1.组件代码

<el-form-item label='收益日期' prop='payTime'>
  <el-date-picker
    v-model='form.revenueTime'
    value-format='yyyy-MM-dd'
    type='date'
    placeholder='选择日期'>
  </el-date-picker>
</el-form-item>

2.js代码

let yesterday = new Date(new Date().setDate(new Date().getDate() - 1))
    console.log("yest:",yesterday)
    this.form = {
      accountId: '',
      id: '',
      revenue: '',
      revenueTime: yesterday
    }