我正在使用Angular2的ReactiveFormsModule来创建包含表单的组件.这是我的代码：
foo.component.ts：
constructor(fb: FormBuilder) {
this.myForm = fb.group({
'fullname': ['',Validators.required],'gender': []
});
}
foo.component.html(带[formControl])：
<div class="fields">
<div class="field">
<label>Fullname*</label>
<input type="text" [formControl]="myForm.controls.fullname"/>
</div>
</div>
<div class="inline fields">
<label for="gender">Gender</label>
<div class="field">
<div class="ui radio checkBox">
<input type="radio" name="gender" checked="" tabindex="0" class="hidden" [formControl]="myForm.controls.gender">
<label>Male</label>
</div>
</div>
<div class="field">
<div class="ui radio checkBox">
<input type="radio" name="gender" tabindex="0" class="hidden" [formControl]="myForm.controls.gender">
<label>Female</label>
</div>
</div>
</div>
foo.component.html(使用formControlName)：
<div class="fields">
<div class="field">
<label>Fullname*</label>
<input type="text" formControlName="fullname"/>
</div>
</div>
<div class="inline fields">
<label for="gender">Gender</label>
<div class="field">
<div class="ui radio checkBox">
<input type="radio" name="gender" checked="" tabindex="0" class="hidden" formControlName="gender">
<label>Male</label>
</div>
</div>
<div class="field">
<div class="ui radio checkBox">
<input type="radio" name="gender" tabindex="0" class="hidden" formControlName="gender">
<label>Female</label>
</div>
</div>
</div>
两种方式都有效.但我无法弄清楚使用[formControl]和formControlName之间的区别.
我相信你错过了一个重点：第二个例子中的[formGroup]指令. formControlName与[formGroup]一起使用以保存表单多点导航.例如：
<div> <input type="text" [formControl]="myForm.controls.firstName"/> <input type="text" [formControl]="myForm.controls.lastName"/> <input type="text" [formControl]="myForm.controls.email"/> <input type="text" [formControl]="myForm.controls.title"/> </div>
相当于：
<div [formGroup]="myForm"> <input type="text" formControlName="firstName"/> <input type="text" formControlName="lastName"/> <input type="text" formControlName="email"/> <input type="text" formControlName="title"/> </div>
现在想象一下嵌套的FormGroups
