@angular/formslink

Implements a set of directives and providers to communicate with native DOM elements when building forms to capture user input.

导出模板驱动表单所需的提供商和指令，使其可用于导入了该模块的 NgModule 中。

Exports the required providers and directives for template-driven forms, making them available for import by NgModules that import this module.

导出响应式表单所需的基础设施和指令，使其能用于任何导入了本模块的 NgModule 中。

Exports the required infrastructure and directives for reactive forms, making them available for import by NgModules that import this module.

这是 FormControl、FormGroup 和 FormArray 的基类。

This is the base class for FormControl, FormGroup, and FormArray.

Base class for control directives.

A base class for code shared between the NgModelGroup and FormGroupName directives.

A base class for directives that contain multiple registered instances of NgControl. Only used by the forms module.

跟踪一个控件数组的值和有效性状态，控件可以是 FormControl、FormGroup 或 FormArray 的实例。

Tracks the value and validity state of an array of FormControl, FormGroup or FormArray instances.

使用用户指定的配置创建 AbstractControl。

Creates an AbstractControl from a user-specified configuration.

跟踪独立表单控件的值和验证状态。

Tracks the value and validation status of an individual form control.

跟踪一组 FormControl 实例的值和有效性状态。

Tracks the value and validity state of a group of FormControl instances.

A base class that all control FormControl-based directives extend. It binds a FormControl object to a DOM element.

提供一组内置验证器，可用于各种表单控件。

Provides a set of built-in validators that can be used by form controls.

提供给 AbstractControl 的配置项接口。

Interface for options provided to an AbstractControl.

An interface implemented by classes that perform asynchronous validation.

A function that receives a control and returns a Promise or observable that emits validation errors if present, otherwise null.

Defines an interface that acts as a bridge between the Angular forms API and a native element in the DOM.

由 FormGroupDirective 和 NgForm 实现的接口。

An interface implemented by FormGroupDirective and NgForm directives.

一个接口，实现了它的类可以扮演验证器的角色。

An interface implemented by classes that perform synchronous validation.

A function that receives a control and synchronously returns a map of validation errors if present, otherwise null.

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.

Syncs a nested FormArray to a DOM element.

• Syncs a standalone FormControl instance to a form control element.

根据名字将现有 FormGroup 中的 FormControl 与一个表单控件进行同步。

Syncs a FormControl in an existing FormGroup to a form control element by name.

Binds an existing FormGroup to a DOM element.

Syncs a nested FormGroup to a DOM element.

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 多重提供商列表。

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.

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 多重提供商列表。

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

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

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.

已废弃: in Angular v6 and will be removed in Angular v9.

This directive is solely used to display warnings when the deprecated ngForm selector is used.

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.

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.

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.

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.

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.

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.

Provide this token to control if form directives buffer IME input until the "compositionend" event occurs.

一个 InjectionToken，用于注册额外的异步验证器，供 AbstractControl 使用。

An InjectionToken for registering additional asynchronous validators used with AbstractControls.

一个 InjectionToken，用于注册额外的同步验证器，供 AbstractControl 使用。

An InjectionToken for registering additional synchronous validators used with AbstractControls.

Used to provide a ControlValueAccessor for form controls.

Defines the map of errors returned from failed validation checks.