小程式報錯Do not have xx handler in current page的解決方法

看到小程式這一大串的“Do not have bindName handler in current page: pages/card/card. Please make sure that bindName handler has been defined in pages/card/card, or pages/card/card has been added into app.json”

 驚不驚喜，意不意外？

我是input輸入姓名時，報的錯誤

解決方法：排查

1、是否使用page()函數註冊頁面

2、添加獲取值的方法

js:

//輸入姓名
  bindName: function (e) {
    let name = e.detail.value;
    this.setData({
      usernameNew: name
    })
  },

xml:

<view class="items-right">
     <input bindinput="bindName" value="{{usernameNew}}" maxlength='7' placeholder-class='all-placeholder' placeholder='輸入真實的姓名' class="right-print" type="text" name="usernameNew" type='text'>     
     </input>
</view>

3、再不濟就在app.json調整文件位置