MinLengthValidator
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.
参见
Exported from
选择器
[minlength][formControlName][minlength][formControl][minlength][ngModel]
属性
| 属性 | 说明 |
|---|---|
@Input() | 跟踪与此指令绑定的最小长度的更改。 Tracks changes to the minimum length bound to this directive. |
说明
添加最小长度验证器
Adding a minimum length validator
下面的例子演示了如何为带有 ngModel 绑定的输入框添加最小长度验证器。
The following example shows how to add a minimum length validator to an input attached to an ngModel binding.
<input name="firstName" ngModel minlength="4">
