If ngModel is used within a form tag, either the name attribute must be set or the form contro
- 背景：angular中使用form表單時報錯。
報錯資訊：If ngModel is used within a form tag, either the name attribute must be set or the form control must be defined as 'standalone' in ngModelOptions.
- 原因：input使用雙向繫結ngModel時，ng會給這個標籤建立一個FormControl物件，並以input定義的name屬性為標識。沒有name屬性會報錯。
- 解決方案: 1、增加name屬性。
2、不讓ng建立FormControl物件。[ngModelOptions]="{standalone: true}"
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