FormsModulelink

一个 ControlValueAccessor，用于写入值并监听复选框输入元素上的更改。

A ControlValueAccessor for writing a value and listening to changes on a checkbox input element.

该指令会借助 NG_VALIDATORS 绑定把 required 验证器添加到任何带有 required 属性的检查框控件上。

A Directive that adds the required validator to checkbox controls marked with the required attribute. The directive is provided with the NG_VALIDATORS multi-provider list.

The default ControlValueAccessor for writing a value and listening to changes on input elements. The accessor is used by the FormControlDirective, FormControlName, and NgModel directives.

该指令会借助 NG_VALIDATORS 绑定把 email 验证器添加到任何带有 email 属性的控件上。

A directive that adds the email validator to controls marked with the email attribute. The directive is provided with the NG_VALIDATORS multi-provider list.

该指令用于为带有 maxlength 属性的控件添加最大长度验证器。该指令会提供 NG_VALIDATORS 多重提供者列表。

A directive that adds max length validation to controls marked with the maxlength attribute. The directive is provided with the NG_VALIDATORS multi-provider list.

A directive which installs the MaxValidatorfor any formControlName, formControl, or control with ngModel that also has a max attribute.

该指令用于为带有 minlength 属性的控件添加最小长度验证器。该指令会提供 NG_VALIDATORS 多重提供者列表。

A directive that adds minimum length validation to controls marked with the minlength attribute. The directive is provided with the NG_VALIDATORS multi-provider list.

A directive which installs the MinValidatorfor any formControlName, formControl, or control with ngModel that also has a min attribute.

指令自动应用于 Angular 表单控件，该控件会根据控件状态设置 CSS 类。

Directive automatically applied to Angular form controls that sets CSS classes based on control status.

该指令自动应用于 Angular 表单组，基于控件的状态（有效、无效、脏等）设置 CSS 类。

Directive automatically applied to Angular form groups that sets CSS classes based on control status (valid/invalid/dirty/etc).

创建一个顶级的 FormGroup 实例，并把它绑定到一个表单，以跟踪表单的聚合值及其验证状态。

Creates a top-level FormGroup instance and binds it to a form to track aggregate form value and validation status.

根据领域对象创建一个 FormControl 实例，并把它绑定到一个表单控件元素上。

Creates a FormControl instance from a domain model and binds it to a form control element.

创建 FormGroup 的实例并将其绑定到 DOM 元素。

Creates and binds a FormGroup instance to a DOM element.

把选项 <option> 标记为动态的，这样 Angular 就会在选项变化时得到通知。

Marks <option> as dynamic, so Angular can be notified when options change.

用于写入数字值和监听数字输入框更改的 ControlValueAccessor。这个值访问器由 FormControlDirective、FormControlName 和 NgModel 指令使用。

The ControlValueAccessor for writing a number value and listening to number input changes. The value accessor is used by the FormControlDirective, FormControlName, and NgModel directives.

该指令会借助 NG_VALIDATORS 绑定来把 pattern 验证器添加到任何带有 pattern 属性的控件上。 它会使用该属性的值作为正则表达式来验证控件的值。 它会遵循 pattern 属性的语义，也就是说，该正则表达式必须匹配整个控件值。

A directive that adds regex pattern validation to controls marked with the pattern attribute. The regex must match the entire control value. The directive is provided with the NG_VALIDATORS multi-provider list.

ControlValueAccessor 用于写入单选控件的值和监听单选控件值的更改。这个值访问器由 FormControlDirective、FormControlName 和 NgModel 指令使用。

The ControlValueAccessor for writing radio control values and listening to radio control changes. The value accessor is used by the FormControlDirective, FormControlName, and NgModel directives.

此 ControlValueAccessor 用于写入范围输入器的值，并监听范围输入器的变化。它被 FormControlDirective、FormControlName 和 NgModel 使用。

The ControlValueAccessor for writing a range value and listening to range input changes. The value accessor is used by the FormControlDirective, FormControlName, and NgModel directives.

该指令会借助 NG_VALIDATORS 绑定把 required 验证器添加到任何带 required 属性的控件上。

A directive that adds the required validator to any controls marked with the required attribute. The directive is provided with the NG_VALIDATORS multi-provider list.

该 ControlValueAccessor 用于写入 select 控件的值，并监听 select 控件的变化。该值访问器会被 FormControlDirective、FormControlName 和 NgModel 指令使用。

The ControlValueAccessor for writing select control values and listening to select control changes. The value accessor is used by the FormControlDirective, FormControlName, and NgModel directives.

本 ControlValueAccessor 用于写入多选控件值和监听多选控件更改。这个值访问器由 FormControlDirective、FormControlName 和 NgModel 指令使用。

The ControlValueAccessor for writing multi-select control values and listening to multi-select control changes. The value accessor is used by the FormControlDirective, FormControlName, and NgModel directives.