关于ionic表单的 If 'ion-list' is an Angular component and it has 'formGroup' input,错误

标题 If ‘ion-list’ is an Angular component and it has ‘formGroup’ input, then verify that it is part of this module. 我们容易犯的错就是在App.moduls.ts引入了FormsModule和ReactiveFormsModule,而忘记给每个需要的组件引入FormsModule和Re

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