${item.dishName}-${item.dishPrice}`" :value="item.id"> <!-- :label="`${item.id}&#45;&#45;${item.dishName}&#45;&#45;${item.dishPrice}`"--> </el-option> </el-select> </el-form-item> <el-form-item label="销售数量"> <el-input v-model="form.orderlistAmount" style="width: 210px" autocomplete="off"></el-input> </el-form-item> 销售数量*dishPrice怎么写

可以在代码中添加一个计算属性，来计算销售总金额。具体代码如下：

<template>
  <div>
    <el-form ref="form" :model="form" label-width="120px">
      <el-form-item label="菜品信息">
        <el-select v-model="form.dishCode" clearable placeholder="请选择菜品信息">
          <el-option
            v-for="item in dishData"
            :key="item.id"
            :label="`${item.id}--${item.dishName}-${item.dishPrice}`"
            :value="item.id"
          >
          </el-option>
        </el-select>
      </el-form-item>
      <el-form-item label="销售数量">
        <el-input v-model="form.orderlistAmount" style="width: 210px" autocomplete="off"></el-input>
      </el-form-item>
      <el-form-item label="销售总金额">
        <span>{{ totalAmount }}</span>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
export default {
  data() {
    return {
      form: {
        dishCode: '',
        orderlistAmount: ''
      },
      dishData: [
        { id: 1, dishName: '鱼香肉丝', dishPrice: 20 },
        { id: 2, dishName: '宫保鸡丁', dishPrice: 22 },
        { id: 3, dishName: '回锅肉', dishPrice: 18 }
      ]
    };
  },
  computed: {
    totalAmount() {
      const dish = this.dishData.find((item) => item.id === this.form.dishCode);
      return dish ? dish.dishPrice * this.form.orderlistAmount : '';
    }
  }
};
</script>

在上述代码中，通过计算属性 `totalAmount` 计算销售总金额，具体计算方式为菜品单价乘以销售数量。