Whether you need to validate form input or decompose content, regular expressions can do the trick.

无论您是需要验证表单输入，还是需要分解内容，使用正则表达式都非常有用。

youdao

Implement some regular expressions to properly validate form field entries.

实现一些正则表达式来适当地验证表单字段条目。

youdao

You can validate the form fields at both the client side and server side as in any Web application.

在任何web应用程序中，您即可以在客户端也可以在服务器端验证表单字段。

youdao

The problem is that a negotiate-then-validate strategy is just a prettified form of blackmail.

ECONOMIST: Bagehot