[Angular] Create a custom validator for template driven forms in Angular

最新推荐文章于 2025-09-12 16:56:45 发布

转载最新推荐文章于 2025-09-12 16:56:45 发布 · 108 阅读

文章标签：

#javascript #ViewUI

本文将介绍如何为Angular的模板驱动表单创建自定义验证器。这些验证器不仅有助于提高数据质量，还能引导用户正确填写表单。Angular内置了一些验证器如required和maxLength等，但对于更复杂的场景，则需要开发自定义验证器。

User input validation is a core part of creating proper HTML forms. Form validators not only help you to get better quality data but they also guide the user through your form. Angular comes with a series of built-in validators such as required or maxLength etc. But very soon you have to build your own custom validators to handle more complex scenarios.
In this lesson you're going to learn how to create such custom validators for Angular's template driven forms.