为什么 (ngModel) 不起作用? [英] Why (ngModel) is not working?

问题描述

我已经运行示例应用程序来学习 angular 2.在我的示例应用程序中 [(ngModel)] 不起作用.但是当我删除方括号 (ngModel) 屏幕正在加载但双向绑定不起作用.

I have running the sample application to learn angular 2. In my sample application [(ngModel)] is not working. But when i removes the square brackets (ngModel) the screen is loading but two way binding is not working.

我应该做些什么让 [(ngModel)] 工作.

should i do anything for making [(ngModel)] work.

推荐答案

可能你的代码在你的模块中缺少这个导入行:

Probably your code is missing this import line in your module:

import { FormsModule } from '@angular/forms';

您还必须将 FormsModule 添加到模块导入数组中:

You also have to add FormsModule to module imports array:

@NgModule({
   imports:      [FormsModule, /*...*/ ],
   //...
})

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