在使用vant-weapp的时候,输入框van-field绑定的value值不会同步更新到data对应的变量,需要添加@change=“completeInputMobile”

<van-cell-group>
        <van-field class="shoppingName" @change="changeShoppingName" :value="openShoppingMsg.shoppingName" placeholder="花店名称" />
        <van-field class="shoppingDetail" @change="changeShoppingDetail" :value="openShoppingMsg.shoppingDetail" type="textarea" placeholder="给你的花店写一小段宣传语吧~" />
      </van-cell-group>
changeShoppingName (event) {
        this.openShoppingMsg.shoppingName = event.mp.detail
      },
      changeShoppingDetail (event) {
        this.openShoppingMsg.shoppingDetail = event.mp.detail
      },

在标签内添加change事件 这样的话, 在其他地方就可以获取input输入值

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